mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-02 15:18:19 +00:00
2495 commits
Author | SHA1 | Message | Date | |
---|---|---|---|---|
Linus Torvalds
|
cb3f09f9af |
hyperv-next for 5.17
-----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEIbPD0id6easf0xsudhRwX5BBoF4FAmHhw7oTHHdlaS5saXVA a2VybmVsLm9yZwAKCRB2FHBfkEGgXrjSB/979LV4Dn1PMcFYsSdlFEMeHcjzJdw/ kFnLPXMaPJyfg6QPuf83jxzw9uxw8fcePMdVq/FFBtmVV9fJMAv62B8jaGS1p58c WnAg+7zsTN+xEoJn+tskSSon8BNMWVrl41zP3K4Ged+5j8UEBk62GB8Orz1qkpwL fTh3/+xAvczJeD4zZb1dAm4WnmcQJ4vhg45p07jX6owvnwQAikMFl45aSW54I5o8 vAxGzFgdsZ2NtExnRNKh3b3DozA8JUE89KckBSZnDtq4rH8Fyy6Wij56Hc6v6Cml SUohiNbHX7hsNwit/lxL8wuF97IiA0pQSABobEg3rxfTghTUep51LlaN =/m4A -----END PGP SIGNATURE----- Merge tag 'hyperv-next-signed-20220114' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv updates from Wei Liu: - More patches for Hyper-V isolation VM support (Tianyu Lan) - Bug fixes and clean-up patches from various people * tag 'hyperv-next-signed-20220114' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: scsi: storvsc: Fix storvsc_queuecommand() memory leak x86/hyperv: Properly deal with empty cpumasks in hyperv_flush_tlb_multi() Drivers: hv: vmbus: Initialize request offers message for Isolation VM scsi: storvsc: Fix unsigned comparison to zero swiotlb: Add CONFIG_HAS_IOMEM check around swiotlb_mem_remap() x86/hyperv: Fix definition of hv_ghcb_pg variable Drivers: hv: Fix definition of hypercall input & output arg variables net: netvsc: Add Isolation VM support for netvsc driver scsi: storvsc: Add Isolation VM support for storvsc driver hyper-v: Enable swiotlb bounce buffer for Isolation VM x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has() swiotlb: Add swiotlb bounce buffer remap function for HV IVM |
||
Linus Torvalds
|
d0a231f01e |
pci-v5.17-changes
-----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEEgMe7l+5h9hnxdsnuWYigwDrT+vwFAmHgpugUHGJoZWxnYWFz QGdvb2dsZS5jb20ACgkQWYigwDrT+vz59g//eWRLb0j2Vgv84ZH4x1iv6MaBboQr 2wScnfoN+MIoh+tuM4kRak15X4nB8rJhNZZCzesMUN6PeZvrkoPo4sz/xdzIrA/N qY3h8NZ3nC4yCvs/tGem0zZUcSCJsxUAD0eegyMSa142xGIOQTHBSJRflR9osKSo bnQlKTkugV8t4kD7NlQ5M3HzN3R+mjsII5JNzCqv2XlzAZG3D8DhPyIpZnRNAOmW KiHOVXvQOocfUlvSs5kBlhgR1HgJkGnruCrJ1iDCWQH1Zk0iuVgoZWgVda6Cs3Xv gcTJLB7VoSdNZKnct9aMNYPKziHkYc7clilPeDsJs5TlSv3kKERzLj6c/5ZAxFWN +RsH+zYHDXJSsL/w0twPnaF5WCuVYUyrs3UiSjUvShKl1T9k9J+Jo8zwUUZx8Xb0 qXX8jRGMHolBGwPXm2fHEb4bwTUI8emPj29qK4L96KsQ3zKXWB8eGSosxUP52Tti RR2WZjkvwlREZCJp6jSEJYkhzoEaVAm8CjKpKUuneX9WcUOsMBSs9k7EXbUy7JeM hq5Keuqa8PZo/IK2DYYAchNnBJUDMsWJeduBW12qSmx3J+9victP2qOFu+9skP0a 85xlO6Cx8beiQh+XnY7jyROvIFuxTnGKHgkq/89Ham/whEzdJ+GRIiYB218kLLCW ILdas3C2iiGz99I= =Vgg4 -----END PGP SIGNATURE----- Merge tag 'pci-v5.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull pci updates from Bjorn Helgaas: "Enumeration: - Use pci_find_vsec_capability() instead of open-coding it (Andy Shevchenko) - Convert pci_dev_present() stub from macro to static inline to avoid 'unused variable' errors (Hans de Goede) - Convert sysfs slot attributes from default_attrs to default_groups (Greg Kroah-Hartman) - Use DWORD accesses for LTR, L1 SS to avoid BayHub OZ711LV2 erratum (Rajat Jain) - Remove unnecessary initialization of static variables (Longji Guo) Resource management: - Always write Intel I210 ROM BAR on update to work around device defect (Bjorn Helgaas) PCIe native device hotplug: - Fix pciehp lockdep errors on Thunderbolt undock (Hans de Goede) - Fix infinite loop in pciehp IRQ handler on power fault (Lukas Wunner) Power management: - Convert amd64-agp, sis-agp, via-agp from legacy PCI power management to generic power management (Vaibhav Gupta) IOMMU: - Add function 1 DMA alias quirk for Marvell 88SE9125 SATA controller so it can work with an IOMMU (Yifeng Li) Error handling: - Add PCI_ERROR_RESPONSE and related definitions for signaling and checking for transaction errors on PCI (Naveen Naidu) - Fabricate PCI_ERROR_RESPONSE data (~0) in config read wrappers, instead of in host controller drivers, when transactions fail on PCI (Naveen Naidu) - Use PCI_POSSIBLE_ERROR() to check for possible failure of config reads (Naveen Naidu) Peer-to-peer DMA: - Add Logan Gunthorpe as P2PDMA maintainer (Bjorn Helgaas) ASPM: - Calculate link L0s and L1 exit latencies when needed instead of caching them (Saheed O. Bolarinwa) - Calculate device L0s and L1 acceptable exit latencies when needed instead of caching them (Saheed O. Bolarinwa) - Remove struct aspm_latency since it's no longer needed (Saheed O. Bolarinwa) APM X-Gene PCIe controller driver: - Fix IB window setup, which was broken by the fact that IB resources are now sorted in address order instead of DT dma-ranges order (Rob Herring) Apple PCIe controller driver: - Enable clock gating to save power (Hector Martin) - Fix REFCLK1 enable/poll logic (Hector Martin) Broadcom STB PCIe controller driver: - Declare bitmap correctly for use by bitmap interfaces (Christophe JAILLET) - Clean up computation of legacy and non-legacy MSI bitmasks (Florian Fainelli) - Update suspend/resume/remove error handling to warn about errors and not fail the operation (Jim Quinlan) - Correct the "pcie" and "msi" interrupt descriptions in DT binding (Jim Quinlan) - Add DT bindings for endpoint voltage regulators (Jim Quinlan) - Split brcm_pcie_setup() into two functions (Jim Quinlan) - Add mechanism for turning on voltage regulators for connected devices (Jim Quinlan) - Turn voltage regulators for connected devices on/off when bus is added or removed (Jim Quinlan) - When suspending, don't turn off voltage regulators for wakeup devices (Jim Quinlan) Freescale i.MX6 PCIe controller driver: - Add i.MX8MM support (Richard Zhu) Freescale Layerscape PCIe controller driver: - Use DWC common ops instead of layerscape-specific link-up functions (Hou Zhiqiang) Intel VMD host bridge driver: - Honor platform ACPI _OSC feature negotiation for Root Ports below VMD (Kai-Heng Feng) - Add support for Raptor Lake SKUs (Karthik L Gopalakrishnan) - Reset everything below VMD before enumerating to work around failure to enumerate NVMe devices when guest OS reboots (Nirmal Patel) Bridge emulation (used by Marvell Aardvark and MVEBU): - Make emulated ROM BAR read-only by default (Pali Rohár) - Make some emulated legacy PCI bits read-only for PCIe devices (Pali Rohár) - Update reserved bits in emulated PCIe Capability (Pali Rohár) - Allow drivers to emulate different PCIe Capability versions (Pali Rohár) - Set emulated Capabilities List bit for all PCIe devices, since they must have at least a PCIe Capability (Pali Rohár) Marvell Aardvark PCIe controller driver: - Add bridge emulation definitions for PCIe DEVCAP2, DEVCTL2, DEVSTA2, LNKCAP2, LNKCTL2, LNKSTA2, SLTCAP2, SLTCTL2, SLTSTA2 (Pali Rohár) - Add aardvark support for DEVCAP2, DEVCTL2, LNKCAP2 and LNKCTL2 registers (Pali Rohár) - Clear all MSIs at setup to avoid spurious interrupts (Pali Rohár) - Disable bus mastering when unbinding host controller driver (Pali Rohár) - Mask all interrupts when unbinding host controller driver (Pali Rohár) - Fix memory leak in host controller unbind (Pali Rohár) - Assert PERST# when unbinding host controller driver (Pali Rohár) - Disable link training when unbinding host controller driver (Pali Rohár) - Disable common PHY when unbinding host controller driver (Pali Rohár) - Fix resource type checking to check only IORESOURCE_MEM, not IORESOURCE_MEM_64, which is a flavor of IORESOURCE_MEM (Pali Rohár) Marvell MVEBU PCIe controller driver: - Implement pci_remap_iospace() for ARM so mvebu can use devm_pci_remap_iospace() instead of the previous ARM-specific pci_ioremap_io() interface (Pali Rohár) - Use the standard pci_host_probe() instead of the device-specific mvebu_pci_host_probe() (Pali Rohár) - Replace all uses of ARM-specific pci_ioremap_io() with the ARM implementation of the standard pci_remap_iospace() interface and remove pci_ioremap_io() (Pali Rohár) - Skip initializing invalid Root Ports (Pali Rohár) - Check for errors from pci_bridge_emul_init() (Pali Rohár) - Ignore any bridges at non-zero function numbers (Pali Rohár) - Return ~0 data for invalid config read size (Pali Rohár) - Disallow mapping interrupts on emulated bridges (Pali Rohár) - Clear Root Port Memory & I/O Space Enable and Bus Master Enable at initialization (Pali Rohár) - Make type bits in Root Port I/O Base register read-only (Pali Rohár) - Disable Root Port windows when base/limit set to invalid values (Pali Rohár) - Set controller to Root Complex mode (Pali Rohár) - Set Root Port Class Code to PCI Bridge (Pali Rohár) - Update emulated Root Port secondary bus numbers to better reflect the actual topology (Pali Rohár) - Add PCI_BRIDGE_CTL_BUS_RESET support to emulated Root Ports so pci_reset_secondary_bus() can reset connected devices (Pali Rohár) - Add PCI_EXP_DEVCTL Error Reporting Enable support to emulated Root Ports (Pali Rohár) - Add PCI_EXP_RTSTA PME Status bit support to emulated Root Ports (Pali Rohár) - Add DEVCAP2, DEVCTL2 and LNKCTL2 support to emulated Root Ports on Armada XP and newer devices (Pali Rohár) - Export mvebu-mbus.c symbols to allow pci-mvebu.c to be a module (Pali Rohár) - Add support for compiling as a module (Pali Rohár) MediaTek PCIe controller driver: - Assert PERST# for 100ms to allow power and clock to stabilize (qizhong cheng) MediaTek PCIe Gen3 controller driver: - Disable Mediatek DVFSRC voltage request since lack of DVFSRC to respond to the request causes failure to exit L1 PM Substate (Jianjun Wang) MediaTek MT7621 PCIe controller driver: - Declare mt7621_pci_ops static (Sergio Paracuellos) - Give pcibios_root_bridge_prepare() access to host bridge windows (Sergio Paracuellos) - Move MIPS I/O coherency unit setup from driver to pcibios_root_bridge_prepare() (Sergio Paracuellos) - Add missing MODULE_LICENSE() (Sergio Paracuellos) - Allow COMPILE_TEST for all arches (Sergio Paracuellos) Microsoft Hyper-V host bridge driver: - Add hv-internal interfaces to encapsulate arch IRQ dependencies (Sunil Muthuswamy) - Add arm64 Hyper-V vPCI support (Sunil Muthuswamy) Qualcomm PCIe controller driver: - Undo PM setup in qcom_pcie_probe() error handling path (Christophe JAILLET) - Use __be16 type to store return value from cpu_to_be16() (Manivannan Sadhasivam) - Constify static dw_pcie_ep_ops (Rikard Falkeborn) Renesas R-Car PCIe controller driver: - Fix aarch32 abort handler so it doesn't check the wrong bus clock before accessing the host controller (Marek Vasut) TI Keystone PCIe controller driver: - Add register offset for ti,syscon-pcie-id and ti,syscon-pcie-mode DT properties (Kishon Vijay Abraham I) MicroSemi Switchtec management driver: - Add Gen4 automotive device IDs (Kelvin Cao) - Declare state_names[] as static so it's not allocated and initialized for every call (Kelvin Cao) Host controller driver cleanups: - Use of_device_get_match_data(), not of_match_device(), when we only need the device data in altera, artpec6, cadence, designware-plat, dra7xx, keystone, kirin (Fan Fei) - Drop pointless of_device_get_match_data() cast in j721e (Bjorn Helgaas) - Drop redundant struct device * from j721e since struct cdns_pcie already has one (Bjorn Helgaas) - Rename driver structs to *_pcie in intel-gw, iproc, ls-gen4, mediatek-gen3, microchip, mt7621, rcar-gen2, tegra194, uniphier, xgene, xilinx, xilinx-cpm for consistency across drivers (Fan Fei) - Fix invalid address space conversions in hisi, spear13xx (Bjorn Helgaas) Miscellaneous: - Sort Intel Device IDs by value (Andy Shevchenko) - Change Capability offsets to hex to match spec (Baruch Siach) - Correct misspellings (Krzysztof Wilczyński) - Terminate statement with semicolon in pci_endpoint_test.c (Ming Wang)" * tag 'pci-v5.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (151 commits) PCI: mt7621: Allow COMPILE_TEST for all arches PCI: mt7621: Add missing MODULE_LICENSE() PCI: mt7621: Move MIPS setup to pcibios_root_bridge_prepare() PCI: Let pcibios_root_bridge_prepare() access bridge->windows PCI: mt7621: Declare mt7621_pci_ops static PCI: brcmstb: Do not turn off WOL regulators on suspend PCI: brcmstb: Add control of subdevice voltage regulators PCI: brcmstb: Add mechanism to turn on subdev regulators PCI: brcmstb: Split brcm_pcie_setup() into two funcs dt-bindings: PCI: Add bindings for Brcmstb EP voltage regulators dt-bindings: PCI: Correct brcmstb interrupts, interrupt-map. PCI: brcmstb: Fix function return value handling PCI: brcmstb: Do not use __GENMASK PCI: brcmstb: Declare 'used' as bitmap, not unsigned long PCI: hv: Add arm64 Hyper-V vPCI support PCI: hv: Make the code arch neutral by adding arch specific interfaces PCI: pciehp: Use down_read/write_nested(reset_lock) to fix lockdep errors x86/PCI: Remove initialization of static variables to false PCI: Use DWORD accesses for LTR, L1 SS to avoid erratum misc: pci_endpoint_test: Terminate statement with semicolon ... |
||
Yury Norov
|
47d8c15615 |
include: move find.h from asm_generic to linux
find_bit API and bitmap API are closely related, but inclusion paths are different - include/asm-generic and include/linux, correspondingly. In the past it made a lot of troubles due to circular dependencies and/or undefined symbols. Fix this by moving find.h under include/linux. Signed-off-by: Yury Norov <yury.norov@gmail.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> |
||
Yury Norov
|
6b8ecb84f8 |
bitops: move find_bit_*_le functions from le.h to find.h
It's convenient to have all find_bit declarations in one place. Signed-off-by: Yury Norov <yury.norov@gmail.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> |
||
Yury Norov
|
b7ec62d7ee |
bitops: protect find_first_{,zero}_bit properly
find_first_bit() and find_first_zero_bit() are not protected with
ifdefs as other functions in find.h. It causes build errors on some
platforms if CONFIG_GENERIC_FIND_FIRST_BIT is enabled.
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Fixes:
|
||
Sunil Muthuswamy
|
831c1ae725 |
PCI: hv: Make the code arch neutral by adding arch specific interfaces
Encapsulate arch dependencies in Hyper-V vPCI through a set of arch-dependent interfaces. Adding these arch specific interfaces will allow for an implementation for other architectures, such as arm64. There are no functional changes expected from this patch. Link: https://lore.kernel.org/r/1641411156-31705-2-git-send-email-sunilmut@linux.microsoft.com Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Reviewed-by: Marc Zyngier <maz@kernel.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> |
||
Linus Torvalds
|
daadb3bd0e |
Peter Zijlstra says:
"Lots of cleanups and preparation; highlights: - futex: Cleanup and remove runtime futex_cmpxchg detection - rtmutex: Some fixes for the PREEMPT_RT locking infrastructure - kcsan: Share owner_on_cpu() between mutex,rtmutex and rwsem and annotate the racy owner->on_cpu access *once*. - atomic64: Dead-Code-Elemination" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmHdvssACgkQEsHwGGHe VUrbBg//VQvz5BwddIJDj9utt5AvSixNcTF5mJyFKCSIqO0S4J8nCNcvJjZ2bs4S w1YmInFbp0WFGUhaIZiw0e6KWJUoINTng4MfHDZosS1doT2of53ZaQqXs3i81jDz 87w8ADVHL0x4+BNjdsIwbcuPSDTmJFoyFOdeXTIl9hv9ZULT8m4Mt+LJuUHNZ+vF rS1jyseVPWkcm5y+Yie0rhip+ygzbfbt0ArsLfRcrBJsKr6oxLxV2DDF+2djXuuP d2OgGT7VkbgAhoKpzVXUiHsT6ppR5Mn5TLSa4EZ4bPPCUFldOhKuCAImF3T6yVIa 44iX5vQN9v5VHBy6ocPbdOIBuYBYVGCMurh1t7pbpB6G+mmSxMiyta5MY37POwjv K2JT9mC2A6a4d17gue5FT3mnJMBB4eHwVaDfAwCZs/5rRNuoTz4aY5Xy04Mq0ltI 39uarwBd5hwSugBWg44AS5E9h52E654FQ7g6iS4NtUvJuuaXBTl43EcZWx2+mnPL zY+iOMVMgg33VIVcm/mlf/6zWL0LXPmILUiA1fp4Q9/n8u1EuOOyeA/GsC9Pl3wO HY3KpYJA5eQpIk/JEnzKm5ZE3pCrUdH6VDC/SB4owQtafQG6OxyQVP1Gj7KYxZsD NqqpJ4nkKooc5f5DqVEN8wrjyYsnVxEfriEG09OoR6wI3MqyUA4= =vrYy -----END PGP SIGNATURE----- Merge tag 'locking_core_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking updates from Borislav Petkov: "Lots of cleanups and preparation. Highlights: - futex: Cleanup and remove runtime futex_cmpxchg detection - rtmutex: Some fixes for the PREEMPT_RT locking infrastructure - kcsan: Share owner_on_cpu() between mutex,rtmutex and rwsem and annotate the racy owner->on_cpu access *once*. - atomic64: Dead-Code-Elemination" [ Description above by Peter Zijlstra ] * tag 'locking_core_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/atomic: atomic64: Remove unusable atomic ops futex: Fix additional regressions locking: Allow to include asm/spinlock_types.h from linux/spinlock_types_raw.h x86/mm: Include spinlock_t definition in pgtable. locking: Mark racy reads of owner->on_cpu locking: Make owner_on_cpu() into <linux/sched.h> lockdep/selftests: Adapt ww-tests for PREEMPT_RT lockdep/selftests: Skip the softirq related tests on PREEMPT_RT lockdep/selftests: Unbalanced migrate_disable() & rcu_read_lock(). lockdep/selftests: Avoid using local_lock_{acquire|release}(). lockdep: Remove softirq accounting on PREEMPT_RT. locking/rtmutex: Add rt_mutex_lock_nest_lock() and rt_mutex_lock_killable(). locking/rtmutex: Squash self-deadlock check for ww_rt_mutex. locking: Remove rt_rwlock_is_contended(). sched: Trigger warning if ->migration_disabled counter underflows. futex: Fix sparc32/m68k/nds32 build regression futex: Remove futex_cmpxchg detection futex: Ensure futex_atomic_cmpxchg_inatomic() is present kernel/locking: Use a pointer in ww_mutex_trylock(). |
||
Linus Torvalds
|
c1eb8f6cff |
parisc architecture updates for kernel v5.17-rc1
- Fix lpa and lpa_user defines (John David Anglin) - Fix symbol lookup of init functions with an __is_kernel() fix (Helge Deller) - Fix wrong pdc_toc_pim_11 and pdc_toc_pim_20 definitions (Helge Deller) - Add lws_atomic_xchg and lws_atomic_store syscalls (John David Anglin) - Rewrite light-weight syscall and futex code (John David Anglin) - Enable TOC (transfer of contents) feature unconditionally (Helge Deller) - Improve fault handler messages (John David Anglin) - Improve build process (Masahiro Yamada) - Reduce kernel code footprint of user access functions (Helge Deller) - Fix build error due to outX() macros (Bart Van Assche) - Ue default_groups in kobj_type in pdc_stable (Greg Kroah-Hartman) - Default to 16 CPUs on 32-bit kernel (Helge Deller) -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQS86RI+GtKfB8BJu973ErUQojoPXwUCYd1tRgAKCRD3ErUQojoP X+k/AQDqGWQ+EQE15O+t9ZtluQVVRN30qeu3viSfutsj3DitOAEAvdzINTBakJ5N Rm1Y6b3AZ3oCrjjRR0b2TuWvt+Uxew0= =R+Ha -----END PGP SIGNATURE----- Merge tag 'for-5.17/parisc-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc architecture updates from Helge Deller: - Fix lpa and lpa_user defines (John David Anglin) - Fix symbol lookup of init functions with an __is_kernel() fix (Helge Deller) - Fix wrong pdc_toc_pim_11 and pdc_toc_pim_20 definitions (Helge Deller) - Add lws_atomic_xchg and lws_atomic_store syscalls (John David Anglin) - Rewrite light-weight syscall and futex code (John David Anglin) - Enable TOC (transfer of contents) feature unconditionally (Helge Deller) - Improve fault handler messages (John David Anglin) - Improve build process (Masahiro Yamada) - Reduce kernel code footprint of user access functions (Helge Deller) - Fix build error due to outX() macros (Bart Van Assche) - Ue default_groups in kobj_type in pdc_stable (Greg Kroah-Hartman) - Default to 16 CPUs on 32-bit kernel (Helge Deller) * tag 'for-5.17/parisc-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Default to 16 CPUs on 32-bit kernel sections: Fix __is_kernel() to include init ranges parisc: Re-use toc_stack as hpmc_stack parisc: Enable TOC (transfer of contents) feature unconditionally parisc: io: Improve the outb(), outw() and outl() macros parisc: pdc_stable: use default_groups in kobj_type parisc: Add kgdb io_module to read chars via PDC parisc: Fix pdc_toc_pim_11 and pdc_toc_pim_20 definitions parisc: Add lws_atomic_xchg and lws_atomic_store syscalls parisc: Rewrite light-weight syscall and futex code parisc: Enhance page fault termination message parisc: Don't call faulthandler_disabled() in do_page_fault() parisc: Switch user access functions to signal errors in r29 instead of r8 parisc: Avoid calling faulthandler_disabled() twice parisc: Fix lpa and lpa_user defines parisc: Define depi_safe macro parisc: decompressor: do not copy source files while building |
||
Linus Torvalds
|
f692121142 |
This pull request contains the following changes for UML:
- set_fs removal - Devicetree support - Many cleanups from Al - Various virtio and build related fixes -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEdgfidid8lnn52cLTZvlZhesYu8EFAmHbPpwWHHJpY2hhcmRA c2lnbWEtc3Rhci5hdAAKCRBm+VmF6xi7wXkcD/9UfDRFqvgtZIlacQ/0IvN24xeq +f4aXoXEVyVsCd02jv9pUk3IAezIQyJf3MGtNJ4D/UFXtYfjEYjK5kJpPDP6umaZ ZDnpTzn29HW2aGlgOxW9gU7a3Yze629QasIRP6x7Ht+Hk5eXrvRYrgcmKtw1mm04 SA5v5ZqP3P5r623fpsFiw4Dvl7l6MhDyFeyA2tabNnmv93HgB76PHDtV2Z+SWrC+ ubjlfBQc87QGHW+eTvce+0qw9APMoJpNFjNN4H8P/9VcDTvw+KL2JqQ02HSMWh4z HeHKsv6hbty+GskBhbaWDW7867fPJ3e08TFAAAjeEiBP/CDBwjOTSr3eOw1eHgzU xdAqC2Bz0e5G3shClmVEzzvcP6R2cgNZjeBze5m3wQ1NKHEddk6N9t5K+4NrOpgp gbNN5Q4FAVOBKeQsZWG81bJKGcu7SbShgiKjlxcaRpMyp6LwyD4naauGjmCzYsbf Pd4ilLO1Yocf7nFs2C4vWxE4iAZ6hfQtukerIxCQfb/Y2BaWT3bcWWYHFRFy6Lq+ hTFGnjf+Ro65QCoa1idaLaUdhwAGi6U9sjjL6G/JdQCCE3ftcXLVA9TJz9CNdMb5 98IGznxhczOZc7rHNXOF4km5+OUrU6N+C0WRp3yOoUWcI+Ms4PXHzqIwC5cde/V7 O/o9O1BAoBP6LE1pPg== =5J6E -----END PGP SIGNATURE----- Merge tag 'for-linus-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml Pull UML updates from Richard Weinberger: - set_fs removal - Devicetree support - Many cleanups from Al - Various virtio and build related fixes * tag 'for-linus-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: (31 commits) um: virtio_uml: Allow probing from devicetree um: Add devicetree support um: Extract load file helper from initrd.c um: remove set_fs hostfs: Fix writeback of dirty pages um: Use swap() to make code cleaner um: header debriding - sigio.h um: header debriding - os.h um: header debriding - net_*.h um: header debriding - mem_user.h um: header debriding - activate_ipi() um: common-offsets.h debriding... um, x86: bury crypto_tfm_ctx_offset um: unexport handle_page_fault() um: remove a dangling extern of syscall_trace() um: kill unused cpu() uml/i386: missing include in barrier.h um: stop polluting the namespace with registers.h contents logic_io instance of iounmap() needs volatile on argument um: move amd64 variant of mmap(2) to arch/x86/um/syscalls_64.c ... |
||
Linus Torvalds
|
1be5bdf8cd |
KCSAN updates for v5.17
This series provides KCSAN fixes and also the ability to take memory barriers into account for weakly-ordered systems. This last can increase the probability of detecting certain types of data races. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmHbuRwTHHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jKDPEACWuzYnd/u/02AHyRd3PIF3Px9uFKlK TFwaXX95oYSFCXcrmO42YtDUlZm4QcbwNb85KMCu1DvckRtIsNw0rkBU7BGyqv3Z ZoJEfMNpmC0x9+IFBOeseBHySPVT0x7GmYus05MSh0OLfkbCfyImmxRzgoKJGL+A ADF9EQb4z2feWjmVEoN8uRaarCAD4f77rSXiX6oTCNDuKrHarqMld/TmoXFrJbu2 QtfwHeyvraKBnZdUoYfVbGVenyKb1vMv4bUlvrOcuJEgIi/J/th4FupR3XCGYulI aWJTl2TQTGnMoE8VnFHgI27I841w3k5PVL+Y1hr/S4uN1/rIoQQuBzCtlnFeCksa BiBXsHIchN8N0Dwh8zD8NMd2uxV4t3fmpxXTDAwaOm7vs5hA8AJ0XNu6Sz94Lyjv wk2CxX41WWUNJVo3gh6SrS4mL6lC8+VvHF1hbIap++jrevj58gj1jAR1fdx4ANlT e2qA00EeoMngEogDNZH42/Fxs3H9zxrBta2ZbkPkwzIqTHH+4pIQDCy2xO3T3oxc twdGPYpjYdkf79EGsG4I4R/VA/IfcS09VIWTce8xSDeSnqkgFhcG37r1orJe8hTB tH+ODkNOsz5HaEoa8OoAL4ko2l0fL99p2AtMPpuQfHjRj7aorF+dJIrqCizASxwx 37PjQgOmHeDHgQ== =Q5fg -----END PGP SIGNATURE----- Merge tag 'kcsan.2022.01.09a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull KCSAN updates from Paul McKenney: "This provides KCSAN fixes and also the ability to take memory barriers into account for weakly-ordered systems. This last can increase the probability of detecting certain types of data races" * tag 'kcsan.2022.01.09a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (29 commits) kcsan: Only test clear_bit_unlock_is_negative_byte if arch defines it kcsan: Avoid nested contexts reading inconsistent reorder_access kcsan: Turn barrier instrumentation into macros kcsan: Make barrier tests compatible with lockdep kcsan: Support WEAK_MEMORY with Clang where no objtool support exists compiler_attributes.h: Add __disable_sanitizer_instrumentation objtool, kcsan: Remove memory barrier instrumentation from noinstr objtool, kcsan: Add memory barrier instrumentation to whitelist sched, kcsan: Enable memory barrier instrumentation mm, kcsan: Enable barrier instrumentation x86/qspinlock, kcsan: Instrument barrier of pv_queued_spin_unlock() x86/barriers, kcsan: Use generic instrumentation for non-smp barriers asm-generic/bitops, kcsan: Add instrumentation for barriers locking/atomics, kcsan: Add instrumentation for barriers locking/barriers, kcsan: Support generic instrumentation locking/barriers, kcsan: Add instrumentation for barriers kcsan: selftest: Add test case to check memory barrier instrumentation kcsan: Ignore GCC 11+ warnings about TSan runtime support kcsan: test: Add test cases for memory barrier instrumentation kcsan: test: Match reordered or normal accesses ... |
||
Helge Deller
|
16f035d9e2 |
sections: Fix __is_kernel() to include init ranges
With CONFIG_KALLSYMS_ALL=y, the function is_ksym_addr() is used to determine if a symbol is from inside the kernel range. For that the given symbol address is checked if it's inside the _stext to _end range. Although this is correct, some architectures (e.g. parisc) may have the init area before the _stext address and as such the check in is_ksym_addr() fails. By extending the range check to include the init section, __is_kernel() will now detect symbols in this range as well. This fixes an issue on parisc where addresses of kernel functions in init sections aren't resolved to their symbol names. Signed-off-by: Helge Deller <deller@gmx.de> |
||
Linus Torvalds
|
8efd0d9c31 |
Networking changes for 5.17.
Core ---- - Defer freeing TCP skbs to the BH handler, whenever possible, or at least perform the freeing outside of the socket lock section to decrease cross-CPU allocator work and improve latency. - Add netdevice refcount tracking to locate sources of netdevice and net namespace refcount leaks. - Make Tx watchdog less intrusive - avoid pausing Tx and restarting all queues from a single CPU removing latency spikes. - Various small optimizations throughout the stack from Eric Dumazet. - Make netdev->dev_addr[] constant, force modifications to go via appropriate helpers to allow us to keep addresses in ordered data structures. - Replace unix_table_lock with per-hash locks, improving performance of bind() calls. - Extend skb drop tracepoint with a drop reason. - Allow SO_MARK and SO_PRIORITY setsockopt under CAP_NET_RAW. BPF --- - New helpers: - bpf_find_vma(), find and inspect VMAs for profiling use cases - bpf_loop(), runtime-bounded loop helper trading some execution time for much faster (if at all converging) verification - bpf_strncmp(), improve performance, avoid compiler flakiness - bpf_get_func_arg(), bpf_get_func_ret(), bpf_get_func_arg_cnt() for tracing programs, all inlined by the verifier - Support BPF relocations (CO-RE) in the kernel loader. - Further the support for BTF_TYPE_TAG annotations. - Allow access to local storage in sleepable helpers. - Convert verifier argument types to a composable form with different attributes which can be shared across types (ro, maybe-null). - Prepare libbpf for upcoming v1.0 release by cleaning up APIs, creating new, extensible ones where missing and deprecating those to be removed. Protocols --------- - WiFi (mac80211/cfg80211): - notify user space about long "come back in N" AP responses, allow it to react to such temporary rejections - allow non-standard VHT MCS 10/11 rates - use coarse time in airtime fairness code to save CPU cycles - Bluetooth: - rework of HCI command execution serialization to use a common queue and work struct, and improve handling errors reported in the middle of a batch of commands - rework HCI event handling to use skb_pull_data, avoiding packet parsing pitfalls - support AOSP Bluetooth Quality Report - SMC: - support net namespaces, following the RDMA model - improve connection establishment latency by pre-clearing buffers - introduce TCP ULP for automatic redirection to SMC - Multi-Path TCP: - support ioctls: SIOCINQ, OUTQ, and OUTQNSD - support socket options: IP_TOS, IP_FREEBIND, IP_TRANSPARENT, IPV6_FREEBIND, and IPV6_TRANSPARENT, TCP_CORK and TCP_NODELAY - support cmsgs: TCP_INQ - improvements in the data scheduler (assigning data to subflows) - support fastclose option (quick shutdown of the full MPTCP connection, similar to TCP RST in regular TCP) - MCTP (Management Component Transport) over serial, as defined by DMTF spec DSP0253 - "MCTP Serial Transport Binding". Driver API ---------- - Support timestamping on bond interfaces in active/passive mode. - Introduce generic phylink link mode validation for drivers which don't have any quirks and where MAC capability bits fully express what's supported. Allow PCS layer to participate in the validation. Convert a number of drivers. - Add support to set/get size of buffers on the Rx rings and size of the tx copybreak buffer via ethtool. - Support offloading TC actions as first-class citizens rather than only as attributes of filters, improve sharing and device resource utilization. - WiFi (mac80211/cfg80211): - support forwarding offload (ndo_fill_forward_path) - support for background radar detection hardware - SA Query Procedures offload on the AP side New hardware / drivers ---------------------- - tsnep - FPGA based TSN endpoint Ethernet MAC used in PLCs with real-time requirements for isochronous communication with protocols like OPC UA Pub/Sub. - Qualcomm BAM-DMUX WWAN - driver for data channels of modems integrated into many older Qualcomm SoCs, e.g. MSM8916 or MSM8974 (qcom_bam_dmux). - Microchip LAN966x multi-port Gigabit AVB/TSN Ethernet Switch driver with support for bridging, VLANs and multicast forwarding (lan966x). - iwlmei driver for co-operating between Intel's WiFi driver and Intel's Active Management Technology (AMT) devices. - mse102x - Vertexcom MSE102x Homeplug GreenPHY chips - Bluetooth: - MediaTek MT7921 SDIO devices - Foxconn MT7922A - Realtek RTL8852AE Drivers ------- - Significantly improve performance in the datapaths of: lan78xx, ax88179_178a, lantiq_xrx200, bnxt. - Intel Ethernet NICs: - igb: support PTP/time PEROUT and EXTTS SDP functions on 82580/i354/i350 adapters - ixgbevf: new PF -> VF mailbox API which avoids the risk of mailbox corruption with ESXi - iavf: support configuration of VLAN features of finer granularity, stacked tags and filtering - ice: PTP support for new E822 devices with sub-ns precision - ice: support firmware activation without reboot - Mellanox Ethernet NICs (mlx5): - expose control over IRQ coalescing mode (CQE vs EQE) via ethtool - support TC forwarding when tunnel encap and decap happen between two ports of the same NIC - dynamically size and allow disabling various features to save resources for running in embedded / SmartNIC scenarios - Broadcom Ethernet NICs (bnxt): - use page frag allocator to improve Rx performance - expose control over IRQ coalescing mode (CQE vs EQE) via ethtool - Other Ethernet NICs: - amd-xgbe: add Ryzen 6000 (Yellow Carp) Ethernet support - Microsoft cloud/virtual NIC (mana): - add XDP support (PASS, DROP, TX) - Mellanox Ethernet switches (mlxsw): - initial support for Spectrum-4 ASICs - VxLAN with IPv6 underlay - Marvell Ethernet switches (prestera): - support flower flow templates - add basic IP forwarding support - NXP embedded Ethernet switches (ocelot & felix): - support Per-Stream Filtering and Policing (PSFP) - enable cut-through forwarding between ports by default - support FDMA to improve packet Rx/Tx to CPU - Other embedded switches: - hellcreek: improve trapping management (STP and PTP) packets - qca8k: support link aggregation and port mirroring - Qualcomm 802.11ax WiFi (ath11k): - qca6390, wcn6855: enable 802.11 power save mode in station mode - BSS color change support - WCN6855 hw2.1 support - 11d scan offload support - scan MAC address randomization support - full monitor mode, only supported on QCN9074 - qca6390/wcn6855: report signal and tx bitrate - qca6390: rfkill support - qca6390/wcn6855: regdb.bin support - Intel WiFi (iwlwifi): - support SAR GEO Offset Mapping (SGOM) and Time-Aware-SAR (TAS) in cooperation with the BIOS - support for Optimized Connectivity Experience (OCE) scan - support firmware API version 68 - lots of preparatory work for the upcoming Bz device family - MediaTek WiFi (mt76): - Specific Absorption Rate (SAR) support - mt7921: 160 MHz channel support - RealTek WiFi (rtw88): - Specific Absorption Rate (SAR) support - scan offload - Other WiFi NICs - ath10k: support fetching (pre-)calibration data from nvmem - brcmfmac: configure keep-alive packet on suspend - wcn36xx: beacon filter support Signed-off-by: Jakub Kicinski <kuba@kernel.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmHbkZAACgkQMUZtbf5S IruYkQ//XX7BggcwBfukPK83j0dONolClijqKcKR08g4vB5L8GXvv6OErKIWrh4k h8JanCH352ZkbCSw3MvFdm825UYQv8vPMd6Qks/LJ4aSKqCuy4MIlAo+yOw4Km3O i7++lRfma6DqHHI59wvLjWoxZSPu8lL+rI8UsZ5qMOlnNlGAOXsNrzRjaqQ3FddY AMxZeBUtrPqUCCQZFq3U8apkYzUp7CA/3XR9zRcja3uPbrtOV2G+4whRF90qGNWz Tm/QvJ9F/Ab292cbhxR4KuaQ3hUhaCQyDjbZk3+FZzZpAVhYTVqcNjny6+yXmbiP NXRtwemnl1NlWKMnJM8lEeY48u626tRIkxA/Wtd61uoO5uKUSxfGP+UpUi+DfXbF yIw50VQ7L2bpxXP/HjtmhVgZDaWKYyh22Zw4Hp/muMJz0hgUB0KODY3tf2jUWbjJ 0oEgocWyzhhwMQKqupTDCIaRgIs2ewYr4ZrFDhI3HnHC/vv1VjoPRUPIyxwppD2N cXvZb3B1sWK8iX5gCbISGzyU4bB7I0rvJSTU42ueti7n6NqRFZ79qHQpYnnY+JdO z1qOwY/d/yWfBoXVKRtRg2qz6CdEt5BQklwAgVEBgrFpf58gp694EwGMb1htY14J r/k9bVpmyIFpUnBH2CPMRfBVA3tUTqzyzzFV4AMw40NYLKmhLdo= =KLm3 -----END PGP SIGNATURE----- Merge tag '5.17-net-next' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core ---- - Defer freeing TCP skbs to the BH handler, whenever possible, or at least perform the freeing outside of the socket lock section to decrease cross-CPU allocator work and improve latency. - Add netdevice refcount tracking to locate sources of netdevice and net namespace refcount leaks. - Make Tx watchdog less intrusive - avoid pausing Tx and restarting all queues from a single CPU removing latency spikes. - Various small optimizations throughout the stack from Eric Dumazet. - Make netdev->dev_addr[] constant, force modifications to go via appropriate helpers to allow us to keep addresses in ordered data structures. - Replace unix_table_lock with per-hash locks, improving performance of bind() calls. - Extend skb drop tracepoint with a drop reason. - Allow SO_MARK and SO_PRIORITY setsockopt under CAP_NET_RAW. BPF --- - New helpers: - bpf_find_vma(), find and inspect VMAs for profiling use cases - bpf_loop(), runtime-bounded loop helper trading some execution time for much faster (if at all converging) verification - bpf_strncmp(), improve performance, avoid compiler flakiness - bpf_get_func_arg(), bpf_get_func_ret(), bpf_get_func_arg_cnt() for tracing programs, all inlined by the verifier - Support BPF relocations (CO-RE) in the kernel loader. - Further the support for BTF_TYPE_TAG annotations. - Allow access to local storage in sleepable helpers. - Convert verifier argument types to a composable form with different attributes which can be shared across types (ro, maybe-null). - Prepare libbpf for upcoming v1.0 release by cleaning up APIs, creating new, extensible ones where missing and deprecating those to be removed. Protocols --------- - WiFi (mac80211/cfg80211): - notify user space about long "come back in N" AP responses, allow it to react to such temporary rejections - allow non-standard VHT MCS 10/11 rates - use coarse time in airtime fairness code to save CPU cycles - Bluetooth: - rework of HCI command execution serialization to use a common queue and work struct, and improve handling errors reported in the middle of a batch of commands - rework HCI event handling to use skb_pull_data, avoiding packet parsing pitfalls - support AOSP Bluetooth Quality Report - SMC: - support net namespaces, following the RDMA model - improve connection establishment latency by pre-clearing buffers - introduce TCP ULP for automatic redirection to SMC - Multi-Path TCP: - support ioctls: SIOCINQ, OUTQ, and OUTQNSD - support socket options: IP_TOS, IP_FREEBIND, IP_TRANSPARENT, IPV6_FREEBIND, and IPV6_TRANSPARENT, TCP_CORK and TCP_NODELAY - support cmsgs: TCP_INQ - improvements in the data scheduler (assigning data to subflows) - support fastclose option (quick shutdown of the full MPTCP connection, similar to TCP RST in regular TCP) - MCTP (Management Component Transport) over serial, as defined by DMTF spec DSP0253 - "MCTP Serial Transport Binding". Driver API ---------- - Support timestamping on bond interfaces in active/passive mode. - Introduce generic phylink link mode validation for drivers which don't have any quirks and where MAC capability bits fully express what's supported. Allow PCS layer to participate in the validation. Convert a number of drivers. - Add support to set/get size of buffers on the Rx rings and size of the tx copybreak buffer via ethtool. - Support offloading TC actions as first-class citizens rather than only as attributes of filters, improve sharing and device resource utilization. - WiFi (mac80211/cfg80211): - support forwarding offload (ndo_fill_forward_path) - support for background radar detection hardware - SA Query Procedures offload on the AP side New hardware / drivers ---------------------- - tsnep - FPGA based TSN endpoint Ethernet MAC used in PLCs with real-time requirements for isochronous communication with protocols like OPC UA Pub/Sub. - Qualcomm BAM-DMUX WWAN - driver for data channels of modems integrated into many older Qualcomm SoCs, e.g. MSM8916 or MSM8974 (qcom_bam_dmux). - Microchip LAN966x multi-port Gigabit AVB/TSN Ethernet Switch driver with support for bridging, VLANs and multicast forwarding (lan966x). - iwlmei driver for co-operating between Intel's WiFi driver and Intel's Active Management Technology (AMT) devices. - mse102x - Vertexcom MSE102x Homeplug GreenPHY chips - Bluetooth: - MediaTek MT7921 SDIO devices - Foxconn MT7922A - Realtek RTL8852AE Drivers ------- - Significantly improve performance in the datapaths of: lan78xx, ax88179_178a, lantiq_xrx200, bnxt. - Intel Ethernet NICs: - igb: support PTP/time PEROUT and EXTTS SDP functions on 82580/i354/i350 adapters - ixgbevf: new PF -> VF mailbox API which avoids the risk of mailbox corruption with ESXi - iavf: support configuration of VLAN features of finer granularity, stacked tags and filtering - ice: PTP support for new E822 devices with sub-ns precision - ice: support firmware activation without reboot - Mellanox Ethernet NICs (mlx5): - expose control over IRQ coalescing mode (CQE vs EQE) via ethtool - support TC forwarding when tunnel encap and decap happen between two ports of the same NIC - dynamically size and allow disabling various features to save resources for running in embedded / SmartNIC scenarios - Broadcom Ethernet NICs (bnxt): - use page frag allocator to improve Rx performance - expose control over IRQ coalescing mode (CQE vs EQE) via ethtool - Other Ethernet NICs: - amd-xgbe: add Ryzen 6000 (Yellow Carp) Ethernet support - Microsoft cloud/virtual NIC (mana): - add XDP support (PASS, DROP, TX) - Mellanox Ethernet switches (mlxsw): - initial support for Spectrum-4 ASICs - VxLAN with IPv6 underlay - Marvell Ethernet switches (prestera): - support flower flow templates - add basic IP forwarding support - NXP embedded Ethernet switches (ocelot & felix): - support Per-Stream Filtering and Policing (PSFP) - enable cut-through forwarding between ports by default - support FDMA to improve packet Rx/Tx to CPU - Other embedded switches: - hellcreek: improve trapping management (STP and PTP) packets - qca8k: support link aggregation and port mirroring - Qualcomm 802.11ax WiFi (ath11k): - qca6390, wcn6855: enable 802.11 power save mode in station mode - BSS color change support - WCN6855 hw2.1 support - 11d scan offload support - scan MAC address randomization support - full monitor mode, only supported on QCN9074 - qca6390/wcn6855: report signal and tx bitrate - qca6390: rfkill support - qca6390/wcn6855: regdb.bin support - Intel WiFi (iwlwifi): - support SAR GEO Offset Mapping (SGOM) and Time-Aware-SAR (TAS) in cooperation with the BIOS - support for Optimized Connectivity Experience (OCE) scan - support firmware API version 68 - lots of preparatory work for the upcoming Bz device family - MediaTek WiFi (mt76): - Specific Absorption Rate (SAR) support - mt7921: 160 MHz channel support - RealTek WiFi (rtw88): - Specific Absorption Rate (SAR) support - scan offload - Other WiFi NICs - ath10k: support fetching (pre-)calibration data from nvmem - brcmfmac: configure keep-alive packet on suspend - wcn36xx: beacon filter support" * tag '5.17-net-next' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2048 commits) tcp: tcp_send_challenge_ack delete useless param `skb` net/qla3xxx: Remove useless DMA-32 fallback configuration rocker: Remove useless DMA-32 fallback configuration hinic: Remove useless DMA-32 fallback configuration lan743x: Remove useless DMA-32 fallback configuration net: enetc: Remove useless DMA-32 fallback configuration cxgb4vf: Remove useless DMA-32 fallback configuration cxgb4: Remove useless DMA-32 fallback configuration cxgb3: Remove useless DMA-32 fallback configuration bnx2x: Remove useless DMA-32 fallback configuration et131x: Remove useless DMA-32 fallback configuration be2net: Remove useless DMA-32 fallback configuration vmxnet3: Remove useless DMA-32 fallback configuration bna: Simplify DMA setting net: alteon: Simplify DMA setting myri10ge: Simplify DMA setting qlcnic: Simplify DMA setting net: allwinner: Fix print format page_pool: remove spinlock in page_pool_refill_alloc_cache() amt: fix wrong return type of amt_send_membership_update() ... |
||
Linus Torvalds
|
9b9e211360 |
arm64 updates for 5.17:
- KCSAN enabled for arm64. - Additional kselftests to exercise the syscall ABI w.r.t. SVE/FPSIMD. - Some more SVE clean-ups and refactoring in preparation for SME support (scalable matrix extensions). - BTI clean-ups (SYM_FUNC macros etc.) - arm64 atomics clean-up and codegen improvements. - HWCAPs for FEAT_AFP (alternate floating point behaviour) and FEAT_RPRESS (increased precision of reciprocal estimate and reciprocal square root estimate). - Use SHA3 instructions to speed-up XOR. - arm64 unwind code refactoring/unification. - Avoid DC (data cache maintenance) instructions when DCZID_EL0.DZP == 1 (potentially set by a hypervisor; user-space already does this). - Perf updates for arm64: support for CI-700, HiSilicon PCIe PMU, Marvell CN10K LLC-TAD PMU, miscellaneous clean-ups. - Other fixes and clean-ups; highlights: fix the handling of erratum |
||
Michael Kelley
|
db3c65bc3a |
Drivers: hv: Fix definition of hypercall input & output arg variables
The percpu variables hyperv_pcpu_input_arg and hyperv_pcpu_output_arg have been incorrectly defined since their inception. The __percpu qualifier should be associated with the void * (i.e., a pointer), not with the target of the pointer. This distinction makes no difference to gcc and the generated code, but sparse correctly complains. Fix the definitions in the interest of general correctness in addition to making sparse happy. No functional change. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1640662315-22260-1-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Xiongfeng Wang
|
d5624bb29f |
asm-generic: introduce io_stop_wc() and add implementation for ARM64
For memory accesses with write-combining attributes (e.g. those returned by ioremap_wc()), the CPU may wait for prior accesses to be merged with subsequent ones. But in some situation, such wait is bad for the performance. We introduce io_stop_wc() to prevent the merging of write-combining memory accesses before this macro with those after it. We add implementation for ARM64 using DGH instruction and provide NOP implementation for other architectures. Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com> Suggested-by: Will Deacon <will@kernel.org> Suggested-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20211221035556.60346-1-wangxiongfeng2@huawei.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
||
Al Viro
|
5f174ec3c1 |
logic_io instance of iounmap() needs volatile on argument
... same as the rest of implementations Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> |
||
Tianyu Lan
|
846da38de0 |
net: netvsc: Add Isolation VM support for netvsc driver
In Isolation VM, all shared memory with host needs to mark visible to host via hvcall. vmbus_establish_gpadl() has already done it for netvsc rx/tx ring buffer. The page buffer used by vmbus_sendpacket_ pagebuffer() stills need to be handled. Use DMA API to map/umap these memory during sending/receiving packet and Hyper-V swiotlb bounce buffer dma address will be returned. The swiotlb bounce buffer has been masked to be visible to host during boot up. rx/tx ring buffer is allocated via vzalloc() and they need to be mapped into unencrypted address space(above vTOM) before sharing with host and accessing. Add hv_map/unmap_memory() to map/umap rx /tx ring buffer. Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20211213071407.314309-6-ltykernel@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Wasin Thonkaew
|
733e417518 |
asm-generic/error-injection.h: fix a spelling mistake, and a coding style issue
Fix a spelling mistake "ganerating" -> "generating". Remove trailing semicolon for a macro ALLOW_ERROR_INJECTION to fix a coding style issue. Signed-off-by: Wasin Thonkaew <wasin@wasin.io> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
Ingo Molnar
|
6773cc31a9 |
Linux 5.16-rc5
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmG2fU0eHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGC7EH/3R7Rt+OD8Wn8Ss3 w8V+dBxVwa2u2oMTyUHPxaeOXZ7bi38XlUdLFPOK/76bGwO0a5TmYZqsWdRbGyT0 HfcYjHsQ0lbJXk/nh2oM47oJxJXVpThIHXJEk0FZ0Y5t+DYjIYlNHzqZymUyhLem St74zgWcyT+MXuqY34vB827FJDUnOxhhhi85tObeunaSPAomy9aiYidSC1ARREnz iz2VUntP/QnRnKVvL2nUZNzcz1xL5vfCRSKsRGRSv3qW1Y/1M71ylt6JVmSftWq+ VmMdFxFhdrb1OK/1ct/930Un/UP2NG9EJsWxote2XYlnVSZHzDqH7lUhbqgdCcLz 1m2tVNY= =7wRd -----END PGP SIGNATURE----- Merge tag 'v5.16-rc5' into locking/core, to pick up fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
Arnd Bergmann
|
0f09c27469 |
futex: Fix additional regressions
Naresh reported another architecture that was broken by the same typo that was already fixed for three architectures: mips also refers to the futex_atomic_op_inuser_local() function by the wrong name and runs into a missing closing '}' as well. Going through the source tree the same typo was found in the documentation as well as in the xtensa code, both of which ended up escaping the regression testing so far. In the case of xtensa, it appears that the broken code path is only used when building for platforms that are not supported by the default gcc configuration, so they are impossible to test for with default setups. After going through these more carefully and fixing up the typos, all architectures have been build-tested again to ensure that this is now complete. Fixes: |
||
Marco Elver
|
04def1b9b4 |
asm-generic/bitops, kcsan: Add instrumentation for barriers
Adds the required KCSAN instrumentation for barriers of atomic bitops. Signed-off-by: Marco Elver <elver@google.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
||
Marco Elver
|
2505a51ac6 |
locking/barriers, kcsan: Support generic instrumentation
Thus far only smp_*() barriers had been defined by asm-generic/barrier.h based on __smp_*() barriers, because the !SMP case is usually generic. With the introduction of instrumentation, it also makes sense to have asm-generic/barrier.h assist in the definition of instrumented versions of mb(), rmb(), wmb(), dma_rmb(), and dma_wmb(). Because there is no requirement to distinguish the !SMP case, the definition can be simpler: we can avoid also providing fallbacks for the __ prefixed cases, and only check if `defined(__<barrier>)`, to finally define the KCSAN-instrumented versions. This also allows for the compiler to complain if an architecture accidentally defines both the normal and __ prefixed variant. Signed-off-by: Marco Elver <elver@google.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
||
Marco Elver
|
f948666de5 |
locking/barriers, kcsan: Add instrumentation for barriers
Adds the required KCSAN instrumentation for barriers if CONFIG_SMP. KCSAN supports modeling the effects of: smp_mb() smp_rmb() smp_wmb() smp_store_release() Signed-off-by: Marco Elver <elver@google.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
||
Jakub Kicinski
|
93d5404e89 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/ipa/ipa_main.c |
||
Arnd Bergmann
|
4e0d846344 |
futex: Fix sparc32/m68k/nds32 build regression
The recent futex cleanup series, botched up a rename of some function
names, breaking sparc32, m68k and nds32:
include/asm-generic/futex.h:17:2: error: implicit declaration of function 'futex_atomic_cmpxchg_inatomic_local_generic'; did you mean 'futex_atomic_cmpxchg_inatomic_local'? [-Werror=implicit-function-declaration]
Fix the macros to point to the correct functions.
Fixes:
|
||
Arnd Bergmann
|
3f2bedabb6 |
futex: Ensure futex_atomic_cmpxchg_inatomic() is present
The boot-time detection of futex_atomic_cmpxchg_inatomic() has a bug on some 32-bit arm builds, and Thomas Gleixner suggested that setting CONFIG_HAVE_FUTEX_CMPXCHG would avoid the problem, as it is always present anyway. Looking into which other architectures could do the same showed that almost all architectures have it, the exceptions being: - some old 32-bit MIPS uniprocessor cores without ll/sc - one xtensa variant with no SMP - 32-bit SPARC when built for SMP Fix MIPS And Xtensa by rearranging the generic code to let it be used as a fallback. For SPARC, the SMP definition just ends up turning off futex anyway, so this can be done at Kconfig time instead. Note that sparc32 glibc requires the CASA instruction for its mutexes anyway, which is only available when running on SPARCv9 or LEON CPUs, but needs to be implemented in the sparc32 kernel for those. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Rich Felker <dalias@libc.org> Link: https://lore.kernel.org/r/20211026100432.1730393-1-arnd@kernel.org |
||
Antoine Tenart
|
cb902b332f |
sections: global data can be in .bss
When checking an address is located in a global data section also check for the .bss section as global variables initialized to 0 can be in there (-fzero-initialized-in-bss). This was found when looking at ensure_safe_net_sysctl which was failing to detect non-init sysctl pointing to a global data section when the data was in the .bss section. Signed-off-by: Antoine Tenart <atenart@kernel.org> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
Matthew Wilcox (Oracle)
|
522a0032af |
Add linux/cacheflush.h
Many architectures do not include asm-generic/cacheflush.h, so turn
the includes on their head and add linux/cacheflush.h which includes
asm/cacheflush.h.
Move the flush_dcache_folio() declaration from asm-generic/cacheflush.h
to linux/cacheflush.h and change linux/highmem.h to include
linux/cacheflush.h instead of asm/cacheflush.h so that all necessary
places will see flush_dcache_folio().
More functions should have their default implementations moved in the
future, but those are for follow-on patches. This fixes csky, sparc and
sparc64 which were missed in the commit which added flush_dcache_folio().
Fixes:
|
||
Linus Torvalds
|
e8f023caee |
asm-generic: asm/syscall.h cleanup
This is a single cleanup from Peter Collingbourne, removing some dead code. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmGKm+kACgkQmmx57+YA GNkksg/7BUxJrWFrQmLA3fhzh4wG3KswdrKTGQMf0jRVI1n77vmdfig3hEJmMekH 0SZoIYmPztOSj34+6p4NxuqY/Sk62oYLr8Awo8ZLDhIBWNUJE8UWC07Qb/3DpGbp JfD7/8mXu10htgM85aGlhaVLnHvvqUBR8PlkJUGNxuY5Gy2L+eCkpwCAYlZpSOqr vs0BJWFY1LzO1POcjIq4/IM0PvcU2ncLB5XoxDjjIIWnWKyHzWY21ZvoeaNumvou xqQ/Hj8Sc+ufS0yNlSgIC+bJP0bp1bSw/dALKr8oYxLt7X9LELVY3WXyRH+It4nS b6HPYmga26NVq/u7RrylBA+2fRCDB8E6z73gHt4SeHrRDEvFjhNzIyV+aXPae/dY XI/pjiwpG6k6FpSnF69YZJ/Y+GmUA90V/Jq8aLFZhGz8SgpjRl+2foEUSDhRVXCA jGB1Y388m0e6jPlVJROB7ORzXMd8K5iciyUGqtAI87QCOtPozn10ruh5RdziguKm kDW5IKy9E4l1ch8WRprVbgV5Ew+QWKS1JIbyjDaX3jN0lUPCqgwkwvRxxtgdFnVA Lq5BiUdraSWFUr84rLU3gCRU0+VoEdyZYI+bQGGNlQ4ovmLYU1nLmCU/azMvSEgz ZsoM5YdffShxUtfwMg+W67RpYOjSnV55ZzwN0+d1C2oqz9xECXc= =8EFP -----END PGP SIGNATURE----- Merge tag 'asm-generic-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic cleanup from Arnd Bergmann: "This is a single cleanup from Peter Collingbourne, removing some dead code" * tag 'asm-generic-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: arch: remove unused function syscall_set_arguments() |
||
Linus Torvalds
|
59a2ceeef6 |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: "87 patches. Subsystems affected by this patch series: mm (pagecache and hugetlb), procfs, misc, MAINTAINERS, lib, checkpatch, binfmt, kallsyms, ramfs, init, codafs, nilfs2, hfs, crash_dump, signals, seq_file, fork, sysvfs, kcov, gdb, resource, selftests, and ipc" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (87 commits) ipc/ipc_sysctl.c: remove fallback for !CONFIG_PROC_SYSCTL ipc: check checkpoint_restore_ns_capable() to modify C/R proc files selftests/kselftest/runner/run_one(): allow running non-executable files virtio-mem: disallow mapping virtio-mem memory via /dev/mem kernel/resource: disallow access to exclusive system RAM regions kernel/resource: clean up and optimize iomem_is_exclusive() scripts/gdb: handle split debug for vmlinux kcov: replace local_irq_save() with a local_lock_t kcov: avoid enable+disable interrupts if !in_task() kcov: allocate per-CPU memory on the relevant node Documentation/kcov: define `ip' in the example Documentation/kcov: include types.h in the example sysv: use BUILD_BUG_ON instead of runtime check kernel/fork.c: unshare(): use swap() to make code cleaner seq_file: fix passing wrong private data seq_file: move seq_escape() to a header signal: remove duplicate include in signal.h crash_dump: remove duplicate include in crash_dump.h crash_dump: fix boolreturn.cocci warning hfs/hfsplus: use WARN_ON for sanity check ... |
||
Kefeng Wang
|
8f6e42e833 |
sections: provide internal __is_kernel() and __is_kernel_text() helper
An internal __is_kernel() helper which only check the kernel address ranges, and an internal __is_kernel_text() helper which only check text section ranges. Link: https://lkml.kernel.org/r/20210930071143.63410-7-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Alexander Potapenko <glider@google.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Paul Mackerras <paulus@samba.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Kefeng Wang
|
b9ad8fe7b8 |
sections: move is_kernel_inittext() into sections.h
The is_kernel_inittext() and init_kernel_text() are with same functionality, let's just keep is_kernel_inittext() and move it into sections.h, then update all the callers. Link: https://lkml.kernel.org/r/20210930071143.63410-5-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Alexander Potapenko <glider@google.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Paul Mackerras <paulus@samba.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Kefeng Wang
|
a20deb3a34 |
sections: move and rename core_kernel_data() to is_kernel_core_data()
Move core_kernel_data() into sections.h and rename it to is_kernel_core_data(), also make it return bool value, then update all the callers. Link: https://lkml.kernel.org/r/20210930071143.63410-4-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexander Potapenko <glider@google.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Paul Mackerras <paulus@samba.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Kefeng Wang
|
1b1ad288b8 |
kallsyms: remove arch specific text and data check
Patch series "sections: Unify kernel sections range check and use", v4.
There are three head files(kallsyms.h, kernel.h and sections.h) which
include the kernel sections range check, let's make some cleanup and unify
them.
1. cleanup arch specific text/data check and fix address boundary check
in kallsyms.h
2. make all the basic/core kernel range check function into sections.h
3. update all the callers, and use the helper in sections.h to simplify
the code
After this series, we have 5 APIs about kernel sections range check in
sections.h
* is_kernel_rodata() --- already in sections.h
* is_kernel_core_data() --- come from core_kernel_data() in kernel.h
* is_kernel_inittext() --- come from kernel.h and kallsyms.h
* __is_kernel_text() --- add new internal helper
* __is_kernel() --- add new internal helper
Note: For the last two helpers, people should not use directly, consider to
use corresponding function in kallsyms.h.
This patch (of 11):
Remove arch specific text and data check after commit
|
||
Linus Torvalds
|
512b7931ad |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: "257 patches. Subsystems affected by this patch series: scripts, ocfs2, vfs, and mm (slab-generic, slab, slub, kconfig, dax, kasan, debug, pagecache, gup, swap, memcg, pagemap, mprotect, mremap, iomap, tracing, vmalloc, pagealloc, memory-failure, hugetlb, userfaultfd, vmscan, tools, memblock, oom-kill, hugetlbfs, migration, thp, readahead, nommu, ksm, vmstat, madvise, memory-hotplug, rmap, zsmalloc, highmem, zram, cleanups, kfence, and damon)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (257 commits) mm/damon: remove return value from before_terminate callback mm/damon: fix a few spelling mistakes in comments and a pr_debug message mm/damon: simplify stop mechanism Docs/admin-guide/mm/pagemap: wordsmith page flags descriptions Docs/admin-guide/mm/damon/start: simplify the content Docs/admin-guide/mm/damon/start: fix a wrong link Docs/admin-guide/mm/damon/start: fix wrong example commands mm/damon/dbgfs: add adaptive_targets list check before enable monitor_on mm/damon: remove unnecessary variable initialization Documentation/admin-guide/mm/damon: add a document for DAMON_RECLAIM mm/damon: introduce DAMON-based Reclamation (DAMON_RECLAIM) selftests/damon: support watermarks mm/damon/dbgfs: support watermarks mm/damon/schemes: activate schemes based on a watermarks mechanism tools/selftests/damon: update for regions prioritization of schemes mm/damon/dbgfs: support prioritization weights mm/damon/vaddr,paddr: support pageout prioritization mm/damon/schemes: prioritize regions within the quotas mm/damon/selftests: support schemes quotas mm/damon/dbgfs: support quotas of schemes ... |
||
Christophe Leroy
|
e5ae372832 |
mm: make generic arch_is_kernel_initmem_freed() do what it says
Commit
|
||
Linus Torvalds
|
95faf6ba65 |
Driver core changes for 5.16-rc1
Here is the big set of driver core changes for 5.16-rc1. All of these have been in linux-next for a while now with no reported problems. Included in here are: - big update and cleanup of the sysfs abi documentation files and scripts from Mauro. We are almost at the place where we can properly check that the running kernel's sysfs abi is documented fully. - firmware loader updates - dyndbg updates - kernfs cleanups and fixes from Christoph - device property updates - component fix - other minor driver core cleanups and fixes Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYYPbjQ8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ync9gCfXKMUI1GAnCfJWAwTdTcd18q5akoAoMw32/AH 0yh5TjAWFyFd7xz5d7qs =itsC -----END PGP SIGNATURE----- Merge tag 'driver-core-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the big set of driver core changes for 5.16-rc1. All of these have been in linux-next for a while now with no reported problems. Included in here are: - big update and cleanup of the sysfs abi documentation files and scripts from Mauro. We are almost at the place where we can properly check that the running kernel's sysfs abi is documented fully. - firmware loader updates - dyndbg updates - kernfs cleanups and fixes from Christoph - device property updates - component fix - other minor driver core cleanups and fixes" * tag 'driver-core-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (122 commits) device property: Drop redundant NULL checks x86/build: Tuck away built-in firmware under FW_LOADER vmlinux.lds.h: wrap built-in firmware support under FW_LOADER firmware_loader: move struct builtin_fw to the only place used x86/microcode: Use the firmware_loader built-in API firmware_loader: remove old DECLARE_BUILTIN_FIRMWARE() firmware_loader: formalize built-in firmware API component: do not leave master devres group open after bind dyndbg: refine verbosity 1-4 summary-detail gpiolib: acpi: Replace custom code with device_match_acpi_handle() i2c: acpi: Replace custom function with device_match_acpi_handle() driver core: Provide device_match_acpi_handle() helper dyndbg: fix spurious vNpr_info change dyndbg: no vpr-info on empty queries dyndbg: vpr-info on remove-module complete, not starting device property: Add missed header in fwnode.h Documentation: dyndbg: Improve cli param examples dyndbg: Remove support for ddebug_query param dyndbg: make dyndbg a known cli param dyndbg: show module in vpr-info in dd-exec-queries ... |
||
Linus Torvalds
|
44261f8e28 |
hyperv-next for 5.16
-----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEIbPD0id6easf0xsudhRwX5BBoF4FAmGBMQUTHHdlaS5saXVA a2VybmVsLm9yZwAKCRB2FHBfkEGgXmE5B/9MK3Ju+tc6C8eyR3Ic4XBYHJ3voEKO M+R90gggBriDOgkz4B8vF+k0aD8wevXAUtmCSXonDzCh5H7GoyfrVZmJEVkwlioH ZMSMlFHcjGhCPIXhLbNtfo/NsAYEtT/lRM2lLGCSbdGuKabylXKujVdhuSIcRPdj Rj5innUgcAywOoxG6WzFt3JBzM33UQErCGfUF2b7Rvp9E+Zii4vIMxkMzUpnkEHH F8WMEdL0DqH5ThOs0MslNgy03pUC9wk1d5DNd9ytYHqiSQtcQZhFHw/P6dxzUFlW OptWv31PXUIsiJf4Zi9hmfjgUl+KZHeacZ2hXtidAo86VPcIjVs25OQW =40fn -----END PGP SIGNATURE----- Merge tag 'hyperv-next-signed-20211102' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv updates from Wei Liu: - Initial patch set for Hyper-V isolation VM support (Tianyu Lan) - Fix a warning on preemption (Vitaly Kuznetsov) - A bunch of misc cleanup patches * tag 'hyperv-next-signed-20211102' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: x86/hyperv: Protect set_hv_tscchange_cb() against getting preempted Drivers: hv : vmbus: Adding NULL pointer check x86/hyperv: Remove duplicate include x86/hyperv: Remove duplicated include in hv_init Drivers: hv: vmbus: Remove unused code to check for subchannels Drivers: hv: vmbus: Initialize VMbus ring buffer for Isolation VM Drivers: hv: vmbus: Add SNP support for VMbus channel initiate message x86/hyperv: Add ghcb hvcall support for SNP VM x86/hyperv: Add Write/Read MSR registers via ghcb page Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM x86/hyperv: Add new hvcall guest address host visibility support x86/hyperv: Initialize shared memory boundary in the Isolation VM. x86/hyperv: Initialize GHCB page in Isolation VM |
||
Linus Torvalds
|
cc0356d6a0 |
- Do not #GP on userspace use of CLI/STI but pretend it was a NOP to
keep old userspace from breaking. Adjust the corresponding iopl selftest to that. - Improve stack overflow warnings to say which stack got overflowed and raise the exception stack sizes to 2 pages since overflowing the single page of exception stack is very easy to do nowadays with all the tracing machinery enabled. With that, rip out the custom mapping of AMD SEV's too. - A bunch of changes in preparation for FGKASLR like supporting more than 64K section headers in the relocs tool, correct ORC lookup table size to cover the whole kernel .text and other adjustments. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmF/uugACgkQEsHwGGHe VUroKw//e8BJ3Aun8bg00FHxfiMGbPYcozjLGDkaoMtMDZ8WlfCUrvtqYICEr8eB UU0eRyygAPI167dre1O9JvAcbilkNTKntaU6qbu/ZVyUwS3+Jkjwsotbqn3xKtkd QDDTDNiCU+beCJ2ZbspbrPgEh13+H0MwMHUfRxZB9Scpmo6aGSEaU3g295f6GX57 VFGJ/LNov5MV1dTD7Pp/h6/Nb+R6WmflKcBzJmQxYuKyKX+g1xsSv0VSga+t+uf3 M9pUkizqTiUxzC2eLgtcEZTqqBHu810E8M76FmhKBUMilsFJT5YAJTiqyahwHXds HYarOFRgcnFuJPd29vn8UHjqeeoi6ru8GtcZYzccEc7U3ku/gXPaDJ9ffmvhs7vU pJX5Um3GiiFm0w/ZZOKDqh78wRAsCKLN+jIoyszuhkkNchZSj/jKfOgdd3EmcZst 6L6rxBA4oRHwNOgM7uVMp+jFeRe1/prR280OWWH0D4QmmuqybThOdO23Iuh/Deth W3qPUH3UQtfSWxGy2yODzJ1ciuGAr/AzJZ9zjg04e3Vl0DkEpyWtLKJiG3ClXZag Nj+3xc4xYH2Aw+M0HRaONk5XVKLpqVjuAfgU5iLQa0YSUbtrR+wCWvY8KgQNbAqK xZmzYzQ89stwVCuGKx10gPsL3jSJ3VCylMfqdHD2Ajmld1yApr0= =DOZU -----END PGP SIGNATURE----- Merge tag 'x86_core_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 core updates from Borislav Petkov: - Do not #GP on userspace use of CLI/STI but pretend it was a NOP to keep old userspace from breaking. Adjust the corresponding iopl selftest to that. - Improve stack overflow warnings to say which stack got overflowed and raise the exception stack sizes to 2 pages since overflowing the single page of exception stack is very easy to do nowadays with all the tracing machinery enabled. With that, rip out the custom mapping of AMD SEV's too. - A bunch of changes in preparation for FGKASLR like supporting more than 64K section headers in the relocs tool, correct ORC lookup table size to cover the whole kernel .text and other adjustments. * tag 'x86_core_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: selftests/x86/iopl: Adjust to the faked iopl CLI/STI usage vmlinux.lds.h: Have ORC lookup cover entire _etext - _stext x86/boot/compressed: Avoid duplicate malloc() implementations x86/boot: Allow a "silent" kaslr random byte fetch x86/tools/relocs: Support >64K section headers x86/sev: Make the #VC exception stacks part of the default stacks storage x86: Increase exception stack sizes x86/mm/64: Improve stack overflow warnings x86/iopl: Fake iopl(3) CLI/STI usage |
||
Linus Torvalds
|
79ef0c0014 |
Tracing updates for 5.16:
- kprobes: Restructured stack unwinder to show properly on x86 when a stack dump happens from a kretprobe callback. - Fix to bootconfig parsing - Have tracefs allow owner and group permissions by default (only denying others). There's been pressure to allow non root to tracefs in a controlled fashion, and using groups is probably the safest. - Bootconfig memory managament updates. - Bootconfig clean up to have the tools directory be less dependent on changes in the kernel tree. - Allow perf to be traced by function tracer. - Rewrite of function graph tracer to be a callback from the function tracer instead of having its own trampoline (this change will happen on an arch by arch basis, and currently only x86_64 implements it). - Allow multiple direct trampolines (bpf hooks to functions) be batched together in one synchronization. - Allow histogram triggers to add variables that can perform calculations against the event's fields. - Use the linker to determine architecture callbacks from the ftrace trampoline to allow for proper parameter prototypes and prevent warnings from the compiler. - Extend histogram triggers to key off of variables. - Have trace recursion use bit magic to determine preempt context over if branches. - Have trace recursion disable preemption as all use cases do anyway. - Added testing for verification of tracing utilities. - Various small clean ups and fixes. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYYBdxhQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qp1sAQD2oYFwaG3sx872gj/myBcHIBSKdiki Hry5csd8zYDBpgD+Poylopt5JIbeDuoYw/BedgEXmscZ8Qr7VzjAXdnv/Q4= =Loz8 -----END PGP SIGNATURE----- Merge tag 'trace-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: - kprobes: Restructured stack unwinder to show properly on x86 when a stack dump happens from a kretprobe callback. - Fix to bootconfig parsing - Have tracefs allow owner and group permissions by default (only denying others). There's been pressure to allow non root to tracefs in a controlled fashion, and using groups is probably the safest. - Bootconfig memory managament updates. - Bootconfig clean up to have the tools directory be less dependent on changes in the kernel tree. - Allow perf to be traced by function tracer. - Rewrite of function graph tracer to be a callback from the function tracer instead of having its own trampoline (this change will happen on an arch by arch basis, and currently only x86_64 implements it). - Allow multiple direct trampolines (bpf hooks to functions) be batched together in one synchronization. - Allow histogram triggers to add variables that can perform calculations against the event's fields. - Use the linker to determine architecture callbacks from the ftrace trampoline to allow for proper parameter prototypes and prevent warnings from the compiler. - Extend histogram triggers to key off of variables. - Have trace recursion use bit magic to determine preempt context over if branches. - Have trace recursion disable preemption as all use cases do anyway. - Added testing for verification of tracing utilities. - Various small clean ups and fixes. * tag 'trace-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (101 commits) tracing/histogram: Fix semicolon.cocci warnings tracing/histogram: Fix documentation inline emphasis warning tracing: Increase PERF_MAX_TRACE_SIZE to handle Sentinel1 and docker together tracing: Show size of requested perf buffer bootconfig: Initialize ret in xbc_parse_tree() ftrace: do CPU checking after preemption disabled ftrace: disable preemption when recursion locked tracing/histogram: Document expression arithmetic and constants tracing/histogram: Optimize division by a power of 2 tracing/histogram: Covert expr to const if both operands are constants tracing/histogram: Simplify handling of .sym-offset in expressions tracing: Fix operator precedence for hist triggers expression tracing: Add division and multiplication support for hist triggers tracing: Add support for creating hist trigger variables from literal selftests/ftrace: Stop tracing while reading the trace file by default MAINTAINERS: Update KPROBES and TRACING entries test_kprobes: Move it from kernel/ to lib/ docs, kprobes: Remove invalid URL and add new reference samples/kretprobes: Fix return value if register_kretprobe() failed lib/bootconfig: Fix the xbc_get_info kerneldoc ... |
||
Linus Torvalds
|
49f8275c7d |
Memory folios
Add memory folios, a new type to represent either order-0 pages or the head page of a compound page. This should be enough infrastructure to support filesystems converting from pages to folios. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEejHryeLBw/spnjHrDpNsjXcpgj4FAmF9uI0ACgkQDpNsjXcp gj7MUAf/R7LCZ+xFiIedw7SAgb/DGK0C9uVjuBEIZgAw21ZUw/GuPI6cuKBMFGGf rRcdtlvMpwi7yZJcoNXxaqU/xPaaJMjf2XxscIvYJP1mjlZVuwmP9dOx0neNvWOc T+8lqR6c1TLl82lpqIjGFLwvj2eVowq2d3J5jsaIJFd4odmmYVInrhJXOzC/LQ54 Niloj5ksehf+KUIRLDz7ycppvIHhlVsoAl0eM2dWBAtL0mvT7Nyn/3y+vnMfV2v3 Flb4opwJUgTJleYc16oxTn9svT2yS8q2uuUemRDLW8ABghoAtH3fUUk43RN+5Krd LYCtbeawtkikPVXZMfWybsx5vn0c3Q== =7SBe -----END PGP SIGNATURE----- Merge tag 'folio-5.16' of git://git.infradead.org/users/willy/pagecache Pull memory folios from Matthew Wilcox: "Add memory folios, a new type to represent either order-0 pages or the head page of a compound page. This should be enough infrastructure to support filesystems converting from pages to folios. The point of all this churn is to allow filesystems and the page cache to manage memory in larger chunks than PAGE_SIZE. The original plan was to use compound pages like THP does, but I ran into problems with some functions expecting only a head page while others expect the precise page containing a particular byte. The folio type allows a function to declare that it's expecting only a head page. Almost incidentally, this allows us to remove various calls to VM_BUG_ON(PageTail(page)) and compound_head(). This converts just parts of the core MM and the page cache. For 5.17, we intend to convert various filesystems (XFS and AFS are ready; other filesystems may make it) and also convert more of the MM and page cache to folios. For 5.18, multi-page folios should be ready. The multi-page folios offer some improvement to some workloads. The 80% win is real, but appears to be an artificial benchmark (postgres startup, which isn't a serious workload). Real workloads (eg building the kernel, running postgres in a steady state, etc) seem to benefit between 0-10%. I haven't heard of any performance losses as a result of this series. Nobody has done any serious performance tuning; I imagine that tweaking the readahead algorithm could provide some more interesting wins. There are also other places where we could choose to create large folios and currently do not, such as writes that are larger than PAGE_SIZE. I'd like to thank all my reviewers who've offered review/ack tags: Christoph Hellwig, David Howells, Jan Kara, Jeff Layton, Johannes Weiner, Kirill A. Shutemov, Michal Hocko, Mike Rapoport, Vlastimil Babka, William Kucharski, Yu Zhao and Zi Yan. I'd also like to thank those who gave feedback I incorporated but haven't offered up review tags for this part of the series: Nick Piggin, Mel Gorman, Ming Lei, Darrick Wong, Ted Ts'o, John Hubbard, Hugh Dickins, and probably a few others who I forget" * tag 'folio-5.16' of git://git.infradead.org/users/willy/pagecache: (90 commits) mm/writeback: Add folio_write_one mm/filemap: Add FGP_STABLE mm/filemap: Add filemap_get_folio mm/filemap: Convert mapping_get_entry to return a folio mm/filemap: Add filemap_add_folio() mm/filemap: Add filemap_alloc_folio mm/page_alloc: Add folio allocation functions mm/lru: Add folio_add_lru() mm/lru: Convert __pagevec_lru_add_fn to take a folio mm: Add folio_evictable() mm/workingset: Convert workingset_refault() to take a folio mm/filemap: Add readahead_folio() mm/filemap: Add folio_mkwrite_check_truncate() mm/filemap: Add i_blocks_per_folio() mm/writeback: Add folio_redirty_for_writepage() mm/writeback: Add folio_account_redirty() mm/writeback: Add folio_clear_dirty_for_io() mm/writeback: Add folio_cancel_dirty() mm/writeback: Add folio_account_cleaned() mm/writeback: Add filemap_dirty_folio() ... |
||
Tianyu Lan
|
20c89a559e |
x86/hyperv: Add ghcb hvcall support for SNP VM
hyperv provides ghcb hvcall to handle VMBus HVCALL_SIGNAL_EVENT and HVCALL_POST_MESSAGE msg in SNP Isolation VM. Add such support. Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Link: https://lore.kernel.org/r/20211025122116.264793-8-ltykernel@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Tianyu Lan
|
faff44069f |
x86/hyperv: Add Write/Read MSR registers via ghcb page
Hyperv provides GHCB protocol to write Synthetic Interrupt Controller MSR registers in Isolation VM with AMD SEV SNP and these registers are emulated by hypervisor directly. Hyperv requires to write SINTx MSR registers twice. First writes MSR via GHCB page to communicate with hypervisor and then writes wrmsr instruction to talk with paravisor which runs in VMPL0. Guest OS ID MSR also needs to be set via GHCB page. Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Link: https://lore.kernel.org/r/20211025122116.264793-7-ltykernel@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Tianyu Lan
|
810a521265 |
x86/hyperv: Add new hvcall guest address host visibility support
Add new hvcall guest address host visibility support to mark memory visible to host. Call it inside set_memory_decrypted /encrypted(). Add HYPERVISOR feature check in the hv_is_isolation_supported() to optimize in non-virtualization environment. Acked-by: Dave Hansen <dave.hansen@intel.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Link: https://lore.kernel.org/r/20211025122116.264793-4-ltykernel@gmail.com [ wei: fix conflicts with tip ] Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Tianyu Lan
|
af788f355e |
x86/hyperv: Initialize shared memory boundary in the Isolation VM.
Hyper-V exposes shared memory boundary via cpuid HYPERV_CPUID_ISOLATION_CONFIG and store it in the shared_gpa_boundary of ms_hyperv struct. This prepares to share memory with host for SNP guest. Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Link: https://lore.kernel.org/r/20211025122116.264793-3-ltykernel@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Tianyu Lan
|
0cc4f6d9f0 |
x86/hyperv: Initialize GHCB page in Isolation VM
Hyperv exposes GHCB page via SEV ES GHCB MSR for SNP guest to communicate with hypervisor. Map GHCB page for all cpus to read/write MSR register and submit hvcall request via ghcb page. Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Link: https://lore.kernel.org/r/20211025122116.264793-2-ltykernel@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Kristen Carlson Accardi
|
ca136cac37 |
vmlinux.lds.h: Have ORC lookup cover entire _etext - _stext
When using -ffunction-sections to place each function in its own text section (so it can be randomized at load time in the future FGKASLR series), the linker will place most of the functions into separate .text.* sections. SIZEOF(.text) won't work here for calculating the ORC lookup table size, so the total text size must be calculated to include .text AND all .text.* sections. Signed-off-by: Kristen Carlson Accardi <kristen@linux.intel.com> [ alobakin: move it to vmlinux.lds.h and make arch-indep ] Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Tony Luck <tony.luck@intel.com> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Tested-by: Tony Luck <tony.luck@intel.com> Link: https://lore.kernel.org/r/20211013175742.1197608-5-keescook@chromium.org |
||
Luis Chamberlain
|
771856caf5 |
vmlinux.lds.h: wrap built-in firmware support under FW_LOADER
The firmware loader built-in firmware is only available when FW_LOADER is built-in, so tuck away the sections for built-in firmware under it. This ensures no oddball user tries to uses these sections without first enabling FW_LOADER=y. Reviewed-by: Borislav Petkov <bp@suse.de> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Link: https://lore.kernel.org/r/20211021155843.1969401-6-mcgrof@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
Steven Rostedt (VMware)
|
34cdd18b8d |
tracing: Use linker magic instead of recasting ftrace_ops_list_func()
In an effort to enable -Wcast-function-type in the top-level Makefile to support Control Flow Integrity builds, all function casts need to be removed. This means that ftrace_ops_list_func() can no longer be defined as ftrace_ops_no_ops(). The reason for ftrace_ops_no_ops() is to use that when an architecture calls ftrace_ops_list_func() with only two parameters (called from assembly). And to make sure there's no C side-effects, those archs call ftrace_ops_no_ops() which only has two parameters, as ftrace_ops_list_func() has four parameters. Instead of a typecast, use vmlinux.lds.h to define ftrace_ops_list_func() to arch_ftrace_ops_list_func() that will define the proper set of parameters. Link: https://lore.kernel.org/r/20200614070154.6039-1-oscar.carter@gmx.com Link: https://lkml.kernel.org/r/20200617165616.52241bde@oasis.local.home Link: https://lore.kernel.org/all/20211005053922.GA702049@embeddedor/ Requested-by: Oscar Carter <oscar.carter@gmx.com> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
||
Matthew Wilcox (Oracle)
|
08b0b0059b |
mm: Add flush_dcache_folio()
This is a default implementation which calls flush_dcache_page() on each page in the folio. If architectures can do better, they should implement their own version of it. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Vlastimil Babka <vbabka@suse.cz> |
||
Linus Torvalds
|
0dcf60d001 |
asm-generic: build fixes for v5.15
There is one build fix for Arm platforms that ended up impacting most architectures because of the way the drivers/firmware Kconfig file is wired up: The CONFIG_QCOM_SCM dependency have caused a number of randconfig regressions over time, and some still remain in v5.15-rc4. The fix we agreed on in the end is to make this symbol selected by any driver using it, and then building it even for non-Arm platforms with CONFIG_COMPILE_TEST. To make this work on all architectures, the drivers/firmware/Kconfig file needs to be included for all architectures to make the symbol itself visible. In a separate discussion, we found that a sound driver patch that is pending for v5.16 needs the same change to include this Kconfig file, so the easiest solution seems to have my Kconfig rework included in v5.15. There is a small merge conflict against an earlier partial fix for the QCOM_SCM dependency problems. Finally, the branch also includes a small unrelated build fix for NOMMU architectures. Link: https://lore.kernel.org/all/20210928153508.101208f8@canb.auug.org.au/ Link: https://lore.kernel.org/all/20210928075216.4193128-1-arnd@kernel.org/ Link: https://lore.kernel.org/all/20211007151010.333516-1-arnd@kernel.org/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmFgVp8ACgkQmmx57+YA GNlQoA/+O0ljtTy5D0MjRGmFDs11M5AtKNrfys82lm2GeEnc4lnxn722jLk8kR6s y6DSOWFs7w1bqhKExQNehZYtJO3sgW/9qiLMV9qfOx1Nc6WwhDPcYM9bMyGlpTmL M456nh8NopixV7slanNtfz1e0kbMKoK+4Ub7M5OHepK6x9FKQXQYQpeoBxaXHmWZ 9eaRiL/CsRHO/cSkvpq1GtL7IVrudvij3FDHzxoDGFFjkCUm9LiN/8yrnVxHA9G7 3EPyJazI559SsnxXJR32udGPJWZV1HZ7D5gbxDvzr5rZ9EX0JpyPGJsuXUR1wqlS UB2Y7AUTSxkwDiZ8UhPoXn6i67WAirzEsP2WmdS4v6NEbxlNloLGTIeGwcwkCRMU DBvMtDW8kKusgVu/OkEUgoC6MTRt+Mg+gZcQI/C4sp0MqZGaMY6c7abnYjqwEzBV ARS7bUYyME2GL6wNDPFB8esuD9jjdFXy96bGHATmzMxT3012K3X7ufFOzJZ+GOF9 pan00fgoC17oiI+Xu/sZEHns6KvMTSE11Aw3uk+yhHxYtZbzWi2B5Nk+4tBdsOxF PAZdZ5qsyuEcBw+PyfbyZIHWOrlbvZkrmjiIsMJo63cIXuOtgraCjvRRAwe/ZwoU PXgPcUmrlAs06WjKhuQAZWt6bww7cEP2XyOYlDqwZ4Vj0dqav6g= =187C -----END PGP SIGNATURE----- Merge tag 'asm-generic-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic fixes from Arnd Bergmann: "There is one build fix for Arm platforms that ended up impacting most architectures because of the way the drivers/firmware Kconfig file is wired up: The CONFIG_QCOM_SCM dependency have caused a number of randconfig regressions over time, and some still remain in v5.15-rc4. The fix we agreed on in the end is to make this symbol selected by any driver using it, and then building it even for non-Arm platforms with CONFIG_COMPILE_TEST. To make this work on all architectures, the drivers/firmware/Kconfig file needs to be included for all architectures to make the symbol itself visible. In a separate discussion, we found that a sound driver patch that is pending for v5.16 needs the same change to include this Kconfig file, so the easiest solution seems to have my Kconfig rework included in v5.15. Finally, the branch also includes a small unrelated build fix for NOMMU architectures" Link: https://lore.kernel.org/all/20210928153508.101208f8@canb.auug.org.au/ Link: https://lore.kernel.org/all/20210928075216.4193128-1-arnd@kernel.org/ Link: https://lore.kernel.org/all/20211007151010.333516-1-arnd@kernel.org/ * tag 'asm-generic-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: asm-generic/io.h: give stub iounmap() on !MMU same prototype as elsewhere qcom_scm: hide Kconfig symbol firmware: include drivers/firmware/Kconfig unconditionally |
||
Adam Borowski
|
2fbc349911 |
asm-generic/io.h: give stub iounmap() on !MMU same prototype as elsewhere
It made -Werror sad. Signed-off-by: Adam Borowski <kilobyte@angband.pl> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
Linus Torvalds
|
316e8d79a0 |
pci_iounmap'2: Electric Boogaloo: try to make sense of it all
Nathan Chancellor reports that the recent change to pci_iounmap in commit |
||
Helge Deller
|
9caea00076 |
parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled
Linus noticed odd declaration rules for pci_iounmap() in iomap.h and
pci_iomap.h, where it dependend on either NO_GENERIC_PCI_IOPORT_MAP or
GENERIC_IOMAP when CONFIG_PCI was disabled.
Testing on parisc seems to indicate that we need pci_iounmap() only when
CONFIG_PCI is enabled, so the declaration of pci_iounmap() can be moved
cleanly into pci_iomap.h in sync with the declarations of pci_iomap().
Link: https://lore.kernel.org/all/CAHk-=wjRrh98pZoQ+AzfWmsTZacWxTJKXZ9eKU2X_0+jM=O8nw@mail.gmail.com/
Signed-off-by: Helge Deller <deller@gmx.de>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes:
|
||
Linus Torvalds
|
ff1ffd71d5 |
hyperv-fixes for 5.15-rc2
-----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEIbPD0id6easf0xsudhRwX5BBoF4FAmFB6pwTHHdlaS5saXVA a2VybmVsLm9yZwAKCRB2FHBfkEGgXoo5CAChbzKMMbqBHArnNCO+pKkUWmc7eYqJ U368ux75wWEy6ywCUxCHqhwnTrp5KJhyjTPi89V8Vwh+aNG6q86g2dT3I6qsoIby Dav9yw1NiExxNzAEiJVH/WgE+WGZUvWqzbKixdZWjDk9DWhVv7h96chik9dvh9SW /nm27o4sNmnFETQ+kh/hmX+8T6V8HeqZuL9WrGw4EW9At/WE16vjk47Wm5gJRl+j Z1KylALvOiarzzMH3Qx1IxvZ1789JtCIr2b5rHJH8tCPvPF0P2dihm/Wjf6xguyT tDMvquBdQnfugbZXQDy58Agp34Dw+fHCFaOmoruJePa78qqBYzujHvW9 =gBaz -----END PGP SIGNATURE----- Merge tag 'hyperv-fixes-signed-20210915' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv fixes from Wei Liu: - Fix kernel crash caused by uio driver (Vitaly Kuznetsov) - Remove on-stack cpumask from HV APIC code (Wei Liu) * tag 'hyperv-fixes-signed-20210915' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: x86/hyperv: remove on-stack cpumask from hv_send_ipi_mask_allbutself asm-generic/hyperv: provide cpumask_to_vpset_noself Drivers: hv: vmbus: Fix kernel crash upon unbinding a device from uio_hv_generic driver |
||
Peter Collingbourne
|
7962c2eddb
|
arch: remove unused function syscall_set_arguments()
This function appears to have been unused since it was first introduced in
commit
|
||
Linus Torvalds
|
316346243b |
Merge branch 'gcc-min-version-5.1' (make gcc-5.1 the minimum version)
Merge patch series from Nick Desaulniers to update the minimum gcc version to 5.1. This is some of the left-overs from the merge window that I didn't want to deal with yesterday, so it comes in after -rc1 but was sent before. Gcc-4.9 support has been an annoyance for some time, and with -Werror I had the choice of applying a fairly big patch from Kees Cook to remove a fair number of initializer warnings (still leaving some), or this patch series from Nick that just removes the source of the problem. The initializer cleanups might still be worth it regardless, but honestly, I preferred just tackling the problem with gcc-4.9 head-on. We've been more aggressiuve about no longer having to care about compilers that were released a long time ago, and I think it's been a good thing. I added a couple of patches on top to sort out a few left-overs now that we no longer support gcc-4.x. As noted by Arnd, as a result of this minimum compiler version upgrade we can probably change our use of '--std=gnu89' to '--std=gnu11', and finally start using local loop declarations etc. But this series does _not_ yet do that. Link: https://lore.kernel.org/all/20210909182525.372ee687@canb.auug.org.au/ Link: https://lore.kernel.org/lkml/CAK7LNASs6dvU6D3jL2GG3jW58fXfaj6VNOe55NJnTB8UPuk2pA@mail.gmail.com/ Link: https://github.com/ClangBuiltLinux/linux/issues/1438 * emailed patches from Nick Desaulniers <ndesaulniers@google.com>: Drop some straggling mentions of gcc-4.9 as being stale compiler_attributes.h: drop __has_attribute() support for gcc4 vmlinux.lds.h: remove old check for GCC 4.9 compiler-gcc.h: drop checks for older GCC versions Makefile: drop GCC < 5 -fno-var-tracking-assignments workaround arm64: remove GCC version check for ARCH_SUPPORTS_INT128 powerpc: remove GCC version check for UPD_CONSTR riscv: remove Kconfig check for GCC version for ARCH_RV64I Kconfig.debug: drop GCC 5+ version check for DWARF5 mm/ksm: remove old GCC 4.9+ check compiler.h: drop fallback overflow checkers Documentation: raise minimum supported version of GCC to 5.1 |
||
Nick Desaulniers
|
6f20fa2dfa |
vmlinux.lds.h: remove old check for GCC 4.9
Now that GCC 5.1 is the minimally supported version of GCC, we can
effectively revert commit
|
||
Wei Liu
|
7ad9bb9d0f |
asm-generic/hyperv: provide cpumask_to_vpset_noself
This is a new variant which removes `self' cpu from the vpset. It will be used in Hyper-V enlightened IPI code. Signed-off-by: Wei Liu <wei.liu@kernel.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20210910185714.299411-2-wei.liu@kernel.org |
||
Linus Torvalds
|
35776f1051 |
ARM development updates for 5.15:
- Rename "mod_init" and "mod_exit" so that initcall debug output is actually useful (Randy Dunlap) - Update maintainers entries for linux-arm-kernel to indicate it is moderated for non-subscribers (Randy Dunlap) - Move install rules to arch/arm/Makefile (Masahiro Yamada) - Drop unnecessary ARCH_NR_GPIOS definition (Linus Walleij) - Don't warn about atags_to_fdt() stack size (David Heidelberg) - Speed up unaligned copy_{from,to}_kernel_nofault (Arnd Bergmann) - Get rid of set_fs() usage (Arnd Bergmann) - Remove checks for GCC prior to v4.6 (Geert Uytterhoeven) -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuNNh8scc2k/wOAE+9OeQG+StrGQFAmE6GkAACgkQ9OeQG+St rGS7HhAAokcdC80ZOJJ+vT/J4sqpTdfTnJmImhkKOKgcw9yBFt7JBuA/6mp6/EV0 2Jd2RpeKG3S8PRlMWE4hGmyIla94r0olDvdh57+4AB/xrSfPO7l7EiaW2xLi0i3F KMysXxxKgbfckoNqPtiYF71cKkUKbZa169t8PyiiW5XYVQncnVGIbmEy69MJCg9n 08NUtkKoDgHkS6hXDVDLoFsGJX5P7X5IDPx6og233qBWRzWgcn1NURfJKD0F7/l+ UPnftUAF8JZp0rhtF2RH1IOu2v2MOVUsrK7D5OjzUEdMSleTN2oX3hmF4HPsG8eJ LeTKJfxoiX3JdWRlmUjomRU6eDqLAIMKsZ0wWoupQTaCq3WHs/mnxEOKY9n/UYGk eQdgb/EQQ5gDUok2WQOxG+Q85s29d14isQnoNa1D0O2YzTK7JiQ6YrASkZWVNLnT Zuw5vDtKk+7NV7QczTl9nHnPWIsRaZr40MXbTIROUO+aPoTxt6lPkv/dqUltrbEg 6Ix/8XsbtAgz8/UEDNz69RYA2DyzDBTO5VLdJutDsXliTAkY+HkqcORTFd72BvWX JEO/xg037a8x5vGpu/t0s+nmDgfy79Yi21u7i3MSjf2FiH09bOUhf7tiuhHVzb97 3po8S/YRiIsJWC1NpMpYFBYeCtJonMJycM05ff6MrLyvLYU2xbs= =Tx+y -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm Pull ARM development updates from Russell King: - Rename "mod_init" and "mod_exit" so that initcall debug output is actually useful (Randy Dunlap) - Update maintainers entries for linux-arm-kernel to indicate it is moderated for non-subscribers (Randy Dunlap) - Move install rules to arch/arm/Makefile (Masahiro Yamada) - Drop unnecessary ARCH_NR_GPIOS definition (Linus Walleij) - Don't warn about atags_to_fdt() stack size (David Heidelberg) - Speed up unaligned copy_{from,to}_kernel_nofault (Arnd Bergmann) - Get rid of set_fs() usage (Arnd Bergmann) - Remove checks for GCC prior to v4.6 (Geert Uytterhoeven) * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9118/1: div64: Remove always-true __div64_const32_is_OK() duplicate ARM: 9117/1: asm-generic: div64: Remove always-true __div64_const32_is_OK() ARM: 9116/1: unified: Remove check for gcc < 4 ARM: 9110/1: oabi-compat: fix oabi epoll sparse warning ARM: 9113/1: uaccess: remove set_fs() implementation ARM: 9112/1: uaccess: add __{get,put}_kernel_nofault ARM: 9111/1: oabi-compat: rework fcntl64() emulation ARM: 9114/1: oabi-compat: rework sys_semtimedop emulation ARM: 9108/1: oabi-compat: rework epoll_wait/epoll_pwait emulation ARM: 9107/1: syscall: always store thread_info->abi_syscall ARM: 9109/1: oabi-compat: add epoll_pwait handler ARM: 9106/1: traps: use get_kernel_nofault instead of set_fs() ARM: 9115/1: mm/maccess: fix unaligned copy_{from,to}_kernel_nofault ARM: 9105/1: atags_to_fdt: don't warn about stack size ARM: 9103/1: Drop ARCH_NR_GPIOS definition ARM: 9102/1: move theinstall rules to arch/arm/Makefile ARM: 9100/1: MAINTAINERS: mark all linux-arm-kernel@infradead list as moderated ARM: 9099/1: crypto: rename 'mod_init' & 'mod_exit' functions to be module-specific |
||
Linus Torvalds
|
2d338201d5 |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
"147 patches, based on
|
||
Weizhao Ouyang
|
395519b4b6 |
mm/early_ioremap.c: remove redundant early_ioremap_shutdown()
early_ioremap_reset() reserved a weak function so that architectures can provide a specific cleanup. Now no architectures use it, remove this redundant function. Link: https://lkml.kernel.org/r/20210901082917.399953-1-o451686892@gmail.com Signed-off-by: Weizhao Ouyang <o451686892@gmail.com> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Linus Torvalds
|
ac08b1c68d |
pci-v5.15-changes
-----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEEgMe7l+5h9hnxdsnuWYigwDrT+vwFAmE3jjYUHGJoZWxnYWFz QGdvb2dsZS5jb20ACgkQWYigwDrT+vwrIA/8DYHYRQ6tR3lY0ZxVeBdnd/ryp/ag z35N8RFLPaFlifLWSldwDV/8dylXnRjS57WS9sppp5gKsLl6xYySvTeMpt5QHdXd gJw27sBqiBmecUGFHWVp9B3yF2LvgrtItjd9RadYaHhWEfWyB5AFK7qwxx02fzvo hoGA2XbpI/Hb1BvSOi1avmPYgly1BRu8RFvKMwB2cxQNv3TZOnekT/iFK5WVR1o2 Z5BA+0nj9PrDO/axS0Vh+TqXhU+hOGox7bkOMcNmbDV7Yo8hgot5SsxddbZqJX+O BNNrRv72pbHGIwT/vOP7OQ49sRXledHYeyEGIixjLylBcROk9t8M1z1sfgJ6obVy 1eM3TIx/+7OS5dxC+gTNMVgUiL1NQIdA1LVIBb0BrXm6yNqNxBlj3o/gQ+VGEiNI 0lATmpe4P/N0/cOSI7tK9O2zsX3qzbLnJxsseGrwtK1L+GRYMUPhP4ciblhB0CIf BmK9j0ROmCBGN0Pz/5wIaQgkTro74dqO1BPX8n84M8KWByNZwTrJo/rCBdD4DGaJ eJvyt3hoYxhSxRQ1rp3zqZ9ytm4dJBGcZBKeO1IvKvJHEzfZBIqqq3M/hlNIaSDP v+8I9HaS1kI4SDB1Ia0LFRqKqvpN+WVLB+EoGkeDQozPO42tYSb43lYe83sEnZ+T KY0a/5feu975eLs= =g1WT -----END PGP SIGNATURE----- Merge tag 'pci-v5.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Enumeration: - Convert controller drivers to generic_handle_domain_irq() (Marc Zyngier) - Simplify VPD (Vital Product Data) access and search (Heiner Kallweit) - Update bnx2, bnx2x, bnxt, cxgb4, cxlflash, sfc, tg3 drivers to use simplified VPD interfaces (Heiner Kallweit) - Run Max Payload Size quirks before configuring MPS; work around ASMedia ASM1062 SATA MPS issue (Marek Behún) Resource management: - Refactor pci_ioremap_bar() and pci_ioremap_wc_bar() (Krzysztof Wilczyński) - Optimize pci_resource_len() to reduce kernel size (Zhen Lei) PCI device hotplug: - Fix a double unmap in ibmphp (Vishal Aslot) PCIe port driver: - Enable Bandwidth Notification only if port supports it (Stuart Hayes) Sysfs/proc/syscalls: - Add schedule point in proc_bus_pci_read() (Krzysztof Wilczyński) - Return ~0 data on pciconfig_read() CAP_SYS_ADMIN failure (Krzysztof Wilczyński) - Return "int" from pciconfig_read() syscall (Krzysztof Wilczyński) Virtualization: - Extend "pci=noats" to also turn on Translation Blocking to protect against some DMA attacks (Alex Williamson) - Add sysfs mechanism to control the type of reset used between device assignments to VMs (Amey Narkhede) - Add support for ACPI _RST reset method (Shanker Donthineni) - Add ACS quirks for Cavium multi-function devices (George Cherian) - Add ACS quirks for NXP LX2xx0 and LX2xx2 platforms (Wasim Khan) - Allow HiSilicon AMBA devices that appear as fake PCI devices to use PASID and SVA (Zhangfei Gao) Endpoint framework: - Add support for SR-IOV Endpoint devices (Kishon Vijay Abraham I) - Zero-initialize endpoint test tool parameters so we don't use random parameters (Shunyong Yang) APM X-Gene PCIe controller driver: - Remove redundant dev_err() call in xgene_msi_probe() (ErKun Yang) Broadcom iProc PCIe controller driver: - Don't fail devm_pci_alloc_host_bridge() on missing 'ranges' because it's optional on BCMA devices (Rob Herring) - Fix BCMA probe resource handling (Rob Herring) Cadence PCIe driver: - Work around J7200 Link training electrical issue by increasing delays in LTSSM (Nadeem Athani) Intel IXP4xx PCI controller driver: - Depend on ARCH_IXP4XX to avoid useless config questions (Geert Uytterhoeven) Intel Keembay PCIe controller driver: - Add Intel Keem Bay PCIe controller (Srikanth Thokala) Marvell Aardvark PCIe controller driver: - Work around config space completion handling issues (Evan Wang) - Increase timeout for config access completions (Pali Rohár) - Emulate CRS Software Visibility bit (Pali Rohár) - Configure resources from DT 'ranges' property to fix I/O space access (Pali Rohár) - Serialize INTx mask/unmask (Pali Rohár) MediaTek PCIe controller driver: - Add MT7629 support in DT (Chuanjia Liu) - Fix an MSI issue (Chuanjia Liu) - Get syscon regmap ("mediatek,generic-pciecfg"), IRQ number ("pci_irq"), PCI domain ("linux,pci-domain") from DT properties if present (Chuanjia Liu) Microsoft Hyper-V host bridge driver: - Add ARM64 support (Boqun Feng) - Support "Create Interrupt v3" message (Sunil Muthuswamy) NVIDIA Tegra PCIe controller driver: - Use seq_puts(), move err_msg from stack to static, fix OF node leak (Christophe JAILLET) NVIDIA Tegra194 PCIe driver: - Disable suspend when in Endpoint mode (Om Prakash Singh) - Fix MSI-X address programming error (Om Prakash Singh) - Disable interrupts during suspend to avoid spurious AER link down (Om Prakash Singh) Renesas R-Car PCIe controller driver: - Work around hardware issue that prevents Link L1->L0 transition (Marek Vasut) - Fix runtime PM refcount leak (Dinghao Liu) Rockchip DesignWare PCIe controller driver: - Add Rockchip RK356X host controller driver (Simon Xue) TI J721E PCIe driver: - Add support for J7200 and AM64 (Kishon Vijay Abraham I) Toshiba Visconti PCIe controller driver: - Add Toshiba Visconti PCIe host controller driver (Nobuhiro Iwamatsu) Xilinx NWL PCIe controller driver: - Enable PCIe reference clock via CCF (Hyun Kwon) Miscellaneous: - Convert sta2x11 from 'pci_' to 'dma_' API (Christophe JAILLET) - Fix pci_dev_str_match_path() alloc while atomic bug (used for kernel parameters that specify devices) (Dan Carpenter) - Remove pointless Precision Time Management warning when PTM is present but not enabled (Jakub Kicinski) - Remove surplus "break" statements (Krzysztof Wilczyński)" * tag 'pci-v5.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (132 commits) PCI: ibmphp: Fix double unmap of io_mem x86/PCI: sta2x11: switch from 'pci_' to 'dma_' API PCI/VPD: Use unaligned access helpers PCI/VPD: Clean up public VPD defines and inline functions cxgb4: Use pci_vpd_find_id_string() to find VPD ID string PCI/VPD: Add pci_vpd_find_id_string() PCI/VPD: Include post-processing in pci_vpd_find_tag() PCI/VPD: Stop exporting pci_vpd_find_info_keyword() PCI/VPD: Stop exporting pci_vpd_find_tag() PCI: Set dma-can-stall for HiSilicon chips PCI: rockchip-dwc: Add Rockchip RK356X host controller driver PCI: dwc: Remove surplus break statement after return PCI: artpec6: Remove local code block from switch statement PCI: artpec6: Remove surplus break statement after return MAINTAINERS: Add entries for Toshiba Visconti PCIe controller PCI: visconti: Add Toshiba Visconti PCIe host controller driver PCI/portdrv: Enable Bandwidth Notification only if port supports it PCI: Allow PASID on fake PCIe devices without TLP prefixes PCI: mediatek: Use PCI domain to handle ports detection PCI: mediatek: Add new method to get irq number ... |
||
Linus Torvalds
|
df43d90382 |
printk changes for 5.15
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEESH4wyp42V4tXvYsjUqAMR0iAlPIFAmEt+hwACgkQUqAMR0iA lPLppBAAiyrUNVmqqtdww+IJajEs1uD/4FqPsysHRwroHBFymJeQG1XCwUpDZ7jj 6gXT0chxyjQE18gT/W9nf+PSmA9XvIVA1WSR+WCECTNW3YoZXqtgwiHfgnitXYku HlmoZLthYeuoXWw2wn+hVLfTRh6VcPHYEaC21jXrs6B1pOXHbvjJ5eTLHlX9oCfL UKSK+jFTHAJcn/GskRzviBe0Hpe8fqnkRol2XX13ltxqtQ73MjaGNu7imEH6/Pa7 /MHXWtuWJtOvuYz17aztQP4Qwh1xy+kakMy3aHucdlxRBTP4PTzzTuQI3L/RYi6l +ttD7OHdRwqFAauBLY3bq3uJjYb5v/64ofd8DNnT2CJvtznY8wrPbTdFoSdPcL2Q 69/opRWHcUwbU/Gt4WLtyQf3Mk0vepgMbbVg1B5SSy55atRZaXMrA2QJ/JeawZTB KK6D/mE7ccze/YFzsySunCUVKCm0veoNxEAcakCCZKXSbsvd1MYcIRC0e+2cv6e5 2NEH7gL4dD+5tqu5nzvIuKDn3NrDQpbi28iUBoFbkxRgcVyvHJ9AGSa62wtb5h3D OgkqQMdVKBbjYNeUodPlQPzmXZDasytavyd0/BC/KENOcBvU/8gW++2UZTfsh/1A dLjgwFBdyJncQcCS9Abn20/EKntbIMEX8NLa97XWkA3fuzMKtak= =yEVq -----END PGP SIGNATURE----- Merge tag 'printk-for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux Pull printk updates from Petr Mladek: - Optionally, provide an index of possible printk messages via <debugfs>/printk/index/. It can be used when monitoring important kernel messages on a farm of various hosts. The monitor has to be updated when some messages has changed or are not longer available by a newly deployed kernel. - Add printk.console_no_auto_verbose boot parameter. It allows to generate crash dump even with slow consoles in a reasonable time frame. - Remove printk_safe buffers. The messages are always stored directly to the main logbuffer, even in NMI or recursive context. Also it allows to serialize syslog operations by a mutex instead of a spin lock. - Misc clean up and build fixes. * tag 'printk-for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: printk/index: Fix -Wunused-function warning lib/nmi_backtrace: Serialize even messages about idle CPUs printk: Add printk.console_no_auto_verbose boot parameter printk: Remove console_silent() lib/test_scanf: Handle n_bits == 0 in random tests printk: syslog: close window between wait and read printk: convert @syslog_lock to mutex printk: remove NMI tracking printk: remove safe buffers printk: track/limit recursion lib/nmi_backtrace: explicitly serialize banner and regs printk: Move the printk() kerneldoc comment to its new home printk/index: Fix warning about missing prototypes MIPS/asm/printk: Fix build failure caused by printk printk: index: Add indexing support to dev_printk printk: Userspace format indexing support printk: Rework parse_prefix into printk_parse_prefix printk: Straighten out log_flags into printk_info_flags string_helpers: Escape double quotes in escape_special printk/console: Check consistent sequence number when handling race in console_unlock() |
||
Linus Torvalds
|
c07f191907 |
hyperv-next for 5.15
-----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEIbPD0id6easf0xsudhRwX5BBoF4FAmEuJwwTHHdlaS5saXVA a2VybmVsLm9yZwAKCRB2FHBfkEGgXp0ICACsx9NtQh1f9xGMClYrbobJfGmiwHVV uKut/44Vg39tSyZB4mQt3A8YcaQj1Nibo6HVmxJtbKbrKwlTGAiQh5fiOmBOd7Re /rII/S+CGtAyChI1adHTSL2xdk6WY0c7XQw+IPaERBikG5rO81Y6NLjFZNOv494k JnG9uGGjAcJWFYylPcLxt4sR/hEfE4KDzsWjWOb5azYgo/RwOan6zYDdkUgocp4A J+zmgCiME8LLmEV19gn7p4gpX7X9m5mcNgn53eICYPhrBqI0PTWocm6DepCEnrQ+ pEobIagWIMx5Dr7euEJwLxFSN7bdzleVOa4FSfM0zUsEjdbiPH47VQFM =Vae6 -----END PGP SIGNATURE----- Merge tag 'hyperv-next-signed-20210831' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv updates from Wei Liu: - make Hyper-V code arch-agnostic (Michael Kelley) - fix sched_clock behaviour on Hyper-V (Ani Sinha) - fix a fault when Linux runs as the root partition on MSHV (Praveen Kumar) - fix VSS driver (Vitaly Kuznetsov) - cleanup (Sonia Sharma) * tag 'hyperv-next-signed-20210831' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: hv_utils: Set the maximum packet size for VSS driver to the length of the receive buffer Drivers: hv: Enable Hyper-V code to be built on ARM64 arm64: efi: Export screen_info arm64: hyperv: Initialize hypervisor on boot arm64: hyperv: Add panic handler arm64: hyperv: Add Hyper-V hypercall and register access utilities x86/hyperv: fix root partition faults when writing to VP assist page MSR hv: hyperv.h: Remove unused inline functions drivers: hv: Decouple Hyper-V clock/timer code from VMbus drivers x86/hyperv: add comment describing TSC_INVARIANT_CONTROL MSR setting bit 0 Drivers: hv: Move Hyper-V misc functionality to arch-neutral code Drivers: hv: Add arch independent default functions for some Hyper-V handlers Drivers: hv: Make portions of Hyper-V init code be arch neutral x86/hyperv: fix for unwanted manipulation of sched_clock when TSC marked unstable asm-generic/hyperv: Add missing #include of nmi.h |
||
Linus Torvalds
|
4cdc4cc2ad |
asm-generic changes for 5.15
The main content for 5.15 is a series that cleans up the handling of strncpy_from_user() and strnlen_user(), removing a lot of slightly incorrect versions of these in favor of the lib/strn*.c helpers that implement these correctly and more efficiently. The only architectures that retain a private version now are mips, ia64, um and parisc. I had offered to convert those at all, but Thomas Bogendoerfer wanted to keep the mips version for the moment until he had a chance to do regression testing. The branch also contains two patches for bitops and for ffs(). Signed-off-by: Arnd Bergmann <arnd@arndb.de> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUAYS82fGCrR//JCVInAQL9AxAAruOge7r8vzXQC8ehR4iw4/pCyzsLWdjh bLvTCovhD6y1KXb0cU3qMI2SUESwy/w9YteyLs4Edh5Yhm9uWIXz2WO6zTNDuW1g eNd6lcmoOLOXFxCUX3TZqvnxaEEiedjEJjOTicTBRv8c79Kw+2DTFYEwi8MIWlbx gGdGLOJ2SORl6HeE+wn8bfMPCChisMod75koi+Vnp3kp9+aw8VIi0RVMjtZ4HI3v z9H0DD0jDAy1eaXnC2+dsaIyrAq8/Lo/pqVBvUJRoBFaV/FHvNH2M0yl15yJYx1V 1KNJlBhoedc0PiMO9OnsRS1GMq1kEeo+u9gJPqphZQWooAQotD5C0sXsPnsghGo0 IrsVANy4H0k2h0AazRZd3KwV03aJ6FWHz3qyvbglLAQjKU1MgZTgroF5Q6R2FMtV /VtswpGB707+oGtmFvHc1lVgRYZTfduGT1jjBgwUuTUmLhI3/yRIlnodd6dXneX6 FOK3WbxlhUuIaSZLObLved/yNBgoOajP3vHIUc4c9HrsPEvkjKPB1g/VpbqqWVXe vF5/MeUN+b3Rq+h1GnnZQmhiOPIydZmK3qK7zYzp5Da+Ke4I2zWv/Et0/eFSZmh8 rS/cNMLshSOKMbaPvdopUnWhLspUh82wWDNjDFJx2XNlStVpFkMikKtSY4TrtbV+ zzHxZpLyQxc= =NB0a -----END PGP SIGNATURE----- Merge tag 'asm-generic-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic updates from Arnd Bergmann: "The main content for 5.15 is a series that cleans up the handling of strncpy_from_user() and strnlen_user(), removing a lot of slightly incorrect versions of these in favor of the lib/strn*.c helpers that implement these correctly and more efficiently. The only architectures that retain a private version now are mips, ia64, um and parisc. I had offered to convert those at all, but Thomas Bogendoerfer wanted to keep the mips version for the moment until he had a chance to do regression testing. The branch also contains two patches for bitops and for ffs()" * tag 'asm-generic-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: bitops/non-atomic: make @nr unsigned to avoid any DIV asm-generic: ffs: Drop bogus reference to ffz location asm-generic: reverse GENERIC_{STRNCPY_FROM,STRNLEN}_USER symbols asm-generic: remove extra strn{cpy_from,len}_user declarations asm-generic: uaccess: remove inline strncpy_from_user/strnlen_user s390: use generic strncpy/strnlen from_user microblaze: use generic strncpy/strnlen from_user csky: use generic strncpy/strnlen from_user arc: use generic strncpy/strnlen from_user hexagon: use generic strncpy/strnlen from_user h8300: remove stale strncpy_from_user asm-generic/uaccess.h: remove __strncpy_from_user/__strnlen_user |
||
Linus Torvalds
|
9e9fb7655e |
Core:
- Enable memcg accounting for various networking objects. BPF: - Introduce bpf timers. - Add perf link and opaque bpf_cookie which the program can read out again, to be used in libbpf-based USDT library. - Add bpf_task_pt_regs() helper to access user space pt_regs in kprobes, to help user space stack unwinding. - Add support for UNIX sockets for BPF sockmap. - Extend BPF iterator support for UNIX domain sockets. - Allow BPF TCP congestion control progs and bpf iterators to call bpf_setsockopt(), e.g. to switch to another congestion control algorithm. Protocols: - Support IOAM Pre-allocated Trace with IPv6. - Support Management Component Transport Protocol. - bridge: multicast: add vlan support. - netfilter: add hooks for the SRv6 lightweight tunnel driver. - tcp: - enable mid-stream window clamping (by user space or BPF) - allow data-less, empty-cookie SYN with TFO_SERVER_COOKIE_NOT_REQD - more accurate DSACK processing for RACK-TLP - mptcp: - add full mesh path manager option - add partial support for MP_FAIL - improve use of backup subflows - optimize option processing - af_unix: add OOB notification support. - ipv6: add IFLA_INET6_RA_MTU to expose MTU value advertised by the router. - mac80211: Target Wake Time support in AP mode. - can: j1939: extend UAPI to notify about RX status. Driver APIs: - Add page frag support in page pool API. - Many improvements to the DSA (distributed switch) APIs. - ethtool: extend IRQ coalesce uAPI with timer reset modes. - devlink: control which auxiliary devices are created. - Support CAN PHYs via the generic PHY subsystem. - Proper cross-chip support for tag_8021q. - Allow TX forwarding for the software bridge data path to be offloaded to capable devices. Drivers: - veth: more flexible channels number configuration. - openvswitch: introduce per-cpu upcall dispatch. - Add internet mix (IMIX) mode to pktgen. - Transparently handle XDP operations in the bonding driver. - Add LiteETH network driver. - Renesas (ravb): - support Gigabit Ethernet IP - NXP Ethernet switch (sja1105) - fast aging support - support for "H" switch topologies - traffic termination for ports under VLAN-aware bridge - Intel 1G Ethernet - support getcrosststamp() with PCIe PTM (Precision Time Measurement) for better time sync - support Credit-Based Shaper (CBS) offload, enabling HW traffic prioritization and bandwidth reservation - Broadcom Ethernet (bnxt) - support pulse-per-second output - support larger Rx rings - Mellanox Ethernet (mlx5) - support ethtool RSS contexts and MQPRIO channel mode - support LAG offload with bridging - support devlink rate limit API - support packet sampling on tunnels - Huawei Ethernet (hns3): - basic devlink support - add extended IRQ coalescing support - report extended link state - Netronome Ethernet (nfp): - add conntrack offload support - Broadcom WiFi (brcmfmac): - add WPA3 Personal with FT to supported cipher suites - support 43752 SDIO device - Intel WiFi (iwlwifi): - support scanning hidden 6GHz networks - support for a new hardware family (Bz) - Xen pv driver: - harden netfront against malicious backends - Qualcomm mobile - ipa: refactor power management and enable automatic suspend - mhi: move MBIM to WWAN subsystem interfaces Refactor: - Ambient BPF run context and cgroup storage cleanup. - Compat rework for ndo_ioctl. Old code removal: - prism54 remove the obsoleted driver, deprecated by the p54 driver. - wan: remove sbni/granch driver. Signed-off-by: Jakub Kicinski <kuba@kernel.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmEukBYACgkQMUZtbf5S IrsyHA//TO8dw18NYts4n9LmlJT2naJ7yBUUSSXK/M+DtW0MQ9nnHhqzPm5uJdRl IgQTNJrW3dYzRwgqaWZqEwO1t5/FI+f87ND1Nsekg7x9tF66a6ov5WxU26TwwSba U+si/inQ/4chuQ+LxMQobqCDxaLE46I2dIoRl+YfndJ24DRzYSwAEYIPPbSdfyU+ +/l+3s4GaxO4k/hLciPAiOniyxLoUNiGUTNh+2yqRBXelSRJRKVnl+V22ANFrxRW nTEiplfVKhlPU1e4iLuRtaxDDiePHhw9I3j/lMHhfeFU2P/gKJIvz4QpGV0CAZg2 1VvDU32WEx1GQLXJbKm0KwoNRUq1QSjOyyFti+BO7ugGaYAR4gKhShOqlSYLzUtB tbtzQhSNLWOGqgmSJOztZb5kFDm2EdRSll5/lP2uyFlPkIsIp0QbscJVzNTnS74b Xz15ZOw41Z4TfWPEMWgfrx6Zkm7pPWkly+7WfUkPcHa1gftNz6tzXXxSXcXIBPdi yQ5JCzzxrM5573YHuk5YedwZpn6PiAt4A/muFGk9C6aXP60TQAOS/ppaUzZdnk4D NfOk9mj06WEULjYjPcKEuT3GGWE6kmjb8Pu0QZWKOchv7vr6oZly1EkVZqYlXELP AfhcrFeuufie8mqm0jdb4LnYaAnqyLzlb1J4Zxh9F+/IX7G3yoc= =JDGD -----END PGP SIGNATURE----- Merge tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Enable memcg accounting for various networking objects. BPF: - Introduce bpf timers. - Add perf link and opaque bpf_cookie which the program can read out again, to be used in libbpf-based USDT library. - Add bpf_task_pt_regs() helper to access user space pt_regs in kprobes, to help user space stack unwinding. - Add support for UNIX sockets for BPF sockmap. - Extend BPF iterator support for UNIX domain sockets. - Allow BPF TCP congestion control progs and bpf iterators to call bpf_setsockopt(), e.g. to switch to another congestion control algorithm. Protocols: - Support IOAM Pre-allocated Trace with IPv6. - Support Management Component Transport Protocol. - bridge: multicast: add vlan support. - netfilter: add hooks for the SRv6 lightweight tunnel driver. - tcp: - enable mid-stream window clamping (by user space or BPF) - allow data-less, empty-cookie SYN with TFO_SERVER_COOKIE_NOT_REQD - more accurate DSACK processing for RACK-TLP - mptcp: - add full mesh path manager option - add partial support for MP_FAIL - improve use of backup subflows - optimize option processing - af_unix: add OOB notification support. - ipv6: add IFLA_INET6_RA_MTU to expose MTU value advertised by the router. - mac80211: Target Wake Time support in AP mode. - can: j1939: extend UAPI to notify about RX status. Driver APIs: - Add page frag support in page pool API. - Many improvements to the DSA (distributed switch) APIs. - ethtool: extend IRQ coalesce uAPI with timer reset modes. - devlink: control which auxiliary devices are created. - Support CAN PHYs via the generic PHY subsystem. - Proper cross-chip support for tag_8021q. - Allow TX forwarding for the software bridge data path to be offloaded to capable devices. Drivers: - veth: more flexible channels number configuration. - openvswitch: introduce per-cpu upcall dispatch. - Add internet mix (IMIX) mode to pktgen. - Transparently handle XDP operations in the bonding driver. - Add LiteETH network driver. - Renesas (ravb): - support Gigabit Ethernet IP - NXP Ethernet switch (sja1105): - fast aging support - support for "H" switch topologies - traffic termination for ports under VLAN-aware bridge - Intel 1G Ethernet - support getcrosststamp() with PCIe PTM (Precision Time Measurement) for better time sync - support Credit-Based Shaper (CBS) offload, enabling HW traffic prioritization and bandwidth reservation - Broadcom Ethernet (bnxt) - support pulse-per-second output - support larger Rx rings - Mellanox Ethernet (mlx5) - support ethtool RSS contexts and MQPRIO channel mode - support LAG offload with bridging - support devlink rate limit API - support packet sampling on tunnels - Huawei Ethernet (hns3): - basic devlink support - add extended IRQ coalescing support - report extended link state - Netronome Ethernet (nfp): - add conntrack offload support - Broadcom WiFi (brcmfmac): - add WPA3 Personal with FT to supported cipher suites - support 43752 SDIO device - Intel WiFi (iwlwifi): - support scanning hidden 6GHz networks - support for a new hardware family (Bz) - Xen pv driver: - harden netfront against malicious backends - Qualcomm mobile - ipa: refactor power management and enable automatic suspend - mhi: move MBIM to WWAN subsystem interfaces Refactor: - Ambient BPF run context and cgroup storage cleanup. - Compat rework for ndo_ioctl. Old code removal: - prism54 remove the obsoleted driver, deprecated by the p54 driver. - wan: remove sbni/granch driver" * tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1715 commits) net: Add depends on OF_NET for LiteX's LiteETH ipv6: seg6: remove duplicated include net: hns3: remove unnecessary spaces net: hns3: add some required spaces net: hns3: clean up a type mismatch warning net: hns3: refine function hns3_set_default_feature() ipv6: remove duplicated 'net/lwtunnel.h' include net: w5100: check return value after calling platform_get_resource() net/mlxbf_gige: Make use of devm_platform_ioremap_resourcexxx() net: mdio: mscc-miim: Make use of the helper function devm_platform_ioremap_resource() net: mdio-ipq4019: Make use of devm_platform_ioremap_resource() fou: remove sparse errors ipv4: fix endianness issue in inet_rtm_getroute_build_skb() octeontx2-af: Set proper errorcode for IPv4 checksum errors octeontx2-af: Fix static code analyzer reported issues octeontx2-af: Fix mailbox errors in nix_rss_flowkey_cfg octeontx2-af: Fix loop in free and unmap counter af_unix: fix potential NULL deref in unix_dgram_connect() dpaa2-eth: Replace strlcpy with strscpy octeontx2-af: Use NDC TX for transmit packet data ... |
||
Jonathan Cameron
|
1901f8c9ca |
PCI: Correct the pci_iomap.h header guard #endif comment
Update the include/asm-generic/pci_iomap.h header guard #endif comment to match the corresponding #ifndef. Link: https://lore.kernel.org/r/20210803123014.2963814-1-Jonathan.Cameron@huawei.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> |
||
Geert Uytterhoeven
|
c747ce4706 |
ARM: 9117/1: asm-generic: div64: Remove always-true __div64_const32_is_OK()
Since commit
|
||
Ingo Molnar
|
c87866ede4 |
Linux 5.14-rc6
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmEZpgUeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGhf8H/0RTjPIqTkHU4chH QDMbFGzW3AtUhll6UQXKtkU/WoaIV673PUfqBepn9kSYpB4U3gV69foh/yiRhR9K YgnVb8uO8xMVKSUi2GUjD4hc1Yyey7+S8a+uzTFtyfVv3p7j2+HKJ/sYz3jKshdC 2QajP2YuAD4l86yMs3+Oxy92gwFJnVqw596YsvDk4pq0bIV9XZy/AyTw0I3ipPvl UMCUTMRTv2rX8YHS+nadWrmZlPCKcWeBxIzfbayl51Z1jkIx95QPic2bkDqXJDRS SPij10Nkugr4OpSF4H2KUVOo7IdKzCbH4/Fsk786xxSoiRHcZcX6Ja9l2NcL2rW0 eSNmDb4= =gwko -----END PGP SIGNATURE----- Merge tag 'v5.14-rc6' into locking/core, to pick up fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
Vineet Gupta
|
8f76f9c469 |
bitops/non-atomic: make @nr unsigned to avoid any DIV
signed math causes generation of costlier instructions such as DIV when they could be done by barrerl shifter. Worse part is this is not caught by things like bloat-o-meter since instruction length / symbols are typically same size. e.g. stock (signed math) __________________ 919b4614 <test_taint>: 919b4614: div r2,r0,0x20 ^^^ 919b4618: add2 r2,0x920f6050,r2 919b4620: ld_s r2,[r2,0] 919b4622: lsr r0,r2,r0 919b4626: j_s.d [blink] 919b4628: bmsk_s r0,r0,0 919b462a: nop_s (patched) unsigned math __________________ 919b4614 <test_taint>: 919b4614: lsr r2,r0,0x5 @nr/32 ^^^ 919b4618: add2 r2,0x920f6050,r2 919b4620: ld_s r2,[r2,0] 919b4622: lsr r0,r2,r0 #test_bit() 919b4626: j_s.d [blink] 919b4628: bmsk_s r0,r0,0 919b462a: nop_s Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Will Deacon <will@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
Jakub Kicinski
|
f4083a752a |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Conflicts: drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h |
||
Arnd Bergmann
|
a71bfc0079
|
Merge branch 'asm-generic-uaccess-7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic into asm-generic
These two functions appear to be unnecessarily different between architectures, and the asm-generic version is a bit questionable, even for NOMMU architectures. Clean this up to just use the generic library version for anything that uses the generic version today. I've expanded on the patch descriptions a little, as suggested by Christoph Hellwig, but I suspect a more detailed review would uncover additional problems with the custom versions that are getting removed. I ended up adding patches for csky and microblaze as they had the same implementation that I removed elsewhere, these are now gone as well. * 'asm-generic-uaccess-7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: asm-generic: reverse GENERIC_{STRNCPY_FROM,STRNLEN}_USER symbols asm-generic: remove extra strn{cpy_from,len}_user declarations asm-generic: uaccess: remove inline strncpy_from_user/strnlen_user s390: use generic strncpy/strnlen from_user microblaze: use generic strncpy/strnlen from_user csky: use generic strncpy/strnlen from_user arc: use generic strncpy/strnlen from_user hexagon: use generic strncpy/strnlen from_user h8300: remove stale strncpy_from_user asm-generic/uaccess.h: remove __strncpy_from_user/__strnlen_user Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
Nathan Chancellor
|
848378812e |
vmlinux.lds.h: Handle clang's module.{c,d}tor sections
A recent change in LLVM causes module_{c,d}tor sections to appear when
CONFIG_K{A,C}SAN are enabled, which results in orphan section warnings
because these are not handled anywhere:
ld.lld: warning: arch/x86/pci/built-in.a(legacy.o):(.text.asan.module_ctor) is being placed in '.text.asan.module_ctor'
ld.lld: warning: arch/x86/pci/built-in.a(legacy.o):(.text.asan.module_dtor) is being placed in '.text.asan.module_dtor'
ld.lld: warning: arch/x86/pci/built-in.a(legacy.o):(.text.tsan.module_ctor) is being placed in '.text.tsan.module_ctor'
Fangrui explains: "the function asan.module_ctor has the SHF_GNU_RETAIN
flag, so it is in a separate section even with -fno-function-sections
(default)".
Place them in the TEXT_TEXT section so that these technologies continue
to work with the newer compiler versions. All of the KASAN and KCSAN
KUnit tests continue to pass after this change.
Cc: stable@vger.kernel.org
Link: https://github.com/ClangBuiltLinux/linux/issues/1432
Link:
|
||
Geert Uytterhoeven
|
fc062ad8e4
|
asm-generic: ffs: Drop bogus reference to ffz location
The generic definition of ffz() is not defined in the same header files as the generic definitions of ffs(). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
Mark Rutland
|
9248e52fec |
locking/atomic: simplify non-atomic wrappers
Since the non-atomic arch_*() bitops use plain accesses, they are implicitly instrumnted by the compiler, and we work around this in the instrumented wrappers to avoid double instrumentation. It's simpler to avoid the wrappers entirely, and use the preprocessor to alias the arch_*() bitops to their regular versions, removing the need for checks in the instrumented wrappers. Suggested-by: Marco Elver <elver@google.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Marco Elver <elver@google.com> Link: https://lore.kernel.org/r/20210721155813.17082-1-mark.rutland@arm.com |
||
Arnd Bergmann
|
98b861a304 |
asm-generic: uaccess: remove inline strncpy_from_user/strnlen_user
The inline version is used on three NOMMU architectures and is particularly inefficient when it scans the string one byte at a time twice. It also lacks a check for user_addr_max(), but this is probably ok on NOMMU targets. Consolidate the asm-generic implementation with the library version that is used everywhere else. This version is generalized enough to work efficiently on both MMU and NOMMU targets, and using the same code everywhere reduces the potential for subtle bugs. Mark the prototypes as __must_check in the process. Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
Arnd Bergmann
|
1a33b18b3b |
compat: make linux/compat.h available everywhere
Parts of linux/compat.h are under an #ifdef, but we end up using more of those over time, moving things around bit by bit. To get it over with once and for all, make all of this file uncondititonal now so it can be accessed everywhere. There are only a few types left that are in asm/compat.h but not yet in the asm-generic version, so add those in the process. This requires providing a few more types in asm-generic/compat.h that were not already there. The only tricky one is compat_sigset_t, which needs a little help on 32-bit architectures and for x86. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
Arnd Bergmann
|
f27180dd63 |
asm-generic/uaccess.h: remove __strncpy_from_user/__strnlen_user
This is a preparation for changing over architectures to the generic implementation one at a time. As there are no callers of either __strncpy_from_user() or __strnlen_user(), fold these into the strncpy_from_user() and strnlen_user() functions to make each implementation independent of the others. Many of these implementations have known bugs, but the intention here is to not change behavior at all and stay compatible with those bugs for the moment. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
Chris Down
|
3370155737 |
printk: Userspace format indexing support
We have a number of systems industry-wide that have a subset of their functionality that works as follows: 1. Receive a message from local kmsg, serial console, or netconsole; 2. Apply a set of rules to classify the message; 3. Do something based on this classification (like scheduling a remediation for the machine), rinse, and repeat. As a couple of examples of places we have this implemented just inside Facebook, although this isn't a Facebook-specific problem, we have this inside our netconsole processing (for alarm classification), and as part of our machine health checking. We use these messages to determine fairly important metrics around production health, and it's important that we get them right. While for some kinds of issues we have counters, tracepoints, or metrics with a stable interface which can reliably indicate the issue, in order to react to production issues quickly we need to work with the interface which most kernel developers naturally use when developing: printk. Most production issues come from unexpected phenomena, and as such usually the code in question doesn't have easily usable tracepoints or other counters available for the specific problem being mitigated. We have a number of lines of monitoring defence against problems in production (host metrics, process metrics, service metrics, etc), and where it's not feasible to reliably monitor at another level, this kind of pragmatic netconsole monitoring is essential. As one would expect, monitoring using printk is rather brittle for a number of reasons -- most notably that the message might disappear entirely in a new version of the kernel, or that the message may change in some way that the regex or other classification methods start to silently fail. One factor that makes this even harder is that, under normal operation, many of these messages are never expected to be hit. For example, there may be a rare hardware bug which one wants to detect if it was to ever happen again, but its recurrence is not likely or anticipated. This precludes using something like checking whether the printk in question was printed somewhere fleetwide recently to determine whether the message in question is still present or not, since we don't anticipate that it should be printed anywhere, but still need to monitor for its future presence in the long-term. This class of issue has happened on a number of occasions, causing unhealthy machines with hardware issues to remain in production for longer than ideal. As a recent example, some monitoring around blk_update_request fell out of date and caused semi-broken machines to remain in production for longer than would be desirable. Searching through the codebase to find the message is also extremely fragile, because many of the messages are further constructed beyond their callsite (eg. btrfs_printk and other module-specific wrappers, each with their own functionality). Even if they aren't, guessing the format and formulation of the underlying message based on the aesthetics of the message emitted is not a recipe for success at scale, and our previous issues with fleetwide machine health checking demonstrate as much. This provides a solution to the issue of silently changed or deleted printks: we record pointers to all printk format strings known at compile time into a new .printk_index section, both in vmlinux and modules. At runtime, this can then be iterated by looking at <debugfs>/printk/index/<module>, which emits the following format, both readable by humans and able to be parsed by machines: $ head -1 vmlinux; shuf -n 5 vmlinux # <level[,flags]> filename:line function "format" <5> block/blk-settings.c:661 disk_stack_limits "%s: Warning: Device %s is misaligned\n" <4> kernel/trace/trace.c:8296 trace_create_file "Could not create tracefs '%s' entry\n" <6> arch/x86/kernel/hpet.c:144 _hpet_print_config "hpet: %s(%d):\n" <6> init/do_mounts.c:605 prepare_namespace "Waiting for root device %s...\n" <6> drivers/acpi/osl.c:1410 acpi_no_auto_serialize_setup "ACPI: auto-serialization disabled\n" This mitigates the majority of cases where we have a highly-specific printk which we want to match on, as we can now enumerate and check whether the format changed or the printk callsite disappeared entirely in userspace. This allows us to catch changes to printks we monitor earlier and decide what to do about it before it becomes problematic. There is no additional runtime cost for printk callers or printk itself, and the assembly generated is exactly the same. Signed-off-by: Chris Down <chris@chrisdown.name> Cc: Petr Mladek <pmladek@suse.com> Cc: Jessica Yu <jeyu@kernel.org> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kees Cook <keescook@chromium.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Petr Mladek <pmladek@suse.com> Reported-by: kernel test robot <lkp@intel.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Jessica Yu <jeyu@kernel.org> # for module.{c,h} Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/e42070983637ac5e384f17fbdbe86d19c7b212a5.1623775748.git.chris@chrisdown.name |
||
Michael Kelley
|
31e5e64694 |
drivers: hv: Decouple Hyper-V clock/timer code from VMbus drivers
Hyper-V clock/timer code in hyperv_timer.c is mostly independent from other VMbus drivers, but building for ARM64 without hyperv_timer.c shows some remaining entanglements. A default implementation of hv_read_reference_counter can just read a Hyper-V synthetic register and be independent of hyperv_timer.c, so move this code out and into hv_common.c. Then it can be used by the timesync driver even if hyperv_timer.c isn't built on a particular architecture. If hyperv_timer.c *is* built, it can override with a faster implementation. Also provide stubs for stimer functions called by the VMbus driver when hyperv_timer.c isn't built. No functional changes. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1626220906-22629-1-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Mark Rutland
|
cf3ee3c8c2 |
locking/atomic: add generic arch_*() bitops
Now that all architectures provide arch_atomic_long_*(), we can implement the generic bitops atop these rather than atop atomic_long_*(), and provide arch_*() forms of the bitops that are safe to use in noinstr code. Now that all architectures provide arch_atomic_long_*(), we can build the generic arch_*() bitops atop these, which can be safely used in noinstr code. The regular bitop wrappers are built atop these. As the generic non-atomic bitops use plain accesses, these will be implicitly instrumented unless they are inlined into noinstr functions (which is similar to arch_atomic*_read() when based on READ_ONCE()). The wrappers are modified so that where the underlying arch_*() function uses a plain access, no explicit instrumentation is added, as this is redundant and could result in confusing reports. Since function prototypes get excessively long with both an `arch_` prefix and `__always_inline` attribute, the return type and function attributes have been split onto a separate line, matching the style of the generated atomic headers. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210713105253.7615-6-mark.rutland@arm.com |
||
Mark Rutland
|
e3d18cee25 |
locking/atomic: centralize generated headers
The generated atomic headers are only intended to be included directly by <linux/atomic.h>, but are spread across include/linux/ and include/asm-generic/, where people mnay be encouraged to include them. This patch centralizes them under include/linux/atomic/. Other than the header guards and hashes, there is no change to any of the generated headers as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210713105253.7615-4-mark.rutland@arm.com |
||
Michael Kelley
|
afca4d95dd |
Drivers: hv: Make portions of Hyper-V init code be arch neutral
The code to allocate and initialize the hv_vp_index array is architecture neutral. Similarly, the code to allocate and populate the hypercall input and output arg pages is architecture neutral. Move both sets of code out from arch/x86 and into utility functions in drivers/hv/hv_common.c that can be shared by Hyper-V initialization on ARM64. No functional changes. However, the allocation of the hypercall input and output arg pages is done differently so that the size is always the Hyper-V page size, even if not the same as the guest page size (such as with ARM64's 64K page size). Signed-off-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1626287687-2045-2-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Michael Kelley
|
ba3f5839fb |
asm-generic/hyperv: Add missing #include of nmi.h
The recent move of hv_do_rep_hypercall() to this file adds a reference to touch_nmi_watchdog(). Its function definition is included indirectly when compiled on x86, but not when compiled on ARM64. So add the explicit #include. No functional change. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1626058204-2106-1-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Linus Torvalds
|
dcf3c935dd |
This pull request contains the following changes for UML:
- Support for optimized routines based on the host CPU - Support for PCI via virtio - Various fixes -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEdgfidid8lnn52cLTZvlZhesYu8EFAmDnZwAWHHJpY2hhcmRA c2lnbWEtc3Rhci5hdAAKCRBm+VmF6xi7wW1BD/9SHWGYhxLY+xL27eO0Q8XOPePb diqllGavzq3fcakmJ3+6iIpb/WYX0ztu1M4KMBRP3QxNjP6nFkS1ph3PC0LL3ec2 h23hRfOrhlQd4rdonPcq/Z7oXKhrkem9G6KneVfvB94HmXnaZIrNBjwQRy0uRMXE /IVNH4o6YMR8Av/VrG+L6BS+O/oXVnYVSLOuXsIrxmxS24NybsOpRzHvl14ZUsHt eiwzcRC3ugAaxJn8cOSrHdBwvdOgbFFWEtMITcesQpYru+EmQcsCZdmJ0DbwsV2e 9k+LrVoy0CZFoekBtaaFvZq+JVBjUZKoAUYBML4ejWnQKolJH0BZQRh4RT0rbTjc UMiuE3kFUsdJjzJRyO4pcqpwaNhCiZ2XrwyKeev/FLIn95bD1xbLJWfRvoKhioiI X+1vujN2+N5n8T+u8sCVohujJCkUkMjevfF6ew8rvYOj3FrGqTi4jgrXUFAIsjLa mHdA92oHIjNOCjyVIqnoUFTDltVMW9CwnLtd5nPnGvJoMtsj7lthy6fdtdPH0WVu iNR4toE/AjBJo4rtib/irYbZtqmw2AbBFqoRk4yj8Fw4ZdSPYELwAR1aah0Oce9R t1T9OE66vlr28XIC0NF917JfSNkc2eXnx4B21Zh+a/68XSJ1FzXPTob3lvXVVhQR Ou4aw6dH7mql/2bq1w== =wAww -----END PGP SIGNATURE----- Merge tag 'for-linus-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml Pull UML updates from Richard Weinberger: - Support for optimized routines based on the host CPU - Support for PCI via virtio - Various fixes * tag 'for-linus-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: remove unneeded semicolon in um_arch.c um: Remove the repeated declaration um: fix error return code in winch_tramp() um: fix error return code in slip_open() um: Fix stack pointer alignment um: implement flush_cache_vmap/flush_cache_vunmap um: add a UML specific futex implementation um: enable the use of optimized xor routines in UML um: Add support for host CPU flags and alignment um: allow not setting extra rpaths in the linux binary um: virtio/pci: enable suspend/resume um: add PCI over virtio emulation driver um: irqs: allow invoking time-travel handler multiple times um: time-travel/signals: fix ndelay() in interrupt um: expose time-travel mode to userspace side um: export signals_enabled directly um: remove unused smp_sigio_handler() declaration lib: add iomem emulation (logic_iomem) um: allow disabling NO_IOMEM |
||
Aneesh Kumar K.V
|
dc4875f0e7 |
mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t *
No functional change in this patch. [aneesh.kumar@linux.ibm.com: m68k build error reported by kernel robot] Link: https://lkml.kernel.org/r/87tulxnb2v.fsf@linux.ibm.com Link: https://lkml.kernel.org/r/20210615110859.320299-2-aneesh.kumar@linux.ibm.com Link: https://lore.kernel.org/linuxppc-dev/CAHk-=wi+J+iodze9FtjM3Zi4j4OeS+qqbKxME9QN4roxPEXH9Q@mail.gmail.com/ Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Hugh Dickins <hughd@google.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Aneesh Kumar K.V
|
9cf6fa2458 |
mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t *
No functional change in this patch. [aneesh.kumar@linux.ibm.com: fix] Link: https://lkml.kernel.org/r/87wnqtnb60.fsf@linux.ibm.com [sfr@canb.auug.org.au: another fix] Link: https://lkml.kernel.org/r/20210619134410.89559-1-aneesh.kumar@linux.ibm.com Link: https://lkml.kernel.org/r/20210615110859.320299-1-aneesh.kumar@linux.ibm.com Link: https://lore.kernel.org/linuxppc-dev/CAHk-=wi+J+iodze9FtjM3Zi4j4OeS+qqbKxME9QN4roxPEXH9Q@mail.gmail.com/ Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Hugh Dickins <hughd@google.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Linus Torvalds
|
4cad671979 |
asm-generic/unaligned: Unify asm/unaligned.h around struct helper
The get_unaligned()/put_unaligned() helpers are traditionally architecture specific, with the two main variants being the "access-ok.h" version that assumes unaligned pointer accesses always work on a particular architecture, and the "le-struct.h" version that casts the data to a byte aligned type before dereferencing, for architectures that cannot always do unaligned accesses in hardware. Based on the discussion linked below, it appears that the access-ok version is not realiable on any architecture, but the struct version probably has no downsides. This series changes the code to use the same implementation on all architectures, addressing the few exceptions separately. Link: https://lore.kernel.org/lkml/75d07691-1e4f-741f-9852-38c0b4f520bc@synopsys.com/ Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100363 Link: https://lore.kernel.org/lkml/20210507220813.365382-14-arnd@kernel.org/ Link: git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git unaligned-rework-v2 Link: https://lore.kernel.org/lkml/CAHk-=whGObOKruA_bU3aPGZfoDqZM1_9wBkwREp0H0FgR-90uQ@mail.gmail.com/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmDfFx4ACgkQmmx57+YA GNkqzRAAjdlIr8M+xI2CyT0/A9tswYfLMeWejmYopq3zlxI6RnvPiJJDIdY2I8US 1npIiDo55w061CnXL9rV65ocL3XmGu1mabOvgM6ATsec+8t4WaXBV9tysxTJ9ea0 ltLTa2P5DXWALvWiVMTME7hFaf1cW+8Uqt3LmXxDp2l5zasXajCHAH6YokON2PfM CsaRhwSxIu8Sbnu/IQGBI9JW5UXsBfKSyUwtM0OwP7jFOuIeZ4WBVA+j6UxONnFC wouKmAM/ThoOsaV9aP4EZLIfBx8d4/hfYQjZ958kYXurerruYkJeEqdIRbV0QqTy 2O6ZrJ6uqPlzfWz9h458me2dt98YEtALHV/3DCWUcBfHmUQtxElyJYEhG0YjVF3H 5RYtjw8Q2LS/QR5ask1Xn0JfT89rRnLi2migAtsA4Ce70JP4Us6wGobkj4SHlgDt P7+eVq2Mkhqw/kmV8N4p+ZS5lpkK0JniDN+ONDhkZqHL/zXG/HQzx9wLV69jlvo2 ASevKxITdi+bKHWs5ANungkBOnBUQZacq46mVyi4HPDwMAFyWvVYTbFumy9koagQ o9NEgX3RsZcxxi7bU1xuFPFMLMlUQT3Nb30+84B4fKe9FmvHC1hizTiCnp7q4bZr z6a6AMHke7YLqKZOqzTJGRR3lPoZZDCb775SAd70LQp6XPZXOHs= =IY5U -----END PGP SIGNATURE----- Merge tag 'asm-generic-unaligned-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm/unaligned.h unification from Arnd Bergmann: "Unify asm/unaligned.h around struct helper The get_unaligned()/put_unaligned() helpers are traditionally architecture specific, with the two main variants being the "access-ok.h" version that assumes unaligned pointer accesses always work on a particular architecture, and the "le-struct.h" version that casts the data to a byte aligned type before dereferencing, for architectures that cannot always do unaligned accesses in hardware. Based on the discussion linked below, it appears that the access-ok version is not realiable on any architecture, but the struct version probably has no downsides. This series changes the code to use the same implementation on all architectures, addressing the few exceptions separately" Link: https://lore.kernel.org/lkml/75d07691-1e4f-741f-9852-38c0b4f520bc@synopsys.com/ Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100363 Link: https://lore.kernel.org/lkml/20210507220813.365382-14-arnd@kernel.org/ Link: git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git unaligned-rework-v2 Link: https://lore.kernel.org/lkml/CAHk-=whGObOKruA_bU3aPGZfoDqZM1_9wBkwREp0H0FgR-90uQ@mail.gmail.com/ * tag 'asm-generic-unaligned-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: asm-generic: simplify asm/unaligned.h asm-generic: uaccess: 1-byte access is always aligned netpoll: avoid put_unaligned() on single character mwifiex: re-fix for unaligned accesses apparmor: use get_unaligned() only for multi-byte words partitions: msdos: fix one-byte get_unaligned() asm-generic: unaligned always use struct helpers asm-generic: unaligned: remove byteshift helpers powerpc: use linux/unaligned/le_struct.h on LE power7 m68k: select CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS sh: remove unaligned access for sh4a openrisc: always use unaligned-struct header asm-generic: use asm-generic/unaligned.h for most architectures |
||
Linus Torvalds
|
71bd934101 |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: "190 patches. Subsystems affected by this patch series: mm (hugetlb, userfaultfd, vmscan, kconfig, proc, z3fold, zbud, ras, mempolicy, memblock, migration, thp, nommu, kconfig, madvise, memory-hotplug, zswap, zsmalloc, zram, cleanups, kfence, and hmm), procfs, sysctl, misc, core-kernel, lib, lz4, checkpatch, init, kprobes, nilfs2, hfs, signals, exec, kcov, selftests, compress/decompress, and ipc" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (190 commits) ipc/util.c: use binary search for max_idx ipc/sem.c: use READ_ONCE()/WRITE_ONCE() for use_global_lock ipc: use kmalloc for msg_queue and shmid_kernel ipc sem: use kvmalloc for sem_undo allocation lib/decompressors: remove set but not used variabled 'level' selftests/vm/pkeys: exercise x86 XSAVE init state selftests/vm/pkeys: refill shadow register after implicit kernel write selftests/vm/pkeys: handle negative sys_pkey_alloc() return code selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random kcov: add __no_sanitize_coverage to fix noinstr for all architectures exec: remove checks in __register_bimfmt() x86: signal: don't do sas_ss_reset() until we are certain that sigframe won't be abandoned hfsplus: report create_date to kstat.btime hfsplus: remove unnecessary oom message nilfs2: remove redundant continue statement in a while-loop kprobes: remove duplicated strong free_insn_page in x86 and s390 init: print out unknown kernel parameters checkpatch: do not complain about positive return values starting with EPOLL checkpatch: improve the indented label test checkpatch: scripts/spdxcheck.py now requires python3 ... |
||
Andy Shevchenko
|
f39650de68 |
kernel.h: split out panic and oops helpers
kernel.h is being used as a dump for all kinds of stuff for a long time. Here is the attempt to start cleaning it up by splitting out panic and oops helpers. There are several purposes of doing this: - dropping dependency in bug.h - dropping a loop by moving out panic_notifier.h - unload kernel.h from something which has its own domain At the same time convert users tree-wide to use new headers, although for the time being include new header back to kernel.h to avoid twisted indirected includes for existing users. [akpm@linux-foundation.org: thread_info.h needs limits.h] [andriy.shevchenko@linux.intel.com: ia64 fix] Link: https://lkml.kernel.org/r/20210520130557.55277-1-andriy.shevchenko@linux.intel.com Link: https://lkml.kernel.org/r/20210511074137.33666-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Co-developed-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Corey Minyard <cminyard@mvista.com> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Wei Liu <wei.liu@kernel.org> Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Sebastian Reichel <sre@kernel.org> Acked-by: Luis Chamberlain <mcgrof@kernel.org> Acked-by: Stephen Boyd <sboyd@kernel.org> Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Acked-by: Helge Deller <deller@gmx.de> # parisc Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Linus Torvalds
|
dbe69e4337 |
Networking changes for 5.14.
Core: - BPF: - add syscall program type and libbpf support for generating instructions and bindings for in-kernel BPF loaders (BPF loaders for BPF), this is a stepping stone for signed BPF programs - infrastructure to migrate TCP child sockets from one listener to another in the same reuseport group/map to improve flexibility of service hand-off/restart - add broadcast support to XDP redirect - allow bypass of the lockless qdisc to improving performance (for pktgen: +23% with one thread, +44% with 2 threads) - add a simpler version of "DO_ONCE()" which does not require jump labels, intended for slow-path usage - virtio/vsock: introduce SOCK_SEQPACKET support - add getsocketopt to retrieve netns cookie - ip: treat lowest address of a IPv4 subnet as ordinary unicast address allowing reclaiming of precious IPv4 addresses - ipv6: use prandom_u32() for ID generation - ip: add support for more flexible field selection for hashing across multi-path routes (w/ offload to mlxsw) - icmp: add support for extended RFC 8335 PROBE (ping) - seg6: add support for SRv6 End.DT46 behavior - mptcp: - DSS checksum support (RFC 8684) to detect middlebox meddling - support Connection-time 'C' flag - time stamping support - sctp: packetization Layer Path MTU Discovery (RFC 8899) - xfrm: speed up state addition with seq set - WiFi: - hidden AP discovery on 6 GHz and other HE 6 GHz improvements - aggregation handling improvements for some drivers - minstrel improvements for no-ack frames - deferred rate control for TXQs to improve reaction times - switch from round robin to virtual time-based airtime scheduler - add trace points: - tcp checksum errors - openvswitch - action execution, upcalls - socket errors via sk_error_report Device APIs: - devlink: add rate API for hierarchical control of max egress rate of virtual devices (VFs, SFs etc.) - don't require RCU read lock to be held around BPF hooks in NAPI context - page_pool: generic buffer recycling New hardware/drivers: - mobile: - iosm: PCIe Driver for Intel M.2 Modem - support for Qualcomm MSM8998 (ipa) - WiFi: Qualcomm QCN9074 and WCN6855 PCI devices - sparx5: Microchip SparX-5 family of Enterprise Ethernet switches - Mellanox BlueField Gigabit Ethernet (control NIC of the DPU) - NXP SJA1110 Automotive Ethernet 10-port switch - Qualcomm QCA8327 switch support (qca8k) - Mikrotik 10/25G NIC (atl1c) Driver changes: - ACPI support for some MDIO, MAC and PHY devices from Marvell and NXP (our first foray into MAC/PHY description via ACPI) - HW timestamping (PTP) support: bnxt_en, ice, sja1105, hns3, tja11xx - Mellanox/Nvidia NIC (mlx5) - NIC VF offload of L2 bridging - support IRQ distribution to Sub-functions - Marvell (prestera): - add flower and match all - devlink trap - link aggregation - Netronome (nfp): connection tracking offload - Intel 1GE (igc): add AF_XDP support - Marvell DPU (octeontx2): ingress ratelimit offload - Google vNIC (gve): new ring/descriptor format support - Qualcomm mobile (rmnet & ipa): inline checksum offload support - MediaTek WiFi (mt76) - mt7915 MSI support - mt7915 Tx status reporting - mt7915 thermal sensors support - mt7921 decapsulation offload - mt7921 enable runtime pm and deep sleep - Realtek WiFi (rtw88) - beacon filter support - Tx antenna path diversity support - firmware crash information via devcoredump - Qualcomm 60GHz WiFi (wcn36xx) - Wake-on-WLAN support with magic packets and GTK rekeying - Micrel PHY (ksz886x/ksz8081): add cable test support Signed-off-by: Jakub Kicinski <kuba@kernel.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmDb+fUACgkQMUZtbf5S Irs2Jg//aqN0Q8CgIvYCVhPxQw1tY7pTAbgyqgBZ01vwjyvtIOgJiWzSfFEU84mX M8fcpFX5eTKrOyJ9S6UFfQ/JG114n3hjAxFFT4Hxk2gC1Tg0vHuFQTDHcUl28bUE mTm61e1YpdorILnv2k5JVQ/wu0vs5QKDrjcYcrcPnh+j93wvnPOgAfDBV95nZzjS OTt4q2fR8GzLcSYWWsclMbDNkzyTG50RW/0Yd6aGjr5QGvXfrMeXfUJNz533PMf/ w5lNyjRKv+x9mdTZJzU0+msNUrZgUdRz7W8Ey8lD3hJZRE+D6/uU7FtsE8Mi3+uc HWxeZUyzA3YF1MfVl/eesbxyPT7S/OkLzk4O5B35FbqP0YltaP+bOjq1/nM3ce1/ io9Dx9pIl/2JANUgRCAtLi8Z2dkvRoqTaBxZ/nPudCCljFwDwl6joTMJ7Ow22i5Y 5aIkcXFmZq4LbJDiHvbTlqT7yiuaEvu2UK/23bSIg/K3nF4eAmkY9Y1EgiMf60OF 78Ttw0wk2tUegwaS5MZnCniKBKDyl9gM2F6rbZ/IxQRR2LTXFc1B6gC+ynUxgXfh Ub8O++6qGYGYZ0XvQH4pzco79p3qQWBTK5beIp2eu6BOAjBVIXq4AibUfoQLACsu hX7jMPYd0kc3WFgUnKgQP8EnjFSwbf4XiaE7fIXvWBY8hzCw2h4= =LvtX -----END PGP SIGNATURE----- Merge tag 'net-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - BPF: - add syscall program type and libbpf support for generating instructions and bindings for in-kernel BPF loaders (BPF loaders for BPF), this is a stepping stone for signed BPF programs - infrastructure to migrate TCP child sockets from one listener to another in the same reuseport group/map to improve flexibility of service hand-off/restart - add broadcast support to XDP redirect - allow bypass of the lockless qdisc to improving performance (for pktgen: +23% with one thread, +44% with 2 threads) - add a simpler version of "DO_ONCE()" which does not require jump labels, intended for slow-path usage - virtio/vsock: introduce SOCK_SEQPACKET support - add getsocketopt to retrieve netns cookie - ip: treat lowest address of a IPv4 subnet as ordinary unicast address allowing reclaiming of precious IPv4 addresses - ipv6: use prandom_u32() for ID generation - ip: add support for more flexible field selection for hashing across multi-path routes (w/ offload to mlxsw) - icmp: add support for extended RFC 8335 PROBE (ping) - seg6: add support for SRv6 End.DT46 behavior - mptcp: - DSS checksum support (RFC 8684) to detect middlebox meddling - support Connection-time 'C' flag - time stamping support - sctp: packetization Layer Path MTU Discovery (RFC 8899) - xfrm: speed up state addition with seq set - WiFi: - hidden AP discovery on 6 GHz and other HE 6 GHz improvements - aggregation handling improvements for some drivers - minstrel improvements for no-ack frames - deferred rate control for TXQs to improve reaction times - switch from round robin to virtual time-based airtime scheduler - add trace points: - tcp checksum errors - openvswitch - action execution, upcalls - socket errors via sk_error_report Device APIs: - devlink: add rate API for hierarchical control of max egress rate of virtual devices (VFs, SFs etc.) - don't require RCU read lock to be held around BPF hooks in NAPI context - page_pool: generic buffer recycling New hardware/drivers: - mobile: - iosm: PCIe Driver for Intel M.2 Modem - support for Qualcomm MSM8998 (ipa) - WiFi: Qualcomm QCN9074 and WCN6855 PCI devices - sparx5: Microchip SparX-5 family of Enterprise Ethernet switches - Mellanox BlueField Gigabit Ethernet (control NIC of the DPU) - NXP SJA1110 Automotive Ethernet 10-port switch - Qualcomm QCA8327 switch support (qca8k) - Mikrotik 10/25G NIC (atl1c) Driver changes: - ACPI support for some MDIO, MAC and PHY devices from Marvell and NXP (our first foray into MAC/PHY description via ACPI) - HW timestamping (PTP) support: bnxt_en, ice, sja1105, hns3, tja11xx - Mellanox/Nvidia NIC (mlx5) - NIC VF offload of L2 bridging - support IRQ distribution to Sub-functions - Marvell (prestera): - add flower and match all - devlink trap - link aggregation - Netronome (nfp): connection tracking offload - Intel 1GE (igc): add AF_XDP support - Marvell DPU (octeontx2): ingress ratelimit offload - Google vNIC (gve): new ring/descriptor format support - Qualcomm mobile (rmnet & ipa): inline checksum offload support - MediaTek WiFi (mt76) - mt7915 MSI support - mt7915 Tx status reporting - mt7915 thermal sensors support - mt7921 decapsulation offload - mt7921 enable runtime pm and deep sleep - Realtek WiFi (rtw88) - beacon filter support - Tx antenna path diversity support - firmware crash information via devcoredump - Qualcomm WiFi (wcn36xx) - Wake-on-WLAN support with magic packets and GTK rekeying - Micrel PHY (ksz886x/ksz8081): add cable test support" * tag 'net-next-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2168 commits) tcp: change ICSK_CA_PRIV_SIZE definition tcp_yeah: check struct yeah size at compile time gve: DQO: Fix off by one in gve_rx_dqo() stmmac: intel: set PCI_D3hot in suspend stmmac: intel: Enable PHY WOL option in EHL net: stmmac: option to enable PHY WOL with PMT enabled net: say "local" instead of "static" addresses in ndo_dflt_fdb_{add,del} net: use netdev_info in ndo_dflt_fdb_{add,del} ptp: Set lookup cookie when creating a PTP PPS source. net: sock: add trace for socket errors net: sock: introduce sk_error_report net: dsa: replay the local bridge FDB entries pointing to the bridge dev too net: dsa: ensure during dsa_fdb_offload_notify that dev_hold and dev_put are on the same dev net: dsa: include fdb entries pointing to bridge in the host fdb list net: dsa: include bridge addresses which are local in the host fdb list net: dsa: sync static FDB entries on foreign interfaces to hardware net: dsa: install the host MDB and FDB entries in the master's RX filter net: dsa: reference count the FDB addresses at the cross-chip notifier level net: dsa: introduce a separate cross-chip notifier type for host FDBs net: dsa: reference count the MDB entries at the cross-chip notifier level ... |
||
Linus Torvalds
|
65090f30ab |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: "191 patches. Subsystems affected by this patch series: kthread, ia64, scripts, ntfs, squashfs, ocfs2, kernel/watchdog, and mm (gup, pagealloc, slab, slub, kmemleak, dax, debug, pagecache, gup, swap, memcg, pagemap, mprotect, bootmem, dma, tracing, vmalloc, kasan, initialization, pagealloc, and memory-failure)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (191 commits) mm,hwpoison: make get_hwpoison_page() call get_any_page() mm,hwpoison: send SIGBUS with error virutal address mm/page_alloc: split pcp->high across all online CPUs for cpuless nodes mm/page_alloc: allow high-order pages to be stored on the per-cpu lists mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA docs: remove description of DISCONTIGMEM arch, mm: remove stale mentions of DISCONIGMEM mm: remove CONFIG_DISCONTIGMEM m68k: remove support for DISCONTIGMEM arc: remove support for DISCONTIGMEM arc: update comment about HIGHMEM implementation alpha: remove DISCONTIGMEM and NUMA mm/page_alloc: move free_the_page mm/page_alloc: fix counting of managed_pages mm/page_alloc: improve memmap_pages dbg msg mm: drop SECTION_SHIFT in code comments mm/page_alloc: introduce vm.percpu_pagelist_high_fraction mm/page_alloc: limit the number of pages on PCP lists when reclaim is active mm/page_alloc: scale the number of pages that are batch freed ... |
||
Mike Rapoport
|
a9ee6cf5c6 |
mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA
After removal of DISCINTIGMEM the NEED_MULTIPLE_NODES and NUMA configuration options are equivalent. Drop CONFIG_NEED_MULTIPLE_NODES and use CONFIG_NUMA instead. Done with $ sed -i 's/CONFIG_NEED_MULTIPLE_NODES/CONFIG_NUMA/' \ $(git grep -wl CONFIG_NEED_MULTIPLE_NODES) $ sed -i 's/NEED_MULTIPLE_NODES/NUMA/' \ $(git grep -wl NEED_MULTIPLE_NODES) with manual tweaks afterwards. [rppt@linux.ibm.com: fix arm boot crash] Link: https://lkml.kernel.org/r/YMj9vHhHOiCVN4BF@linux.ibm.com Link: https://lkml.kernel.org/r/20210608091316.3622-9-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David Hildenbrand <david@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Mike Rapoport
|
bb1c50d396 |
mm: remove CONFIG_DISCONTIGMEM
There are no architectures that support DISCONTIGMEM left. Remove the configuration option and the dead code it was guarding in the generic memory management code. Link: https://lkml.kernel.org/r/20210608091316.3622-6-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David Hildenbrand <david@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Daniel Axtens
|
c0f8aa4fa8 |
mm: define default MAX_PTRS_PER_* in include/pgtable.h
Commit
|
||
Tanner Love
|
a358f40600 |
once: implement DO_ONCE_LITE for non-fast-path "do once" functionality
Certain uses of "do once" functionality reside outside of fast path, and so do not require jump label patching via static keys, making existing DO_ONCE undesirable in such cases. Replace uses of __section(".data.once") with DO_ONCE_LITE(_IF)? This patch changes the return values of xfs_printk_once, printk_once, and printk_deferred_once. Before, they returned whether the print was performed, but now, they always return true. This is okay because the return values of the following macros are entirely ignored throughout the kernel: - xfs_printk_once - xfs_warn_once - xfs_notice_once - xfs_info_once - printk_once - pr_emerg_once - pr_alert_once - pr_crit_once - pr_err_once - pr_warn_once - pr_notice_once - pr_info_once - pr_devel_once - pr_debug_once - printk_deferred_once - orc_warn Changes v3: - Expand commit message to explain why changing return values of xfs_printk_once, printk_once, printk_deferred_once is benign v2: - Fix i386 build warnings Signed-off-by: Tanner Love <tannerlove@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Acked-by: Mahesh Bandewar <maheshb@google.com> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
Linus Torvalds
|
36824f198c |
ARM:
- Add MTE support in guests, complete with tag save/restore interface - Reduce the impact of CMOs by moving them in the page-table code - Allow device block mappings at stage-2 - Reduce the footprint of the vmemmap in protected mode - Support the vGIC on dumb systems such as the Apple M1 - Add selftest infrastructure to support multiple configuration and apply that to PMU/non-PMU setups - Add selftests for the debug architecture - The usual crop of PMU fixes PPC: - Support for the H_RPT_INVALIDATE hypercall - Conversion of Book3S entry/exit to C - Bug fixes S390: - new HW facilities for guests - make inline assembly more robust with KASAN and co x86: - Allow userspace to handle emulation errors (unknown instructions) - Lazy allocation of the rmap (host physical -> guest physical address) - Support for virtualizing TSC scaling on VMX machines - Optimizations to avoid shattering huge pages at the beginning of live migration - Support for initializing the PDPTRs without loading them from memory - Many TLB flushing cleanups - Refuse to load if two-stage paging is available but NX is not (this has been a requirement in practice for over a year) - A large series that separates the MMU mode (WP/SMAP/SMEP etc.) from CR0/CR4/EFER, using the MMU mode everywhere once it is computed from the CPU registers - Use PM notifier to notify the guest about host suspend or hibernate - Support for passing arguments to Hyper-V hypercalls using XMM registers - Support for Hyper-V TLB flush hypercalls and enlightened MSR bitmap on AMD processors - Hide Hyper-V hypercalls that are not included in the guest CPUID - Fixes for live migration of virtual machines that use the Hyper-V "enlightened VMCS" optimization of nested virtualization - Bugfixes (not many) Generic: - Support for retrieving statistics without debugfs - Cleanups for the KVM selftests API -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmDV9UYUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroOIRgf/XX8fKLh24RnTOs2ldIu2AfRGVrT4 QMrr8MxhmtukBAszk2xKvBt8/6gkUjdaIC3xqEnVjxaDaUvZaEtP7CQlF5JV45rn iv1zyxUKucXrnIOr+gCioIT7qBlh207zV35ArKioP9Y83cWx9uAs22pfr6g+7RxO h8bJZlJbSG6IGr3voANCIb9UyjU1V/l8iEHqRwhmr/A5rARPfD7g8lfMEQeGkzX6 +/UydX2fumB3tl8e2iMQj6vLVdSOsCkehvpHK+Z33EpkKhan7GwZ2sZ05WmXV/nY QLAYfD10KegoNWl5Ay4GTp4hEAIYVrRJCLC+wnLdc0U8udbfCuTC31LK4w== =NcRh -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull kvm updates from Paolo Bonzini: "This covers all architectures (except MIPS) so I don't expect any other feature pull requests this merge window. ARM: - Add MTE support in guests, complete with tag save/restore interface - Reduce the impact of CMOs by moving them in the page-table code - Allow device block mappings at stage-2 - Reduce the footprint of the vmemmap in protected mode - Support the vGIC on dumb systems such as the Apple M1 - Add selftest infrastructure to support multiple configuration and apply that to PMU/non-PMU setups - Add selftests for the debug architecture - The usual crop of PMU fixes PPC: - Support for the H_RPT_INVALIDATE hypercall - Conversion of Book3S entry/exit to C - Bug fixes S390: - new HW facilities for guests - make inline assembly more robust with KASAN and co x86: - Allow userspace to handle emulation errors (unknown instructions) - Lazy allocation of the rmap (host physical -> guest physical address) - Support for virtualizing TSC scaling on VMX machines - Optimizations to avoid shattering huge pages at the beginning of live migration - Support for initializing the PDPTRs without loading them from memory - Many TLB flushing cleanups - Refuse to load if two-stage paging is available but NX is not (this has been a requirement in practice for over a year) - A large series that separates the MMU mode (WP/SMAP/SMEP etc.) from CR0/CR4/EFER, using the MMU mode everywhere once it is computed from the CPU registers - Use PM notifier to notify the guest about host suspend or hibernate - Support for passing arguments to Hyper-V hypercalls using XMM registers - Support for Hyper-V TLB flush hypercalls and enlightened MSR bitmap on AMD processors - Hide Hyper-V hypercalls that are not included in the guest CPUID - Fixes for live migration of virtual machines that use the Hyper-V "enlightened VMCS" optimization of nested virtualization - Bugfixes (not many) Generic: - Support for retrieving statistics without debugfs - Cleanups for the KVM selftests API" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (314 commits) KVM: x86: rename apic_access_page_done to apic_access_memslot_enabled kvm: x86: disable the narrow guest module parameter on unload selftests: kvm: Allows userspace to handle emulation errors. kvm: x86: Allow userspace to handle emulation errors KVM: x86/mmu: Let guest use GBPAGES if supported in hardware and TDP is on KVM: x86/mmu: Get CR4.SMEP from MMU, not vCPU, in shadow page fault KVM: x86/mmu: Get CR0.WP from MMU, not vCPU, in shadow page fault KVM: x86/mmu: Drop redundant rsvd bits reset for nested NPT KVM: x86/mmu: Optimize and clean up so called "last nonleaf level" logic KVM: x86: Enhance comments for MMU roles and nested transition trickiness KVM: x86/mmu: WARN on any reserved SPTE value when making a valid SPTE KVM: x86/mmu: Add helpers to do full reserved SPTE checks w/ generic MMU KVM: x86/mmu: Use MMU's role to determine PTTYPE KVM: x86/mmu: Collapse 32-bit PAE and 64-bit statements for helpers KVM: x86/mmu: Add a helper to calculate root from role_regs KVM: x86/mmu: Add helper to update paging metadata KVM: x86/mmu: Don't update nested guest's paging bitmasks if CR0.PG=0 KVM: x86/mmu: Consolidate reset_rsvds_bits_mask() calls KVM: x86/mmu: Use MMU role_regs to get LA57, and drop vCPU LA57 helper KVM: x86/mmu: Get nested MMU's root level from the MMU's role ... |
||
Linus Torvalds
|
54a728dc5e |
Scheduler udpates for this cycle:
- Changes to core scheduling facilities: - Add "Core Scheduling" via CONFIG_SCHED_CORE=y, which enables coordinated scheduling across SMT siblings. This is a much requested feature for cloud computing platforms, to allow the flexible utilization of SMT siblings, without exposing untrusted domains to information leaks & side channels, plus to ensure more deterministic computing performance on SMT systems used by heterogenous workloads. There's new prctls to set core scheduling groups, which allows more flexible management of workloads that can share siblings. - Fix task->state access anti-patterns that may result in missed wakeups and rename it to ->__state in the process to catch new abuses. - Load-balancing changes: - Tweak newidle_balance for fair-sched, to improve 'memcache'-like workloads. - "Age" (decay) average idle time, to better track & improve workloads such as 'tbench'. - Fix & improve energy-aware (EAS) balancing logic & metrics. - Fix & improve the uclamp metrics. - Fix task migration (taskset) corner case on !CONFIG_CPUSET. - Fix RT and deadline utilization tracking across policy changes - Introduce a "burstable" CFS controller via cgroups, which allows bursty CPU-bound workloads to borrow a bit against their future quota to improve overall latencies & batching. Can be tweaked via /sys/fs/cgroup/cpu/<X>/cpu.cfs_burst_us. - Rework assymetric topology/capacity detection & handling. - Scheduler statistics & tooling: - Disable delayacct by default, but add a sysctl to enable it at runtime if tooling needs it. Use static keys and other optimizations to make it more palatable. - Use sched_clock() in delayacct, instead of ktime_get_ns(). - Misc cleanups and fixes. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmDZcPoRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1g3yw//WfhIqy7Psa9d/MBMjQDRGbTuO4+w22Dj vmWFU44Q4KJxQHWeIgUlrK+dzvYWvNmflUs2CUUOiDVzxFTHMIyBtL4qCBUbx4Ns vKAcB9wsWZge2o3WzZqpProRhdoRaSKw8egUr2q7rACVBkckY7eGP/OjWxXU8BdA b7D0LPWwuIBFfN4pFYeCDLn32Dqr9s6Chyj+ZecabdG7EE6Gu+f1diVcxy7JE/mc 4WWL0D1RqdgpGrBEuMJIxPYekdrZiuy4jtEbztz5gbTBteN1cj3BLfqn0Pc/e6rO Vyuc5mXCAmzRVi18z6g6bsVl+IA/nrbErENB2OHOhOYtqiZxqGTd4GPWZszMyY17 5AsEO5+5pcaBsy4gyp09qURggBu9zhJnMVmOI3rIHZkmkhwzc6uUJlyhDCTiFWOz 3ZF3LjbZEyCKodMD8qMHbs3axIBpIfZqjzkvSKyFnvfXEGVytVse7NUuWtQ36u92 GnURxVeYY1TDVXvE1Y8owNKMxknKQ6YRlypP7Dtbeo/qG6hShp0xmS7qDLDi0ybZ ZlK+bDECiVoDf3nvJo+8v5M82IJ3CBt4UYldeRJsa1YCK/FsbK8tp91fkEfnXVue +U6LPX0AmMpXacR5HaZfb3uBIKRw/QMdP/7RFtBPhpV6jqCrEmuqHnpPQiEVtxwO UmG7bt94Trk= =3VDr -----END PGP SIGNATURE----- Merge tag 'sched-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler udpates from Ingo Molnar: - Changes to core scheduling facilities: - Add "Core Scheduling" via CONFIG_SCHED_CORE=y, which enables coordinated scheduling across SMT siblings. This is a much requested feature for cloud computing platforms, to allow the flexible utilization of SMT siblings, without exposing untrusted domains to information leaks & side channels, plus to ensure more deterministic computing performance on SMT systems used by heterogenous workloads. There are new prctls to set core scheduling groups, which allows more flexible management of workloads that can share siblings. - Fix task->state access anti-patterns that may result in missed wakeups and rename it to ->__state in the process to catch new abuses. - Load-balancing changes: - Tweak newidle_balance for fair-sched, to improve 'memcache'-like workloads. - "Age" (decay) average idle time, to better track & improve workloads such as 'tbench'. - Fix & improve energy-aware (EAS) balancing logic & metrics. - Fix & improve the uclamp metrics. - Fix task migration (taskset) corner case on !CONFIG_CPUSET. - Fix RT and deadline utilization tracking across policy changes - Introduce a "burstable" CFS controller via cgroups, which allows bursty CPU-bound workloads to borrow a bit against their future quota to improve overall latencies & batching. Can be tweaked via /sys/fs/cgroup/cpu/<X>/cpu.cfs_burst_us. - Rework assymetric topology/capacity detection & handling. - Scheduler statistics & tooling: - Disable delayacct by default, but add a sysctl to enable it at runtime if tooling needs it. Use static keys and other optimizations to make it more palatable. - Use sched_clock() in delayacct, instead of ktime_get_ns(). - Misc cleanups and fixes. * tag 'sched-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (72 commits) sched/doc: Update the CPU capacity asymmetry bits sched/topology: Rework CPU capacity asymmetry detection sched/core: Introduce SD_ASYM_CPUCAPACITY_FULL sched_domain flag psi: Fix race between psi_trigger_create/destroy sched/fair: Introduce the burstable CFS controller sched/uclamp: Fix uclamp_tg_restrict() sched/rt: Fix Deadline utilization tracking during policy change sched/rt: Fix RT utilization tracking during policy change sched: Change task_struct::state sched,arch: Remove unused TASK_STATE offsets sched,timer: Use __set_current_state() sched: Add get_current_state() sched,perf,kvm: Fix preemption condition sched: Introduce task_is_running() sched: Unbreak wakeups sched/fair: Age the average idle time sched/cpufreq: Consider reduced CPU capacity in energy calculation sched/fair: Take thermal pressure into account while estimating energy thermal/cpufreq_cooling: Update offline CPUs per-cpu thermal_pressure sched/fair: Return early from update_tg_cfs_load() if delta == 0 ... |
||
Linus Torvalds
|
a15286c63d |
Locking changes for this cycle:
- Core locking & atomics: - Convert all architectures to ARCH_ATOMIC: move every architecture to ARCH_ATOMIC, then get rid of ARCH_ATOMIC and all the transitory facilities and #ifdefs. Much reduction in complexity from that series: 63 files changed, 756 insertions(+), 4094 deletions(-) - Self-test enhancements - Futexes: - Add the new FUTEX_LOCK_PI2 ABI, which is a variant that doesn't set FLAGS_CLOCKRT (.e. uses CLOCK_MONOTONIC). [ The temptation to repurpose FUTEX_LOCK_PI's implicit setting of FLAGS_CLOCKRT & invert the flag's meaning to avoid having to introduce a new variant was resisted successfully. ] - Enhance futex self-tests - Lockdep: - Fix dependency path printouts - Optimize trace saving - Broaden & fix wait-context checks - Misc cleanups and fixes. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmDZaEYRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hPdxAAiNCsxL6X1cZ8zqbWsvLefT9Zqhzgs5u6 gdZele7PNibvbYdON26b5RUzuKfOW/hgyX6LKqr+AiNYTT9PGhcY+tycUr2PGk5R LMyhJWmmX5cUVPU92ky+z5hEHB2gr4XPJcvgpKKUL0XB1tBaSvy2DtgwPuhXOoT1 1sCQfy63t71snt2RfEnibVW6xovwaA2lsqL81lLHJN4iRFWvqO498/m4+PWkylsm ig/+VT1Oz7t4wqu3NhTqNNZv+4K4W2asniyo53Dg2BnRm/NjhJtgg4jRibrb0ssb 67Xdq6y8+xNBmEAKj+Re8VpMcu4aj346Ctk7d4gst2ah/Rc0TvqfH6mezH7oq7RL hmOrMBWtwQfKhEE/fDkng30nrVxc/98YXP0n2rCCa0ySsaF6b6T185mTcYDRDxFs BVNS58ub+zxrF9Zd4nhIHKaEHiL2ZdDimqAicXN0RpywjIzTQ/y11uU7I1WBsKkq WkPYs+FPHnX7aBv1MsuxHhb8sUXjG924K4JeqnjF45jC3sC1crX+N0jv4wHw+89V h4k20s2Tw6m5XGXlgGwMJh0PCcD6X22Vd9Uyw8zb+IJfvNTGR9Rp1Ec+1gMRSll+ xsn6G6Uy9bcNU0SqKlBSfelweGKn4ZxbEPn76Jc8KWLiepuZ6vv5PBoOuaujWht9 KAeOC5XdjMk= =tH// -----END PGP SIGNATURE----- Merge tag 'locking-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking updates from Ingo Molnar: - Core locking & atomics: - Convert all architectures to ARCH_ATOMIC: move every architecture to ARCH_ATOMIC, then get rid of ARCH_ATOMIC and all the transitory facilities and #ifdefs. Much reduction in complexity from that series: 63 files changed, 756 insertions(+), 4094 deletions(-) - Self-test enhancements - Futexes: - Add the new FUTEX_LOCK_PI2 ABI, which is a variant that doesn't set FLAGS_CLOCKRT (.e. uses CLOCK_MONOTONIC). [ The temptation to repurpose FUTEX_LOCK_PI's implicit setting of FLAGS_CLOCKRT & invert the flag's meaning to avoid having to introduce a new variant was resisted successfully. ] - Enhance futex self-tests - Lockdep: - Fix dependency path printouts - Optimize trace saving - Broaden & fix wait-context checks - Misc cleanups and fixes. * tag 'locking-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits) locking/lockdep: Correct the description error for check_redundant() futex: Provide FUTEX_LOCK_PI2 to support clock selection futex: Prepare futex_lock_pi() for runtime clock selection lockdep/selftest: Remove wait-type RCU_CALLBACK tests lockdep/selftests: Fix selftests vs PROVE_RAW_LOCK_NESTING lockdep: Fix wait-type for empty stack locking/selftests: Add a selftest for check_irq_usage() lockding/lockdep: Avoid to find wrong lock dep path in check_irq_usage() locking/lockdep: Remove the unnecessary trace saving locking/lockdep: Fix the dep path printing for backwards BFS selftests: futex: Add futex compare requeue test selftests: futex: Add futex wait test seqlock: Remove trailing semicolon in macros locking/lockdep: Reduce LOCKDEP dependency list locking/lockdep,doc: Improve readability of the block matrix locking/atomics: atomic-instrumented: simplify ifdeffery locking/atomic: delete !ARCH_ATOMIC remnants locking/atomic: xtensa: move to ARCH_ATOMIC locking/atomic: sparc: move to ARCH_ATOMIC locking/atomic: sh: move to ARCH_ATOMIC ... |
||
Ingo Molnar
|
b2c0931a07 |
Merge branch 'sched/urgent' into sched/core, to resolve conflicts
This commit in sched/urgent moved the cfs_rq_is_decayed() function: |
||
Johannes Berg
|
ca2e334232 |
lib: add iomem emulation (logic_iomem)
Add IO memory emulation that uses callbacks for read/write to the allocated regions. The callbacks can be registered by the users using logic_iomem_alloc(). To use, an architecture must 'select LOGIC_IOMEM' in Kconfig and then include <asm-generic/logic_io.h> into asm/io.h to get the __raw_read*/__raw_write* functions. Optionally, an architecture may 'select LOGIC_IOMEM_FALLBACK' in which case non-emulated regions will 'fall back' to the various real_* functions that must then be provided. Cc: Arnd Bergmann <arnd@kernel.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Richard Weinberger <richard@nod.at> |
||
Vitaly Kuznetsov
|
f15cdceab5 |
asm-generic/hyperv: add HV_STATUS_ACCESS_DENIED definition
From TLFSv6.0b, this status means: "The caller did not possess sufficient access rights to perform the requested operation." Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Acked-by: Wei Liu <wei.liu@kernel.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20210521095204.2161214-2-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
Nathan Chancellor
|
d4c6399900 |
vmlinux.lds.h: Avoid orphan section with !SMP
With x86_64_defconfig and the following configs, there is an orphan
section warning:
CONFIG_SMP=n
CONFIG_AMD_MEM_ENCRYPT=y
CONFIG_HYPERVISOR_GUEST=y
CONFIG_KVM=y
CONFIG_PARAVIRT=y
ld: warning: orphan section `.data..decrypted' from `arch/x86/kernel/cpu/vmware.o' being placed in section `.data..decrypted'
ld: warning: orphan section `.data..decrypted' from `arch/x86/kernel/kvm.o' being placed in section `.data..decrypted'
These sections are created with DEFINE_PER_CPU_DECRYPTED, which
ultimately turns into __PCPU_ATTRS, which in turn has a section
attribute with a value of PER_CPU_BASE_SECTION + the section name. When
CONFIG_SMP is not set, the base section is .data and that is not
currently handled in any linker script.
Add .data..decrypted to PERCPU_DECRYPTED_SECTION, which is included in
PERCPU_INPUT -> PERCPU_SECTION, which is include in the x86 linker
script when either CONFIG_X86_64 or CONFIG_SMP is unset, taking care of
the warning.
Fixes:
|
||
Mark Rutland
|
bccf1ec369 |
locking/atomics: atomic-instrumented: simplify ifdeffery
Now that all architectures implement ARCH_ATOMIC, the fallbacks are generated before the instrumented wrappers are generated. Due to this, in atomic-instrumented.h we can assume that the whole set of atomic functions has been generated. Likewise, atomic-instrumented.h doesn't need to provide a preprocessor definition for every atomic it wraps. This patch removes the redundant ifdeffery. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210525140232.53872-34-mark.rutland@arm.com |
||
Mark Rutland
|
3c1885187b |
locking/atomic: delete !ARCH_ATOMIC remnants
Now that all architectures implement ARCH_ATOMIC, we can make it mandatory, removing the Kconfig symbol and logic for !ARCH_ATOMIC. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210525140232.53872-33-mark.rutland@arm.com |
||
Mark Rutland
|
82b993e824 |
locking/atomic: cmpxchg: support ARCH_ATOMIC
We'd like all architectures to convert to ARCH_ATOMIC, as this will enable functionality, and once all architectures are converted it will be possible to make significant cleanups to the atomic headers. A number of architectures use asm-generic/cmpxchg.h or asm-generic/cmpxhg-local.h, and it's impractical to convert the headers and all these architectures in one go. To make it possible to convert them one-by-one, let's make the asm-generic implementation function as either cmpxchg*() or arch_cmpxchg*() depending on whether ARCH_ATOMIC is selected. To do this, the generic implementations are prefixed as generic_cmpxchg_*(), and preprocessor definitions map cmpxchg_*()/arch_cmpxchg_*() onto these as appropriate. Once all users are moved over to ARCH_ATOMIC the ifdeffery in the header can be simplified and/or removed entirely. For existing users (none of which select ARCH_ATOMIC), there should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210525140232.53872-13-mark.rutland@arm.com |
||
Mark Rutland
|
6988631bdf |
locking/atomic: cmpxchg: make generic a prefix
The asm-generic implementations of cmpxchg_local() and cmpxchg64_local() use a `_generic` suffix to distinguish themselves from arch code or wrappers used elsewhere. Subsequent patches will add ARCH_ATOMIC support to these implementations, and will distinguish more functions with a `generic` portion. To align with how ARCH_ATOMIC uses an `arch_` prefix, it would be helpful to use a `generic_` prefix rather than a `_generic` suffix. In preparation for this, this patch renames the existing functions to make `generic` a prefix rather than a suffix. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210525140232.53872-12-mark.rutland@arm.com |
||
Mark Rutland
|
1bdadf46ef |
locking/atomic: atomic64: support ARCH_ATOMIC
We'd like all architectures to convert to ARCH_ATOMIC, as this will enable functionality, and once all architectures are converted it will be possible to make significant cleanups to the atomic headers. A number of architectures use asm-generic/atomic64.h, and it's impractical to convert the header and all these architectures in one go. To make it possible to convert them one-by-one, let's make the asm-generic implementation function as either atomic64_*() or arch_atomic64_*() depending on whether ARCH_ATOMIC is selected. To do this, the generic implementations are prefixed as generic_atomic64_*(), and preprocessor definitions map atomic64_*()/arch_atomic64_*() onto these as appropriate. Once all users are moved over to ARCH_ATOMIC the ifdeffery in the header can be simplified and/or removed entirely. For existing users (none of which select ARCH_ATOMIC), there should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210525140232.53872-11-mark.rutland@arm.com |
||
Mark Rutland
|
f8b6455a9d |
locking/atomic: atomic: support ARCH_ATOMIC
We'd like all architectures to convert to ARCH_ATOMIC, as this will enable functionality, and once all architectures are converted it will be possible to make significant cleanups to the atomic headers. A number of architectures use asm-generic/atomic.h, and it's impractical to convert the header and all these architectures in one go. To make it possible to convert them one-by-one, let's make the asm-generic implementation function as either atomic_*() or arch_atomic_*() depending on whether ARCH_ATOMIC is selected. To do this, the C implementations are prefixed as generic_atomic_*(), and preprocessor definitions map atomic_*()/arch_atomic_*() onto these as appropriate. Once all users are moved over to ARCH_ATOMIC the ifdeffery in the header can be simplified and/or removed entirely. For existing users (none of which select ARCH_ATOMIC), there should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210525140232.53872-10-mark.rutland@arm.com |
||
Mark Rutland
|
d0e03218ca |
locking/atomic: atomic: simplify ifdeffery
Now that asm-generic/atomic.h is only used by architectures without any architecture-specific atomic definitions, we know that there will be no architecture-specific implementations to override, and can remove the ifdeffery this has previously required, bringing it into line with asm-generic/atomic64.h. At the same time, we can implement atomic_add() and atomic_sub() directly using ATOMIC_OP(), since we know architectures won't provide atomic_add_return() or atomic_sub_return(). There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210525140232.53872-9-mark.rutland@arm.com |
||
Mark Rutland
|
89eb78d542 |
locking/atomic: atomic: remove redundant include
Since commit:
|
||
Mark Rutland
|
2609a195fb |
locking/atomic: atomic: remove stale comments
The commentary in asm-generic/atomic.h is stale; let's bring it up-to date: * The block comment at the start of the file mentions this is only usable on UP systems, but is immediately followed by an SMP implementation using cmpxchg. Let's delete the misleading statement. * A comment near the end of the file was originally at the top of the file, but over time rework has shuffled it near the end, and it's long been superceded by the block comment at the top of the file. Let's remove it. * Since asm-generic/atomic.h isn't the canonical documentation for the atomic ops, and since the existing comments are not in kerneldoc format, we don't need to document the semantics of each operation here (and this would be better done in a centralised document). Let's remove these comments. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210525140232.53872-7-mark.rutland@arm.com |
||
Arnd Bergmann
|
803f4e1eab |
asm-generic: simplify asm/unaligned.h
The get_unaligned()/put_unaligned() implementations are much more complex than necessary, now that all architectures use the same code. Move everything into one file and use a much more compact way to express the same logic. I've compared the binary output using gcc-11 across defconfig builds for all architectures and found this patch to make no difference, except for a single function on powerpc that needs two additional register moves because of random differences in register allocation. There are a handful of callers of the low-level __get_unaligned_cpu32, so leave that in place for the time being even though the common code no longer uses it. This adds a warning for any caller of get_unaligned()/put_unaligned() that passes in a single-byte pointer, but I've sent patches for all instances that show up in x86 and randconfig builds. It would be nice to change the arguments of the endian-specific accessors to take the matching __be16/__be32/__be64/__le16/__le32/__le64 arguments instead of a void pointer, but that requires more changes to the rest of the kernel. This new version does allow aggregate types into get_unaligned(), which was not the original goal but might come in handy. Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
Arnd Bergmann
|
d40d817948 |
asm-generic: uaccess: 1-byte access is always aligned
With the cleaned up version of asm-generic/unaligned.h, there is a warning about the get_user/put_user helpers using unaligned access for single-byte variables: include/asm-generic/uaccess.h: In function ‘__get_user_fn’: include/asm-generic/unaligned.h:13:15: warning: ‘packed’ attribute ignored for field of type ‘u8’ {aka ‘unsigned char’} [-Wattributes] const struct { type x __packed; } *__pptr = (typeof(__pptr))(ptr); \ Change these to use a direct pointer dereference to avoid the warnings. Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
Valentin Schneider
|
f1a0a376ca |
sched/core: Initialize the idle task with preemption disabled
As pointed out by commit
|
||
Arnd Bergmann
|
778aaefb8e |
asm-generic: unaligned always use struct helpers
As found by Vineet Gupta and Linus Torvalds, gcc has somewhat unexpected
behavior when faced with overlapping unaligned pointers. The kernel's
unaligned/access-ok.h header technically invokes undefined behavior
that happens to usually work on the architectures using it, but if the
compiler optimizes code based on the assumption that undefined behavior
doesn't happen, it can create output that actually causes data corruption.
A related problem was previously found on 32-bit ARMv7, where most
instructions can be used on unaligned data, but 64-bit ldrd/strd causes
an exception. The workaround was to always use the unaligned/le_struct.h
helper instead of unaligned/access-ok.h, in commit
|
||
Arnd Bergmann
|
0652035a57 |
asm-generic: unaligned: remove byteshift helpers
In theory, compilers should be able to work this out themselves so we can use a simpler version based on the swab() helpers. I have verified that this works on all supported compiler versions (gcc-4.9 and up, clang-10 and up). Looking at the object code produced by gcc-11, I found that the impact is mostly a change in inlining decisions that lead to slightly larger code. In other cases, this version produces explicit byte swaps in place of separate byte access, or comparing against pre-swapped constants. While the source code is clearly simpler, I have not seen an indication of the new version actually producing better code on Arm, so maybe we want to skip this after all. From what I can tell, gcc recognizes the byteswap pattern in the byteshift.h header and can turn it into explicit instructions, but it does not turn a __builtin_bswap32() back into individual bytes when that would result in better output, e.g. when storing a byte-reversed constant. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
David Hildenbrand
|
f2e762bab9 |
mm: remove xlate_dev_kmem_ptr()
Since /dev/kmem has been removed, let's remove the xlate_dev_kmem_ptr() leftovers. Link: https://lkml.kernel.org/r/20210324102351.6932-3-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Brian Cain <bcain@codeaurora.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Helge Deller <deller@gmx.de> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Hildenbrand <david@redhat.com> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Mikulas Patocka <mpatocka@redhat.com> Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Palmer Dabbelt <palmerdabbelt@google.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Niklas Schnelle <schnelle@linux.ibm.com> Cc: Pierre Morel <pmorel@linux.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Yury Norov
|
2cc7b6a44a |
lib: add fast path for find_first_*_bit() and find_last_bit()
Similarly to bitmap functions, users would benefit if we'll handle a case of small-size bitmaps that fit into a single word. While here, move the find_last_bit() declaration to bitops/find.h where other find_*_bit() functions sit. Link: https://lkml.kernel.org/r/20210401003153.97325-11-yury.norov@gmail.com Signed-off-by: Yury Norov <yury.norov@gmail.com> Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Alexey Klimov <aklimov@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Sterba <dsterba@suse.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Jianpeng Ma <jianpeng.ma@intel.com> Cc: Joe Perches <joe@perches.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Rich Felker <dalias@libc.org> Cc: Stefano Brivio <sbrivio@redhat.com> Cc: Wei Yang <richard.weiyang@linux.alibaba.com> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com> Cc: Yoshinori Sato <ysato@users.osdn.me> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Yury Norov
|
277a20a498 |
lib: add fast path for find_next_*_bit()
Similarly to bitmap functions, find_next_*_bit() users will benefit if we'll handle a case of bitmaps that fit into a single word inline. In the very best case, the compiler may replace a function call with a few instructions. This is the quite typical find_next_bit() user: unsigned int cpumask_next(int n, const struct cpumask *srcp) { /* -1 is a legal arg here. */ if (n != -1) cpumask_check(n); return find_next_bit(cpumask_bits(srcp), nr_cpumask_bits, n + 1); } EXPORT_SYMBOL(cpumask_next); Currently, on ARM64 the generated code looks like this: 0000000000000000 <cpumask_next>: 0: a9bf7bfd stp x29, x30, [sp, #-16]! 4: 11000402 add w2, w0, #0x1 8: aa0103e0 mov x0, x1 c: d2800401 mov x1, #0x40 // #64 10: 910003fd mov x29, sp 14: 93407c42 sxtw x2, w2 18: 94000000 bl 0 <find_next_bit> 1c: a8c17bfd ldp x29, x30, [sp], #16 20: d65f03c0 ret 24: d503201f nop After applying this patch: 0000000000000140 <cpumask_next>: 140: 11000400 add w0, w0, #0x1 144: 93407c00 sxtw x0, w0 148: f100fc1f cmp x0, #0x3f 14c: 54000168 b.hi 178 <cpumask_next+0x38> // b.pmore 150: f9400023 ldr x3, [x1] 154: 92800001 mov x1, #0xffffffffffffffff // #-1 158: 9ac02020 lsl x0, x1, x0 15c: 52800802 mov w2, #0x40 // #64 160: 8a030001 and x1, x0, x3 164: dac00020 rbit x0, x1 168: f100003f cmp x1, #0x0 16c: dac01000 clz x0, x0 170: 1a800040 csel w0, w2, w0, eq // eq = none 174: d65f03c0 ret 178: 52800800 mov w0, #0x40 // #64 17c: d65f03c0 ret find_next_bit() call is replaced with 6 instructions. find_next_bit() itself is 41 instructions plus function call overhead. Despite inlining, the scripts/bloat-o-meter report smaller .text size after applying the series: add/remove: 11/9 grow/shrink: 233/176 up/down: 5780/-6768 (-988) Link: https://lkml.kernel.org/r/20210401003153.97325-10-yury.norov@gmail.com Signed-off-by: Yury Norov <yury.norov@gmail.com> Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Alexey Klimov <aklimov@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Sterba <dsterba@suse.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Jianpeng Ma <jianpeng.ma@intel.com> Cc: Joe Perches <joe@perches.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Rich Felker <dalias@libc.org> Cc: Stefano Brivio <sbrivio@redhat.com> Cc: Wei Yang <richard.weiyang@linux.alibaba.com> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com> Cc: Yoshinori Sato <ysato@users.osdn.me> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Yury Norov
|
5c88af59f9 |
lib: inline _find_next_bit() wrappers
lib/find_bit.c declares five single-line wrappers for _find_next_bit(). We may turn those wrappers to inline functions. It eliminates unneeded function calls and opens room for compile-time optimizations. Link: https://lkml.kernel.org/r/20210401003153.97325-8-yury.norov@gmail.com Signed-off-by: Yury Norov <yury.norov@gmail.com> Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Alexey Klimov <aklimov@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Sterba <dsterba@suse.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Jianpeng Ma <jianpeng.ma@intel.com> Cc: Joe Perches <joe@perches.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Rich Felker <dalias@libc.org> Cc: Stefano Brivio <sbrivio@redhat.com> Cc: Wei Yang <richard.weiyang@linux.alibaba.com> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com> Cc: Yoshinori Sato <ysato@users.osdn.me> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Yury Norov
|
586eaebea5 |
lib: extend the scope of small_const_nbits() macro
find_bit would also benefit from small_const_nbits() optimizations. The detailed comment is provided by Rasmus Villemoes. Link: https://lkml.kernel.org/r/20210401003153.97325-6-yury.norov@gmail.com Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Yury Norov <yury.norov@gmail.com> Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Alexey Klimov <aklimov@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Sterba <dsterba@suse.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Jianpeng Ma <jianpeng.ma@intel.com> Cc: Joe Perches <joe@perches.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Rich Felker <dalias@libc.org> Cc: Stefano Brivio <sbrivio@redhat.com> Cc: Wei Yang <richard.weiyang@linux.alibaba.com> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com> Cc: Yoshinori Sato <ysato@users.osdn.me> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Linus Torvalds
|
77d51337d6 |
- removed get_fs/set_fs
- removed broken/unmaintained MIPS KVM trap and emulate support - added support for Loongson-2K1000 - fixes and cleanups -----BEGIN PGP SIGNATURE----- iQJOBAABCAA4FiEEbt46xwy6kEcDOXoUeZbBVTGwZHAFAmCJS6oaHHRzYm9nZW5k QGFscGhhLmZyYW5rZW4uZGUACgkQeZbBVTGwZHDnbBAAnfVnVgjRZZ1y+oX9siFk xrQUVJMxEl02272yptB6VtWOLhTnFnJ2xNyjb4EcoCbTiBReSNQ8ee4WYYdCgSXh soDW6wYrlpcZau5sRg72xybmmYo4aUEh3D9PWNpCaDXFaSpnbXv28ccCTb0yLvCL 4s72wl+hLGAygJMlA6gkQ3mN3XblRk+ci1MLQOr4WpxCmWx0ozKKnHnlt21rw26w kokJRsqKAOgzzB5LIBgFBdlNKXMd+Xq8BhDXvilNbH2+LtrNIIbyJDPReZBkkO/T JWGbcNJMox/lBzqtM+eIMvuf/2QHtUAB4xXSAH+oAno6PlV0S73Oo5E+tI++ax9j WmdN3nwjhpEmwyovZwZtl+b0P14NXXAYKYOYClaRn3dFxEXnS7Fiq+EyGuOEQYBS oTa2VXQrFZfpN55wtdwmXdwWDwNuE8UtEbkSpblyTw9HQqh3jnl8xKGnaWzw7HMN D1yycBxMzuOrMiY5UBcfuzdU1K9Dgxn+ur8IfraXjjcEmZB+1TEB74/GCLK1/UJM lBUrW9ZrE5e3COA/gqPq5ZQf4W9cp8xLBMWWXxnMSBEErpePDtt3EZP2H62sK+3a wuyvEwRuiFskeUi/Tr7t89u4oXrcIZ7Q3bM3LKj3IWbsk/Znk8X03GCF86QU27zP wlrVT2ef0/8DHEI7btraCb4= =w/c4 -----END PGP SIGNATURE----- Merge tag 'mips_5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS updates from Thomas Bogendoerfer: - removed get_fs/set_fs - removed broken/unmaintained MIPS KVM trap and emulate support - added support for Loongson-2K1000 - fixes and cleanups * tag 'mips_5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (107 commits) MIPS: BCM63XX: Use BUG_ON instead of condition followed by BUG. MIPS: select ARCH_KEEP_MEMBLOCK unconditionally mips: Do not include hi and lo in clobber list for R6 MIPS:DTS:Correct the license for Loongson-2K MIPS:DTS:Fix label name and interrupt number of ohci for Loongson-2K MIPS: Avoid handcoded DIVU in `__div64_32' altogether lib/math/test_div64: Correct the spelling of "dividend" lib/math/test_div64: Fix error message formatting mips/bootinfo:correct some comments of fw_arg MIPS: Avoid DIVU in `__div64_32' is result would be zero MIPS: Reinstate platform `__div64_32' handler div64: Correct inline documentation for `do_div' lib/math: Add a `do_div' test module MIPS: Makefile: Replace -pg with CC_FLAGS_FTRACE MIPS: pci-legacy: revert "use generic pci_enable_resources" MIPS: Loongson64: Add kexec/kdump support MIPS: pci-legacy: use generic pci_enable_resources MIPS: pci-legacy: remove busn_resource field MIPS: pci-legacy: remove redundant info messages MIPS: pci-legacy: stop using of_pci_range_to_resource ... |
||
Linus Torvalds
|
57fa2369ab |
CFI on arm64 series for v5.13-rc1
- Clean up list_sort prototypes (Sami Tolvanen) - Introduce CONFIG_CFI_CLANG for arm64 (Sami Tolvanen) -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmCHCR8ACgkQiXL039xt wCZyFQ//fnUZaXR2K354zDyW6CJljMf+d94RF6rH+J6eMTH2/HXa5v0iJokwABLf ussP6qF4k5wtmI22Gm9A5Zc3e4iiry5pC0jOdk0mk4gzWwFN9MdgNxJZIGA3xqhS bsBK4AGrVKjtZl48G1/ZxJuNDeJhVp6GNK2n6/Gl4rZF6R7D/Upz0XelyJRdDpcM HIGma7jZl6xfGU0mdWCzpOGK1zdMca1WVs7A4YuurSbLn5PZJrcNVWLouDqt/Si2 AduSri1gyPClicgvqWjMOzhUpuw/nJtBLRl1x1EsWk/KSZ1/uNVjlewfzdN4fZrr zbtFr2gLubYLK6JOX7/LqoHlOTgE3tYLL+WIVN75DsOGZBKgHhmebTmWLyqzV0SL oqcyM5d3ucC6msdtAK5Fv4MSp8rpjqlK1Ha4SGRT6kC2wut7AhZ3KD7eyRIz8mV9 Sa9mhignGFJnTEUp+LSbYdrAudgSKxB40WyXPmswAXX4VJFRD4ONrrcAON/SzkUT Hw/JdFRCKkJjgwNQjIQoZcUNMTbFz2PlNIEnjJWm38YImQKQlCb2mXaZKCwBkf45 aheCZk17eKoxTCXFMd+KxlyNEtS2yBfq/PpZgvw7GW/pfFbWUg1+2O41LnihIe5v zu0hN1wNCQqgfxiMZqX1OTb9C/2vybzGsXILt+9nppjZ8EBU7iU= =wU6U -----END PGP SIGNATURE----- Merge tag 'cfi-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull CFI on arm64 support from Kees Cook: "This builds on last cycle's LTO work, and allows the arm64 kernels to be built with Clang's Control Flow Integrity feature. This feature has happily lived in Android kernels for almost 3 years[1], so I'm excited to have it ready for upstream. The wide diffstat is mainly due to the treewide fixing of mismatched list_sort prototypes. Other things in core kernel are to address various CFI corner cases. The largest code portion is the CFI runtime implementation itself (which will be shared by all architectures implementing support for CFI). The arm64 pieces are Acked by arm64 maintainers rather than coming through the arm64 tree since carrying this tree over there was going to be awkward. CFI support for x86 is still under development, but is pretty close. There are a handful of corner cases on x86 that need some improvements to Clang and objtool, but otherwise works well. Summary: - Clean up list_sort prototypes (Sami Tolvanen) - Introduce CONFIG_CFI_CLANG for arm64 (Sami Tolvanen)" * tag 'cfi-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: arm64: allow CONFIG_CFI_CLANG to be selected KVM: arm64: Disable CFI for nVHE arm64: ftrace: use function_nocfi for ftrace_call arm64: add __nocfi to __apply_alternatives arm64: add __nocfi to functions that jump to a physical address arm64: use function_nocfi with __pa_symbol arm64: implement function_nocfi psci: use function_nocfi for cpu_resume lkdtm: use function_nocfi treewide: Change list_sort to use const pointers bpf: disable CFI in dispatcher functions kallsyms: strip ThinLTO hashes from static functions kthread: use WARN_ON_FUNCTION_MISMATCH workqueue: use WARN_ON_FUNCTION_MISMATCH module: ensure __cfi_check alignment mm: add generic function_nocfi macro cfi: add __cficanonical add support for Clang CFI |
||
Linus Torvalds
|
0c85556318 |
ARM: platform support for Apple M1
The Apple M1 is the processor used it all current generation Apple
Macintosh computers. Support for this platform so far is rudimentary,
but it boots and can use framebuffer and serial console over a special
USB cable.
Support for several essential on-chip devices (USB, PCIe, IOMMU, NVMe)
is work in progress but was not ready in time.
A very detailed description of what works is in the merge commit
and on the AsahiLinux wiki.
Link: https://lore.kernel.org/linux-arm-kernel/bdb18e9f-fcd7-1e31-2224-19c0e5090706@marcan.st/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
-----BEGIN PGP SIGNATURE-----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=pBZy
-----END PGP SIGNATURE-----
Merge tag 'arm-apple-m1-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM Apple M1 platform support from Arnd Bergmann:
"The Apple M1 is the processor used it all current generation Apple
Macintosh computers. Support for this platform so far is rudimentary,
but it boots and can use framebuffer and serial console over a special
USB cable.
Support for several essential on-chip devices (USB, PCIe, IOMMU, NVMe)
is work in progress but was not ready in time.
A very detailed description of what works is in the commit message of
commit
|
||
Maciej W. Rozycki
|
f287583238 |
div64: Correct inline documentation for `do_div'
Correct inline documentation for `do_div', which is a function-like macro the `n' parameter of which has the semantics of a C++ reference: it is both read and written in the context of the caller without an explicit dereference such as with a pointer. In the C programming language it has no equivalent for proper functions, in terms of which the documentation expresses the semantics of `do_div', but substituting a pointer in documentation is misleading, and using the C++ notation should at least raise the reader's attention and encourage to seek explanation even if the C++ semantics is not readily understood. While at it observe that "semantics" is an uncountable noun, so refer to it with a singular rather than plural verb. Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> |
||
Joseph Salisbury
|
753ed9c95c |
drivers: hv: Create a consistent pattern for checking Hyper-V hypercall status
There is not a consistent pattern for checking Hyper-V hypercall status. Existing code uses a number of variants. The variants work, but a consistent pattern would improve the readability of the code, and be more conformant to what the Hyper-V TLFS says about hypercall status. Implemented new helper functions hv_result(), hv_result_success(), and hv_repcomp(). Changed the places where hv_do_hypercall() and related variants are used to use the helper functions. Signed-off-by: Joseph Salisbury <joseph.salisbury@microsoft.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1618620183-9967-2-git-send-email-joseph.salisbury@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Joseph Salisbury
|
6523592cee |
x86/hyperv: Move hv_do_rep_hypercall to asm-generic
This patch makes no functional changes. It simply moves hv_do_rep_hypercall() out of arch/x86/include/asm/mshyperv.h and into asm-generic/mshyperv.h hv_do_rep_hypercall() is architecture independent, so it makes sense that it should be in the architecture independent mshyperv.h, not in the x86-specific mshyperv.h. This is done in preperation for a follow up patch which creates a consistent pattern for checking Hyper-V hypercall status. Signed-off-by: Joseph Salisbury <joseph.salisbury@microsoft.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1618620183-9967-1-git-send-email-joseph.salisbury@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Hector Martin
|
ea96292838 |
asm-generic/io.h: Unbork ioremap_np() declaration
It accidentally slipped into the #ifdef for ioremap_uc(). Signed-off-by: Hector Martin <marcan@marcan.st> Link: https://lore.kernel.org/r/20210409052038.58925-1-marcan@marcan.st' Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
Sami Tolvanen
|
cf68fffb66 |
add support for Clang CFI
This change adds support for Clang’s forward-edge Control Flow Integrity (CFI) checking. With CONFIG_CFI_CLANG, the compiler injects a runtime check before each indirect function call to ensure the target is a valid function with the correct static type. This restricts possible call targets and makes it more difficult for an attacker to exploit bugs that allow the modification of stored function pointers. For more details, see: https://clang.llvm.org/docs/ControlFlowIntegrity.html Clang requires CONFIG_LTO_CLANG to be enabled with CFI to gain visibility to possible call targets. Kernel modules are supported with Clang’s cross-DSO CFI mode, which allows checking between independently compiled components. With CFI enabled, the compiler injects a __cfi_check() function into the kernel and each module for validating local call targets. For cross-module calls that cannot be validated locally, the compiler calls the global __cfi_slowpath_diag() function, which determines the target module and calls the correct __cfi_check() function. This patch includes a slowpath implementation that uses __module_address() to resolve call targets, and with CONFIG_CFI_CLANG_SHADOW enabled, a shadow map that speeds up module look-ups by ~3x. Clang implements indirect call checking using jump tables and offers two methods of generating them. With canonical jump tables, the compiler renames each address-taken function to <function>.cfi and points the original symbol to a jump table entry, which passes __cfi_check() validation. This isn’t compatible with stand-alone assembly code, which the compiler doesn’t instrument, and would result in indirect calls to assembly code to fail. Therefore, we default to using non-canonical jump tables instead, where the compiler generates a local jump table entry <function>.cfi_jt for each address-taken function, and replaces all references to the function with the address of the jump table entry. Note that because non-canonical jump table addresses are local to each component, they break cross-module function address equality. Specifically, the address of a global function will be different in each module, as it's replaced with the address of a local jump table entry. If this address is passed to a different module, it won’t match the address of the same function taken there. This may break code that relies on comparing addresses passed from other components. CFI checking can be disabled in a function with the __nocfi attribute. Additionally, CFI can be disabled for an entire compilation unit by filtering out CC_FLAGS_CFI. By default, CFI failures result in a kernel panic to stop a potential exploit. CONFIG_CFI_PERMISSIVE enables a permissive mode, where the kernel prints out a rate-limited warning instead, and allows execution to continue. This option is helpful for locating type mismatches, but should only be enabled during development. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210408182843.1754385-2-samitolvanen@google.com |
||
Hector Martin
|
7c566bb5e4 |
asm-generic/io.h: Add a non-posted variant of ioremap()
ARM64 currently defaults to posted MMIO (nGnRE), but some devices require the use of non-posted MMIO (nGnRnE). Introduce a new ioremap() variant to handle this case. ioremap_np() returns NULL on arches that do not implement this variant. sparc64 is the only architecture that needs to be touched directly, because it includes neither of the generic io.h or iomap.h headers. This adds the IORESOURCE_MEM_NONPOSTED flag, which maps to this variant and marks a given resource as requiring non-posted mappings. This is implemented in the resource system because it is a SoC-level requirement, so existing drivers do not need special-case code to pick this ioremap variant. Then this is implemented in devres by introducing devm_ioremap_np(), and making devm_ioremap_resource() automatically select this variant when the resource has the IORESOURCE_MEM_NONPOSTED flag set. Acked-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Hector Martin <marcan@marcan.st> |
||
Sunil Muthuswamy
|
6dc2a774cb |
x86/Hyper-V: Support for free page reporting
Linux has support for free page reporting now (
|
||
Michael Kelley
|
a620bbaa35 |
asm-generic/hyperv: Add missing function prototypes per -W1 warnings
Add two function prototypes for -W1 warnings generated by the kernel test robot. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1615402069-39462-1-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Michael Kelley
|
ec866be6ec |
clocksource/drivers/hyper-v: Move handling of STIMER0 interrupts
STIMER0 interrupts are most naturally modeled as per-cpu IRQs. But because x86/x64 doesn't have per-cpu IRQs, the core STIMER0 interrupt handling machinery is done in code under arch/x86 and Linux IRQs are not used. Adding support for ARM64 means adding equivalent code using per-cpu IRQs under arch/arm64. A better model is to treat per-cpu IRQs as the normal path (which it is for modern architectures), and the x86/x64 path as the exception. Do this by incorporating standard Linux per-cpu IRQ allocation into the main SITMER0 driver code, and bypass it in the x86/x64 exception case. For x86/x64, special case code is retained under arch/x86, but no STIMER0 interrupt handling code is needed under arch/arm64. No functional change. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/1614721102-2241-11-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Michael Kelley
|
d608715d47 |
Drivers: hv: vmbus: Move handling of VMbus interrupts
VMbus interrupts are most naturally modelled as per-cpu IRQs. But because x86/x64 doesn't have per-cpu IRQs, the core VMbus interrupt handling machinery is done in code under arch/x86 and Linux IRQs are not used. Adding support for ARM64 means adding equivalent code using per-cpu IRQs under arch/arm64. A better model is to treat per-cpu IRQs as the normal path (which it is for modern architectures), and the x86/x64 path as the exception. Do this by incorporating standard Linux per-cpu IRQ allocation into the main VMbus driver, and bypassing it in the x86/x64 exception case. For x86/x64, special case code is retained under arch/x86, but no VMbus interrupt handling code is needed under arch/arm64. No functional change. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Link: https://lore.kernel.org/r/1614721102-2241-7-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Michael Kelley
|
b548a77427 |
Drivers: hv: vmbus: Move hyperv_report_panic_msg to arch neutral code
With the new Hyper-V MSR set function, hyperv_report_panic_msg() can be architecture neutral, so move it out from under arch/x86 and merge into hv_kmsg_dump(). This move also avoids needing a separate implementation under arch/arm64. No functional change. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Link: https://lore.kernel.org/r/1614721102-2241-5-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Michael Kelley
|
f3c5e63c36 |
Drivers: hv: Redo Hyper-V synthetic MSR get/set functions
Current code defines a separate get and set macro for each Hyper-V synthetic MSR used by the VMbus driver. Furthermore, the get macro can't be converted to a standard function because the second argument is modified in place, which is somewhat bad form. Redo this by providing a single get and a single set function that take a parameter specifying the MSR to be operated on. Fixup usage of the get function. Calling locations are no more complex than before, but the code under arch/x86 and the upcoming code under arch/arm64 is significantly simplified. Also standardize the names of Hyper-V synthetic MSRs that are architecture neutral. But keep the old x86-specific names as aliases that can be removed later when all references (particularly in KVM code) have been cleaned up in a separate patch series. No functional change. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Link: https://lore.kernel.org/r/1614721102-2241-4-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Michael Kelley
|
5e4e6ddf8d |
x86/hyper-v: Move hv_message_type to architecture neutral module
The definition of enum hv_message_type includes arch neutral and x86/x64-specific values. Ideally there would be a way to put the arch neutral values in an arch neutral module, and the arch specific values in an arch specific module. But C doesn't provide a way to extend enum types. As a compromise, move the entire definition into an arch neutral module, to avoid duplicating the arch neutral values for x86/x64 and for ARM64. No functional change. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Link: https://lore.kernel.org/r/1614721102-2241-3-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Michael Kelley
|
ca48739e59 |
Drivers: hv: vmbus: Move Hyper-V page allocator to arch neutral code
The Hyper-V page allocator functions are implemented in an architecture neutral way. Move them into the architecture neutral VMbus module so a separate implementation for ARM64 is not needed. No functional change. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Link: https://lore.kernel.org/r/1614721102-2241-2-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Linus Torvalds
|
8b83369ddc |
RISC-V Patches for the 5.12 Merge Window
I have a handful of new RISC-V related patches for this merge window: * A check to ensure drivers are properly using uaccess. This isn't manifesting with any of the drivers I'm currently using, but may catch errors in new drivers. * Some preliminary support for the FU740, along with the HiFive Unleashed it will appear on. * NUMA support for RISC-V, which involves making the arm64 code generic. * Support for kasan on the vmalloc region. * A handful of new drivers for the Kendryte K210, along with the DT plumbing required to boot on a handful of K210-based boards. * Support for allocating ASIDs. * Preliminary support for kernels larger than 128MiB. * Various other improvements to our KASAN support, including the utilization of huge pages when allocating the KASAN regions. We may have already found a bug with the KASAN_VMALLOC code, but it's passing my tests. There's a fix in the works, but that will probably miss the merge window. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmA4hXATHHBhbG1lckBk YWJiZWx0LmNvbQAKCRAuExnzX7sYifryD/0SfXGOfj93Cxq7I7AYhhzCN7lJ5jvv iEQScTlPqU9nfvYodo4EDq0fp+5LIPpTL/XBHtqVjzv0FqRNa28Ea0K7kO8HuXc4 BaUd0m/DqyB4Gfgm4qjc5bDneQ1ZYxVXprYERWNQ5Fj+tdWhaQGOW64N/TVodjjj NgJtTqbIAcjJqjUtttM8TZN5U1TgwLo+KCqw3iYW12lV1YKBBuvrwvSdD6jnFdIQ AzG/wRGZhxLoFxgBB/NEsZxDoSd6ztiwxLhS9lX4okZVsryyIdOE70Q/MflfiTlU xE+AdxQXTMUiiqYSmHeDD6PDb57GT/K3hnjI1yP+lIZpbInsi29JKow1qjyYjfHl 9cSSKYCIXHL7jKU6pgt34G1O5N5+fgqHQhNbfKvlrQ2UPlfs/tWdKHpFIP/z9Jlr 0vCAou7NSEB9zZGqzO63uBLXoN8yfL8FT3uRnnRvoRpfpex5dQX2QqPLQ7327D7N GUG31nd1PHTJPdxJ1cI4SO24PqPpWDWY9uaea+0jv7ivGClVadZPco/S3ZKloguT lazYUvyA4oRrSAyln785Rd8vg4CinqTxMtIyZbRMbNkgzVQARi9a8rjvu4n9qms2 2wlXDFi8nR8B4ih5n79dSiiLM9ay9GJDxMcf9VxIxSAYZV2fJALnpK6gV2fzRBUe +k/uv8BIsFmlwQ== =CutX -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-5.12-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: "A handful of new RISC-V related patches for this merge window: - A check to ensure drivers are properly using uaccess. This isn't manifesting with any of the drivers I'm currently using, but may catch errors in new drivers. - Some preliminary support for the FU740, along with the HiFive Unleashed it will appear on. - NUMA support for RISC-V, which involves making the arm64 code generic. - Support for kasan on the vmalloc region. - A handful of new drivers for the Kendryte K210, along with the DT plumbing required to boot on a handful of K210-based boards. - Support for allocating ASIDs. - Preliminary support for kernels larger than 128MiB. - Various other improvements to our KASAN support, including the utilization of huge pages when allocating the KASAN regions. We may have already found a bug with the KASAN_VMALLOC code, but it's passing my tests. There's a fix in the works, but that will probably miss the merge window. * tag 'riscv-for-linus-5.12-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (75 commits) riscv: Improve kasan population by using hugepages when possible riscv: Improve kasan population function riscv: Use KASAN_SHADOW_INIT define for kasan memory initialization riscv: Improve kasan definitions riscv: Get rid of MAX_EARLY_MAPPING_SIZE soc: canaan: Sort the Makefile alphabetically riscv: Disable KSAN_SANITIZE for vDSO riscv: Remove unnecessary declaration riscv: Add Canaan Kendryte K210 SD card defconfig riscv: Update Canaan Kendryte K210 defconfig riscv: Add Kendryte KD233 board device tree riscv: Add SiPeed MAIXDUINO board device tree riscv: Add SiPeed MAIX GO board device tree riscv: Add SiPeed MAIX DOCK board device tree riscv: Add SiPeed MAIX BiT board device tree riscv: Update Canaan Kendryte K210 device tree dt-bindings: add resets property to dw-apb-timer dt-bindings: fix sifive gpio properties dt-bindings: update sifive uart compatible string dt-bindings: update sifive clint compatible string ... |
||
Linus Torvalds
|
2bd3f4eeb3 |
orphan-handling fix for v5.12-rc1
- Define SANTIZER_DISCARDS with CONFIG_GCOV_KERNEL=y (Nathan Chancellor) -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmA4FAEACgkQiXL039xt wCZqSQ//RLjz6rY03RdEMYY6oINrQQkZz82bVgJ8yxACErlmzXTOxf0UvVk+OgCk x99e7X1INSNj6mJDPe60cu+5bwZA1etx2aWAuE2BYVWm8AyHFK+A51qjXkH6GQEk w6Fv7LEgGItFzBJfEnpsDLRZ9RLjrW6dnJ94weIODcvfaf9Nkh/igjegy4X9GSU9 n2Pb3u02jCeBlAJY3ChLHIt/uvrMqhwN0P0qQLGfNUGrLevOEJTBacgMWlYWLE1I KmLlDaRBS43zPsbpvkFykVHGvW7ISmxNmrUstCa2UPVanEOC9XhvnPRiNz2pqy1i aFkUkvf5b+JiHurLMJL9DrBID/tRQreaUMex93kAQSB6x0KwfP8047Zv0MnbXzxb /NlwggGUUDuT8I3AnhyxeZ0o37XnTj1Gcb1mdPYVWJhSs2D2N1wwA5U8ySrS5BXc xo0/n4LzJ6oAPPNKxZRJxx03zlWafx52JruKAXkuqrqgf4BTYHTjrBsCGLewNAwC D1oZB98CLSY9GHoBnwU55+CeBflXrUN3Msgsw7S6JG/keQMEEIFpzLmxwIss1hhi 503L0O9ZDRH9fddkFJ7AYtz5PDcgwbipSbN7+4HMUlbrRIbBrqaR7Q9F82Aw1hxe peih0G5izT5EM8bsrB/DSegj4IQD9wUr/NB4CJb24kHTgV0G9Ls= =A/Ky -----END PGP SIGNATURE----- Merge tag 'orphan-handling-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull orphan handling fix from Kees Cook: "Another case of bogus .eh_frame emission was noticed under CONFIG_GCOV_KERNEL=y. Summary: - Define SANITIZER_DISCARDS with CONFIG_GCOV_KERNEL=y (Nathan Chancellor)" * tag 'orphan-handling-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: vmlinux.lds.h: Define SANITIZER_DISCARDS with CONFIG_GCOV_KERNEL=y |
||
Nathan Chancellor
|
f5b6a74d9c |
vmlinux.lds.h: Define SANTIZER_DISCARDS with CONFIG_GCOV_KERNEL=y
clang produces .eh_frame sections when CONFIG_GCOV_KERNEL is enabled, even when -fno-asynchronous-unwind-tables is in KBUILD_CFLAGS: $ make CC=clang vmlinux ... ld: warning: orphan section `.eh_frame' from `init/main.o' being placed in section `.eh_frame' ld: warning: orphan section `.eh_frame' from `init/version.o' being placed in section `.eh_frame' ld: warning: orphan section `.eh_frame' from `init/do_mounts.o' being placed in section `.eh_frame' ld: warning: orphan section `.eh_frame' from `init/do_mounts_initrd.o' being placed in section `.eh_frame' ld: warning: orphan section `.eh_frame' from `init/initramfs.o' being placed in section `.eh_frame' ld: warning: orphan section `.eh_frame' from `init/calibrate.o' being placed in section `.eh_frame' ld: warning: orphan section `.eh_frame' from `init/init_task.o' being placed in section `.eh_frame' ... $ rg "GCOV_KERNEL|GCOV_PROFILE_ALL" .config CONFIG_GCOV_KERNEL=y CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y CONFIG_GCOV_PROFILE_ALL=y This was already handled for a couple of other options in commit |
||
Linus Torvalds
|
a6525b9999 |
- added n64 block driver
- fix for ubsan warnings - fix for bcm63xx platform - update of linux-mips mailinglist -----BEGIN PGP SIGNATURE----- iQJOBAABCAA4FiEEbt46xwy6kEcDOXoUeZbBVTGwZHAFAmA3+WoaHHRzYm9nZW5k QGFscGhhLmZyYW5rZW4uZGUACgkQeZbBVTGwZHB+mw/9HVN4BVGO6PM62ZH/WOYc M6G8i0Bfa/ZO0XLiFMMUVlRtDkbXWaNbNIzO6f3ud6Me1+D3aLW8j4yhhVs+yki0 SuspDPDAwtnmsE1DMnr21eL+p5VSaMhdCLdL2pAWErLHBy3oXLSJ1kajhuMs+vVp 2Zq7k1rjJdiYAULep21VDi0CQfTTudFOCkJs0AqbSA6tmPiFZXp8Y/rDOHAu2wro 6iNd4qkh9ASpFgWWWBVuPmsKbTNAEaYIcjGMMm692sraKYOKxqeaCfwyG2odMNFk If8tnFJgRg+wdS+ZUnX/R9cxrSrZ/QeoUOl6qGUnJWodhlGpm/nSjYSYm5mS7mVX FPnG2NWjw6pvhf3reupyS4JqcdLJ9Ldk8KJZe8rLXIcrgd90kuMj0ahoc8NY04rs /ZMVLWZ72XgFvEJeCWdXWvVf21gi3F0MGFJiGPHXTk1leDhNLRFR+ExaEPRjt1HK KENlBNuXzO790EyfDe/Z7Abq3r4wf17RmXHcoU1FLSRxBtIT8gwF2E4jZB6gzlh7 WaXVHAkxyP0AO11Zo6h/eWaeeulH8lnPSKVvDL4px/apsvnlE56IPClBAMT3Fhhy ZEiFIiT7eJzs4reDnB9PxxySR4v79xQTdv9jRi1f3wVRQiNaqkGdcrAaj9SVeck5 FsD/Desev/Hu1+maUlY221g= =KT2b -----END PGP SIGNATURE----- Merge tag 'mips_5.12_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull more MIPS updates from Thomas Bogendoerfer: - added n64 block driver - fix for ubsan warnings - fix for bcm63xx platform - update of linux-mips mailinglist * tag 'mips_5.12_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: arch: mips: update references to current linux-mips list mips: bmips: init clocks earlier vmlinux.lds.h: catch even more instrumentation symbols into .data n64: store dev instance into disk private data n64: cleanup n64cart_probe() n64: cosmetics changes n64: remove curly brackets n64: use sector SECTOR_SHIFT instead 512 n64: use enums for reg n64: move module param at the top n64: move module info at the end n64: use pr_fmt to avoid duplicate string block: Add n64 cart driver |
||
Linus Torvalds
|
6fbd6cf85a |
Kbuild updates for v5.12
- Fix false-positive build warnings for ARCH=ia64 builds - Optimize dictionary size for module compression with xz - Check the compiler and linker versions in Kconfig - Fix misuse of extra-y - Support DWARF v5 debug info - Clamp SUBLEVEL to 255 because stable releases 4.4.x and 4.9.x exceeded the limit - Add generic syscall{tbl,hdr}.sh for cleanups across arches - Minor cleanups of genksyms - Minor cleanups of Kconfig -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAmA3zhgVHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsG0C4P/A5hUNFdkYI+EffAWZiHn69t0S8j M1GQkZildKu/yOfm6hp3mNwgHmYgw0aAuch1htkJuv+5rXRtoK77yw0xKbUqNHyO VqkJWQPVUXJbWIDiu332NaETHbFTWCnPZKGmzcbVOBHbYsXUJPp17gROQ9ke0fQN Ae6OV5WINhoS8UnjESWb3qOO87MdQTZ+9mP+NMnVh4kV1SUeMAXLFwFll66KZTkj GXB330N3p9L0wQVljhXpQ/YPOd76wJNPhJWJ9+hKLFbWsedovzlHb+duprh1z1xe 7LLaq9dEbXxe1Uz0qmK76lupXxilYMyUupTW9HIYtIsY8br8DIoBOG0bn46LVnuL /m+UQNfUFCYYePT7iZQNNc1DISQJrxme3bjq0PJzZTDukNnHJVahnj9x4RoNaF8j Dc+JME0r2i8Ccp28vgmaRgzvSsb8Xtw5icwRdwzIpyt1ubs/+tkd/GSaGzQo30Q8 m8y1WOjovHNX7OGnOaOWBGoQAX/2k/VHeAediMsPqWUoOxwsLHYxG/4KtgwbJ5vc gu/Fyk1GRDklZPpLdYFVvz8TGnqSDogJgF+7WolJ6YvPGAUIDAfd5Ky2sWayddlm wchc3sKDVyh3lov23h0WQVTvLO9xl+NZ6THxoAGdYeQ0DUu5OxwH8qje/UpWuo1a DchhNN+g5pa6n56Z =sLxb -----END PGP SIGNATURE----- Merge tag 'kbuild-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Fix false-positive build warnings for ARCH=ia64 builds - Optimize dictionary size for module compression with xz - Check the compiler and linker versions in Kconfig - Fix misuse of extra-y - Support DWARF v5 debug info - Clamp SUBLEVEL to 255 because stable releases 4.4.x and 4.9.x exceeded the limit - Add generic syscall{tbl,hdr}.sh for cleanups across arches - Minor cleanups of genksyms - Minor cleanups of Kconfig * tag 'kbuild-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (38 commits) initramfs: Remove redundant dependency of RD_ZSTD on BLK_DEV_INITRD kbuild: remove deprecated 'always' and 'hostprogs-y/m' kbuild: parse C= and M= before changing the working directory kbuild: reuse this-makefile to define abs_srctree kconfig: unify rule of config, menuconfig, nconfig, gconfig, xconfig kconfig: omit --oldaskconfig option for 'make config' kconfig: fix 'invalid option' for help option kconfig: remove dead code in conf_askvalue() kconfig: clean up nested if-conditionals in check_conf() kconfig: Remove duplicate call to sym_get_string_value() Makefile: Remove # characters from compiler string Makefile: reuse CC_VERSION_TEXT kbuild: check the minimum linker version in Kconfig kbuild: remove ld-version macro scripts: add generic syscallhdr.sh scripts: add generic syscalltbl.sh arch: syscalls: remove $(srctree)/ prefix from syscall tables arch: syscalls: add missing FORCE and fix 'targets' to make if_changed work gen_compile_commands: prune some directories kbuild: simplify access to the kernel's version ... |
||
Linus Torvalds
|
29c395c77a |
Rework of the X86 irq stack handling:
The irq stack switching was moved out of the ASM entry code in course of the entry code consolidation. It ended up being suboptimal in various ways. - Make the stack switching inline so the stackpointer manipulation is not longer at an easy to find place. - Get rid of the unnecessary indirect call. - Avoid the double stack switching in interrupt return and reuse the interrupt stack for softirq handling. - A objtool fix for CONFIG_FRAME_POINTER=y builds where it got confused about the stack pointer manipulation. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmA21OcTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoaX0D/9S0ud6oqbsIvI8LwhvYub63a2cjKP9 liHAJ7xwMYYVwzf0skwsPb/QE6+onCzdq0upJkgG/gEYm2KbiaMWZ4GgHdj0O7ER qXKJONDd36AGxSEdaVzLY5kPuD/mkomGk5QdaZaTmjruthkNzg4y/N2wXUBIMZR0 FdpSpp5fGspSZCn/DXDx6FjClwpLI53VclvDs6DcZ2DIBA0K+F/cSLb1UQoDLE1U hxGeuNa+GhKeeZ5C+q5giho1+ukbwtjMW9WnKHAVNiStjm0uzdqq7ERGi/REvkcB LY62u5uOSW1zIBMmzUjDDQEqvypB0iFxFCpN8g9sieZjA0zkaUioRTQyR+YIQ8Cp l8LLir0dVQivR1bHghHDKQJUpdw/4zvDj4mMH10XHqbcOtIxJDOJHC5D00ridsAz OK0RlbAJBl9FTdLNfdVReBCoehYAO8oefeyMAG12nZeSh5XVUWl238rvzmzIYNhG cEtkSx2wIUNEA+uSuI+xvfmwpxL7voTGvqmiRDCAFxyO7Bl/GBu9OEBFA1eOvHB+ +wTmPDMswRetQNh4QCRXzk1JzP1Wk5CobUL9iinCWFoTJmnsPPSOWlosN6ewaNXt kYFpRLy5xt9EP7dlfgBSjiRlthDhTdMrFjD5bsy1vdm1w7HKUo82lHa4O8Hq3PHS tinKICUqRsbjig== =Sqr1 -----END PGP SIGNATURE----- Merge tag 'x86-entry-2021-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 irq entry updates from Thomas Gleixner: "The irq stack switching was moved out of the ASM entry code in course of the entry code consolidation. It ended up being suboptimal in various ways. This reworks the X86 irq stack handling: - Make the stack switching inline so the stackpointer manipulation is not longer at an easy to find place. - Get rid of the unnecessary indirect call. - Avoid the double stack switching in interrupt return and reuse the interrupt stack for softirq handling. - A objtool fix for CONFIG_FRAME_POINTER=y builds where it got confused about the stack pointer manipulation" * tag 'x86-entry-2021-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Fix stack-swizzle for FRAME_POINTER=y um: Enforce the usage of asm-generic/softirq_stack.h x86/softirq/64: Inline do_softirq_own_stack() softirq: Move do_softirq_own_stack() to generic asm header softirq: Move __ARCH_HAS_DO_SOFTIRQ to Kconfig x86: Select CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK x86/softirq: Remove indirection in do_softirq_own_stack() x86/entry: Use run_sysvec_on_irqstack_cond() for XEN upcall x86/entry: Convert device interrupts to inline stack switching x86/entry: Convert system vectors to irq stack macro x86/irq: Provide macro for inlining irq stack switching x86/apic: Split out spurious handling code x86/irq/64: Adjust the per CPU irq stack pointer by 8 x86/irq: Sanitize irq stack tracking x86/entry: Fix instrumentation annotation |
||
Linus Torvalds
|
21a6ab2131 |
Modules updates for v5.12
Summary of modules changes for the 5.12 merge window: - Retire EXPORT_UNUSED_SYMBOL() and EXPORT_SYMBOL_GPL_FUTURE(). These export types were introduced between 2006 - 2008. All the of the unused symbols have been long removed and gpl future symbols were converted to gpl quite a long time ago, and I don't believe these export types have been used ever since. So, I think it should be safe to retire those export types now. (Christoph Hellwig) - Refactor and clean up some aged code cruft in the module loader (Christoph Hellwig) - Build {,module_}kallsyms_on_each_symbol only when livepatching is enabled, as it is the only caller (Christoph Hellwig) - Unexport find_module() and module_mutex and fix the last module callers to not rely on these anymore. Make module_mutex internal to the module loader. (Christoph Hellwig) - Harden ELF checks on module load and validate ELF structures before checking the module signature (Frank van der Linden) - Fix undefined symbol warning for clang (Fangrui Song) - Fix smatch warning (Dan Carpenter) Signed-off-by: Jessica Yu <jeyu@kernel.org> -----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEVrp26glSWYuDNrCUwEV+OM47wXIFAmA0/KMQHGpleXVAa2Vy bmVsLm9yZwAKCRDARX44zjvBcu0uD/4nmRp18EKAtdUZivsZHat0aEWGlkmrVueY 5huYw6iwM8b/wIAl3xwLki1Iv0/l0a83WXZhLG4ekl0/Nj8kgllA+jtBrZWpoLMH CZusN5dS9YwwyD2vu3ak83ARcehcDEPeA9thvc3uRFGis6Hi4bt1rkzGdrzsgqR4 tybfN4qaQx4ZAKFxA8bnS58l7QTFwUzTxJfM6WWzl1Q+mLZDr/WP+loJ/f1/oFFg ufN31KrqqFpdQY5UKq5P4H8FVq/eXE1Mwl8vo3HsnAj598fznyPUmA3D/j+N4GuR sTGBVZ9CSehUj7uZRs+Qgg6Bd+y3o44N29BrdZWA6K3ieTeQQpA+VgPUNrDBjGhP J/9Y4ms4PnuNEWWRaa73m9qsVqAsjh9+T2xp9PYn9uWLCM8BvQFtWcY7tw4/nB0/ INmyiP/tIRpwWkkBl47u1TPR09FzBBGDZjBiSn3lm3VX+zCYtHoma5jWyejG11cf ybDrTsci9ANyHNP2zFQsUOQJkph78PIal0i3k4ODqGJvaC0iEIH3Xjv+0dmE14rq kGRrG/HN6HhMZPjashudVUktyTZ63+PJpfFlQbcUzdvjQQIkzW0vrCHMWx9vD1xl Na7vZLl4Nb03WSJp6saY6j2YSRKL0poGETzGqrsUAHEhpEOPHduaiCVlAr/EmeMk p6SrWv8+UQ== =T29Q -----END PGP SIGNATURE----- Merge tag 'modules-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux Pull module updates from Jessica Yu: - Retire EXPORT_UNUSED_SYMBOL() and EXPORT_SYMBOL_GPL_FUTURE(). These export types were introduced between 2006 - 2008. All the of the unused symbols have been long removed and gpl future symbols were converted to gpl quite a long time ago, and I don't believe these export types have been used ever since. So, I think it should be safe to retire those export types now (Christoph Hellwig) - Refactor and clean up some aged code cruft in the module loader (Christoph Hellwig) - Build {,module_}kallsyms_on_each_symbol only when livepatching is enabled, as it is the only caller (Christoph Hellwig) - Unexport find_module() and module_mutex and fix the last module callers to not rely on these anymore. Make module_mutex internal to the module loader (Christoph Hellwig) - Harden ELF checks on module load and validate ELF structures before checking the module signature (Frank van der Linden) - Fix undefined symbol warning for clang (Fangrui Song) - Fix smatch warning (Dan Carpenter) * tag 'modules-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: module: potential uninitialized return in module_kallsyms_on_each_symbol() module: remove EXPORT_UNUSED_SYMBOL* module: remove EXPORT_SYMBOL_GPL_FUTURE module: move struct symsearch to module.c module: pass struct find_symbol_args to find_symbol module: merge each_symbol_section into find_symbol module: remove each_symbol_in_section module: mark module_mutex static kallsyms: only build {,module_}kallsyms_on_each_symbol when required kallsyms: refactor {,module_}kallsyms_on_each_symbol module: use RCU to synchronize find_module module: unexport find_module and module_mutex drm: remove drm_fb_helper_modinit powerpc/powernv: remove get_cxl_module module: harden ELF info handling module: Ignore _GLOBAL_OFFSET_TABLE_ when warning for undefined symbols |
||
Linus Torvalds
|
79db4d2293 |
clang-lto series for v5.12-rc1
- Clang LTO build infrastructure and arm64-specific enablement (Sami Tolvanen)
- Recursive build CC_FLAGS_LTO fix (Alexander Lobakin)
-----BEGIN PGP SIGNATURE-----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=6peY
-----END PGP SIGNATURE-----
Merge tag 'clang-lto-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull clang LTO updates from Kees Cook:
"Clang Link Time Optimization.
This is built on the work done preparing for LTO by arm64 folks,
tracing folks, etc. This includes the core changes as well as the
remaining pieces for arm64 (LTO has been the default build method on
Android for about 3 years now, as it is the prerequisite for the
Control Flow Integrity protections).
While x86 LTO enablement is done, it depends on some pending objtool
clean-ups. It's possible that I'll send a "part 2" pull request for
LTO that includes x86 support.
For merge log posterity, and as detailed in commit
|
||
Alexander Lobakin
|
49387f6288 |
vmlinux.lds.h: catch even more instrumentation symbols into .data
LKP caught another bunch of orphaned instrumentation symbols [0]: mipsel-linux-ld: warning: orphan section `.data.$LPBX1' from `init/main.o' being placed in section `.data.$LPBX1' mipsel-linux-ld: warning: orphan section `.data.$LPBX0' from `init/main.o' being placed in section `.data.$LPBX0' mipsel-linux-ld: warning: orphan section `.data.$LPBX1' from `init/do_mounts.o' being placed in section `.data.$LPBX1' mipsel-linux-ld: warning: orphan section `.data.$LPBX0' from `init/do_mounts.o' being placed in section `.data.$LPBX0' mipsel-linux-ld: warning: orphan section `.data.$LPBX1' from `init/do_mounts_initrd.o' being placed in section `.data.$LPBX1' mipsel-linux-ld: warning: orphan section `.data.$LPBX0' from `init/do_mounts_initrd.o' being placed in section `.data.$LPBX0' mipsel-linux-ld: warning: orphan section `.data.$LPBX1' from `init/initramfs.o' being placed in section `.data.$LPBX1' mipsel-linux-ld: warning: orphan section `.data.$LPBX0' from `init/initramfs.o' being placed in section `.data.$LPBX0' mipsel-linux-ld: warning: orphan section `.data.$LPBX1' from `init/calibrate.o' being placed in section `.data.$LPBX1' mipsel-linux-ld: warning: orphan section `.data.$LPBX0' from `init/calibrate.o' being placed in section `.data.$LPBX0' [...] Soften the wildcard to .data.$L* to grab these ones into .data too. [0] https://lore.kernel.org/lkml/202102231519.lWPLPveV-lkp@intel.com Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Alexander Lobakin <alobakin@pm.me> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> |
||
Linus Torvalds
|
04471d3f18 |
This pull request contains the following changes for UML:
- Many cleanups and fixes for our virtio code - Add support for a pseudo RTC - Fix for a possible jailbreak - Minor fixes (spelling, header files) -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEdgfidid8lnn52cLTZvlZhesYu8EFAmAyu0oWHHJpY2hhcmRA c2lnbWEtc3Rhci5hdAAKCRBm+VmF6xi7wd5jD/9sb/5xYhXCSfTdPS/eIrWvBQoc B8rxLfRpYW1Yvzz4R60/vKe8/td5I1/AvlprLp/1AJeawl49vCbSOqwdjn+58Uqb rlagZ2Ikilfn5lVIsxPf8fjbleonvBe8qVA30gJKgCYdYuAcXLs404jZ8MMvwZ0g t4G7BUc7bq19+UVF06kwefzC64c1WgPiHTmO6DT6RcXoFKq/x6i1FN4QnMEoiKQi SsficYHo7FsIhJZKtgTfujzEInLyMMuZ9mTJU/3wwUveLWArG0NRtIttC6FPvhi4 xx5RlTfC/Jzoqi9Qo14bLqV6KcOU/J7Oi4bDpYyhNggF/QfhnNgT8MGPwx5f+Gso 8OJg3MsZw70480EBH7/xLSdhZ3ih178Rr/asmiJkwLOYm5zJ22yqtx/jXQBlGOz3 FHPgTMJcRMzosGqSrhl+KxFdrK1uSLbcFZS3Sp8PUGdtgPPu19Proz2SPdHzt1Mj QJY30nRKKUoTLnRYnQV3VSa7uZXGVAK+HtkpRl/ubTKbGcSF8rdl4fYhOPnmAsKQ F4HBXwqKBht7eKN2BsNNTLz86OFBopn8eFqq8XxwOqF9O7DZitU0sOboWJyMUY2u /QzKxtSAUnNg6Ab+whKhAvkwktJ7IrVJh1JENWDy0pRoCGdF135ajic0bpFDCjqV ohOT/Ol+p4/ClLgxiw== =e5Qa -----END PGP SIGNATURE----- Merge tag 'for-linux-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml Pull UML updates from Richard Weinberger: - Many cleanups and fixes for our virtio code - Add support for a pseudo RTC - Fix for a possible jailbreak - Minor fixes (spelling, header files) * tag 'for-linux-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: irq.h: include <asm-generic/irq.h> um: io.h: include <linux/types.h> um: add a pseudo RTC um: remove process stub VMA um: rework userspace stubs to not hard-code stub location um: separate child and parent errors in clone stub um: defer killing userspace on page table update failures um: mm: check more comprehensively for stub changes um: print register names in wait_for_stub um: hostfs: use a kmem cache for inodes mm: Remove arch_remap() and mm-arch-hooks.h um: fix spelling mistake in Kconfig "privleges" -> "privileges" um: virtio: allow devices to be configured for wakeup um: time-travel: rework interrupt handling in ext mode um: virtio: disable VQs during suspend um: virtio: fix handling of messages without payload um: virtio: clean up a comment |
||
Linus Torvalds
|
3e10585335 |
x86:
- Support for userspace to emulate Xen hypercalls - Raise the maximum number of user memslots - Scalability improvements for the new MMU. Instead of the complex "fast page fault" logic that is used in mmu.c, tdp_mmu.c uses an rwlock so that page faults are concurrent, but the code that can run against page faults is limited. Right now only page faults take the lock for reading; in the future this will be extended to some cases of page table destruction. I hope to switch the default MMU around 5.12-rc3 (some testing was delayed due to Chinese New Year). - Cleanups for MAXPHYADDR checks - Use static calls for vendor-specific callbacks - On AMD, use VMLOAD/VMSAVE to save and restore host state - Stop using deprecated jump label APIs - Workaround for AMD erratum that made nested virtualization unreliable - Support for LBR emulation in the guest - Support for communicating bus lock vmexits to userspace - Add support for SEV attestation command - Miscellaneous cleanups PPC: - Support for second data watchpoint on POWER10 - Remove some complex workarounds for buggy early versions of POWER9 - Guest entry/exit fixes ARM64 - Make the nVHE EL2 object relocatable - Cleanups for concurrent translation faults hitting the same page - Support for the standard TRNG hypervisor call - A bunch of small PMU/Debug fixes - Simplification of the early init hypercall handling Non-KVM changes (with acks): - Detection of contended rwlocks (implemented only for qrwlocks, because KVM only needs it for x86) - Allow __DISABLE_EXPORTS from assembly code - Provide a saner follow_pfn replacements for modules -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmApSRgUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroOc7wf9FnlinKoTFaSk7oeuuhF/CoCVwSFs Z9+A2sNI99tWHQxFR6dyDkEFeQoXnqSxfLHtUVIdH/JnTg0FkEvFz3NK+0PzY1PF PnGNbSoyhP58mSBG4gbBAxdF3ZJZMB8GBgYPeR62PvMX2dYbcHqVBNhlf6W4MQK4 5mAUuAnbf19O5N267sND+sIg3wwJYwOZpRZB7PlwvfKAGKf18gdBz5dQ/6Ej+apf P7GODZITjqM5Iho7SDm/sYJlZprFZT81KqffwJQHWFMEcxFgwzrnYPx7J3gFwRTR eeh9E61eCBDyCTPpHROLuNTVBqrAioCqXLdKOtO5gKvZI3zmomvAsZ8uXQ== =uFZU -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull KVM updates from Paolo Bonzini: "x86: - Support for userspace to emulate Xen hypercalls - Raise the maximum number of user memslots - Scalability improvements for the new MMU. Instead of the complex "fast page fault" logic that is used in mmu.c, tdp_mmu.c uses an rwlock so that page faults are concurrent, but the code that can run against page faults is limited. Right now only page faults take the lock for reading; in the future this will be extended to some cases of page table destruction. I hope to switch the default MMU around 5.12-rc3 (some testing was delayed due to Chinese New Year). - Cleanups for MAXPHYADDR checks - Use static calls for vendor-specific callbacks - On AMD, use VMLOAD/VMSAVE to save and restore host state - Stop using deprecated jump label APIs - Workaround for AMD erratum that made nested virtualization unreliable - Support for LBR emulation in the guest - Support for communicating bus lock vmexits to userspace - Add support for SEV attestation command - Miscellaneous cleanups PPC: - Support for second data watchpoint on POWER10 - Remove some complex workarounds for buggy early versions of POWER9 - Guest entry/exit fixes ARM64: - Make the nVHE EL2 object relocatable - Cleanups for concurrent translation faults hitting the same page - Support for the standard TRNG hypervisor call - A bunch of small PMU/Debug fixes - Simplification of the early init hypercall handling Non-KVM changes (with acks): - Detection of contended rwlocks (implemented only for qrwlocks, because KVM only needs it for x86) - Allow __DISABLE_EXPORTS from assembly code - Provide a saner follow_pfn replacements for modules" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (192 commits) KVM: x86/xen: Explicitly pad struct compat_vcpu_info to 64 bytes KVM: selftests: Don't bother mapping GVA for Xen shinfo test KVM: selftests: Fix hex vs. decimal snafu in Xen test KVM: selftests: Fix size of memslots created by Xen tests KVM: selftests: Ignore recently added Xen tests' build output KVM: selftests: Add missing header file needed by xAPIC IPI tests KVM: selftests: Add operand to vmsave/vmload/vmrun in svm.c KVM: SVM: Make symbol 'svm_gp_erratum_intercept' static locking/arch: Move qrwlock.h include after qspinlock.h KVM: PPC: Book3S HV: Fix host radix SLB optimisation with hash guests KVM: PPC: Book3S HV: Ensure radix guest has no SLB entries KVM: PPC: Don't always report hash MMU capability for P9 < DD2.2 KVM: PPC: Book3S HV: Save and restore FSCR in the P9 path KVM: PPC: remove unneeded semicolon KVM: PPC: Book3S HV: Use POWER9 SLBIA IH=6 variant to clear SLB KVM: PPC: Book3S HV: No need to clear radix host SLB before loading HPT guest KVM: PPC: Book3S HV: Fix radix guest SLB side channel KVM: PPC: Book3S HV: Remove support for running HPT guest on RPT host without mixed mode support KVM: PPC: Book3S HV: Introduce new capability for 2nd DAWR KVM: PPC: Book3S HV: Add infrastructure to support 2nd DAWR ... |
||
Linus Torvalds
|
9c5b80b795 |
hyperv-next for 5.12
-----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEIbPD0id6easf0xsudhRwX5BBoF4FAmArly8THHdlaS5saXVA a2VybmVsLm9yZwAKCRB2FHBfkEGgXkRfCADB0PA4xlfVF0Na/iZoBFdNFr3EMU4K NddGJYyk0o+gipUIj2xu7TksVw8c1/cWilXOUBe7oZRKw2/fC/0hpDwvLpPtD/wP +Tc2DcIgwquMvsSksyqpMOb0YjNNhWCx9A9xPWawpUdg20IfbK/ekRHlFI5MsEww 7tFS+MHY4QbsPv0WggoK61PGnhGCBt/85Lv4I08ZGohA6uirwC4fNIKp83SgFNtf 1hHbvpapAFEXwZiKFbzwpue20jWJg+tlTiEFpen3exjBICoagrLLaz3F0SZJvbxl 2YY32zbBsQe4Izre5PVuOlMoNFRom9NSzEzdZT10g7HNtVrwKVNLcohS =MyO4 -----END PGP SIGNATURE----- Merge tag 'hyperv-next-signed-20210216' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull Hyper-V updates from Wei Liu: - VMBus hardening patches from Andrea Parri and Andres Beltran. - Patches to make Linux boot as the root partition on Microsoft Hypervisor from Wei Liu. - One patch to add a new sysfs interface to support hibernation on Hyper-V from Dexuan Cui. - Two miscellaneous clean-up patches from Colin and Gustavo. * tag 'hyperv-next-signed-20210216' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (31 commits) Revert "Drivers: hv: vmbus: Copy packets sent by Hyper-V out of the ring buffer" iommu/hyperv: setup an IO-APIC IRQ remapping domain for root partition x86/hyperv: implement an MSI domain for root partition asm-generic/hyperv: import data structures for mapping device interrupts asm-generic/hyperv: introduce hv_device_id and auxiliary structures asm-generic/hyperv: update hv_interrupt_entry asm-generic/hyperv: update hv_msi_entry x86/hyperv: implement and use hv_smp_prepare_cpus x86/hyperv: provide a bunch of helper functions ACPI / NUMA: add a stub function for node_to_pxm() x86/hyperv: handling hypercall page setup for root x86/hyperv: extract partition ID from Microsoft Hypervisor if necessary x86/hyperv: allocate output arg pages if required clocksource/hyperv: use MSR-based access if running as root Drivers: hv: vmbus: skip VMBus initialization if Linux is root x86/hyperv: detect if Linux is the root partition asm-generic/hyperv: change HV_CPU_POWER_MANAGEMENT to HV_CPU_MANAGEMENT hv: hyperv.h: Replace one-element array with flexible-array in struct icmsg_negotiate hv_netvsc: Restrict configurations on isolated guests Drivers: hv: vmbus: Enforce 'VMBus version >= 5.2' on isolated guests ... |
||
Linus Torvalds
|
2671fe5e1d |
- added support for Nintendo N64
- added support for Realtek RTL83XX SoCs - kaslr support for Loongson64 - first steps to get rid of set_fs() - DMA runtime coherent/non-coherent selection cleanup - cleanups and fixes -----BEGIN PGP SIGNATURE----- iQJOBAABCAA4FiEEbt46xwy6kEcDOXoUeZbBVTGwZHAFAmAvmm8aHHRzYm9nZW5k QGFscGhhLmZyYW5rZW4uZGUACgkQeZbBVTGwZHCbwQ//aCn2l/GuXvKFuGkbTMSW tqrnN4WNVpqK96BHlbS1CLzBj1Qzf9znXq4SBuK2ga3Gks/WOrG9vcOhARX3k5C3 dWi5TQzCKChjKmGxUij3mmIxE41L3vpZ2TOKCVVG8M+/0rMsWClNXfU/Bc9B4n4Y VhZsd3KEjI+SezWT6h1Hw4bmhq2OPTH4CzZMA6Dpq3gZjmNBj1z5SMtLM0XA60dL jkXYxYeMcPEWOoX69z2Gf1XFRWQNbCfnM3OHHeLeNo9eG4ZQbv4OlZLisXI81r71 0DWe/b/RZM0NdkgfSUM+Yen8KPgj4JcfA3cM6yKZClmF0IvrvvC4LvEBmCSoSfId uQvPAwEoCFm0iuGhcL7XHCxL8QUKelrOWgzRzeMiVfX6XdSwW9evytjqQ5hYl5ov lwIfmuK6Zc/c9mGLzbYG4b73eW1Kwhb9g+wvJRK44rFHZh5ztoYPgoB5Y+ECo9zO nIfc9FjeyMIjLJEKSybYf8BZlyLUJPprUBLx0xHdL4cXCb62Im947F4d6uTwDyNI oprIptQBMcJUwxSdIyreH5KyuV0Kyb20akmUB0wo6lx1+ilAQ0UsP9zTIkM4ihEN Lu85RdX973iIJ9M9fS00LLOPn9Osu5QSMw0LcSHTr7Eme83WrfGY3juxf61SJcE4 ZxYki79OFzK8gFxEjstFqpY= =kQfQ -----END PGP SIGNATURE----- Merge tag 'mips_5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS updates from Thomas Bogendoerfer: - added support for Nintendo N64 - added support for Realtek RTL83XX SoCs - kaslr support for Loongson64 - first steps to get rid of set_fs() - DMA runtime coherent/non-coherent selection cleanup - cleanups and fixes * tag 'mips_5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (98 commits) Revert "MIPS: Add basic support for ptrace single step" vmlinux.lds.h: catch more UBSAN symbols into .data MIPS: kernel: Drop kgdb_call_nmi_hook MAINTAINERS: Add git tree for KVM/mips MIPS: Use common way to parse elfcorehdr MIPS: Simplify EVA cache handling Revert "MIPS: kernel: {ftrace,kgdb}: Set correct address limit for cache flushes" MIPS: remove CONFIG_DMA_PERDEV_COHERENT MIPS: remove CONFIG_DMA_MAYBE_COHERENT driver core: lift dma_default_coherent into common code MIPS: refactor the runtime coherent vs noncoherent DMA indicators MIPS/alchemy: factor out the DMA coherent setup MIPS/malta: simplify plat_setup_iocoherency MIPS: Add basic support for ptrace single step MAINTAINERS: replace non-matching patterns for loongson{2,3} MIPS: Make check condition for SDBBP consistent with EJTAG spec mips: Replace lkml.org links with lore Revert "MIPS: microMIPS: Fix the judgment of mm_jr16_op and mm_jalr_op" MIPS: crash_dump.c: Simplify copy_oldmem_page() Revert "mips: Manually call fdt_init_reserved_mem() method" ... |
||
Linus Torvalds
|
657bd90c93 |
Scheduler updates for v5.12:
[ NOTE: unfortunately this tree had to be freshly rebased today, it's a same-content tree of 82891be90f3c (-next published) merged with v5.11. The main reason for the rebase was an authorship misattribution problem with a new commit, which we noticed in the last minute, and which we didn't want to be merged upstream. The offending commit was deep in the tree, and dependent commits had to be rebased as well. ] - Core scheduler updates: - Add CONFIG_PREEMPT_DYNAMIC: this in its current form adds the preempt=none/voluntary/full boot options (default: full), to allow distros to build a PREEMPT kernel but fall back to close to PREEMPT_VOLUNTARY (or PREEMPT_NONE) runtime scheduling behavior via a boot time selection. There's also the /debug/sched_debug switch to do this runtime. This feature is implemented via runtime patching (a new variant of static calls). The scope of the runtime patching can be best reviewed by looking at the sched_dynamic_update() function in kernel/sched/core.c. ( Note that the dynamic none/voluntary mode isn't 100% identical, for example preempt-RCU is available in all cases, plus the preempt count is maintained in all models, which has runtime overhead even with the code patching. ) The PREEMPT_VOLUNTARY/PREEMPT_NONE models, used by the vast majority of distributions, are supposed to be unaffected. - Fix ignored rescheduling after rcu_eqs_enter(). This is a bug that was found via rcutorture triggering a hang. The bug is that rcu_idle_enter() may wake up a NOCB kthread, but this happens after the last generic need_resched() check. Some cpuidle drivers fix it by chance but many others don't. In true 2020 fashion the original bug fix has grown into a 5-patch scheduler/RCU fix series plus another 16 RCU patches to address the underlying issue of missed preemption events. These are the initial fixes that should fix current incarnations of the bug. - Clean up rbtree usage in the scheduler, by providing & using the following consistent set of rbtree APIs: partial-order; less() based: - rb_add(): add a new entry to the rbtree - rb_add_cached(): like rb_add(), but for a rb_root_cached total-order; cmp() based: - rb_find(): find an entry in an rbtree - rb_find_add(): find an entry, and add if not found - rb_find_first(): find the first (leftmost) matching entry - rb_next_match(): continue from rb_find_first() - rb_for_each(): iterate a sub-tree using the previous two - Improve the SMP/NUMA load-balancer: scan for an idle sibling in a single pass. This is a 4-commit series where each commit improves one aspect of the idle sibling scan logic. - Improve the cpufreq cooling driver by getting the effective CPU utilization metrics from the scheduler - Improve the fair scheduler's active load-balancing logic by reducing the number of active LB attempts & lengthen the load-balancing interval. This improves stress-ng mmapfork performance. - Fix CFS's estimated utilization (util_est) calculation bug that can result in too high utilization values - Misc updates & fixes: - Fix the HRTICK reprogramming & optimization feature - Fix SCHED_SOFTIRQ raising race & warning in the CPU offlining code - Reduce dl_add_task_root_domain() overhead - Fix uprobes refcount bug - Process pending softirqs in flush_smp_call_function_from_idle() - Clean up task priority related defines, remove *USER_*PRIO and USER_PRIO() - Simplify the sched_init_numa() deduplication sort - Documentation updates - Fix EAS bug in update_misfit_status(), which degraded the quality of energy-balancing - Smaller cleanups Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmAtHBsRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1itgg/+NGed12pgPjYBzesdou60Lvx7LZLGjfOt M1F1EnmQGn/hEH2fCY6ZoqIZQTVltm7GIcBNabzYTzlaHZsdtyuDUJBZyj19vTlk zekcj7WVt+qvfjChaNwEJhQ9nnOM/eohMgEOHMAAJd9zlnQvve7NOLQ56UDM+kn/ 9taFJ5ZPvb4avP6C5p3KivvKex6Bjof/Tl0m3utpNyPpI/qK3FyGxwdgCxU0yepT ABWQX5ZQCufFvo1bgnBPfqyzab4MqhoM3bNKBsLQfuAlssG1xRv4KQOev4dRwrt9 pXJikV5C9yez5d2lGe5p0ltH5IZS/l9x2yI/ZQj3OUDTFyV1ic6WfFAqJgDzVF8E i/vvA4NPQiI241Bkps+ErcCw4aVOgiY6TWli74cHjLUIX0+As6aHrFWXGSxUmiHB WR+B8KmdfzRTTlhOxMA+cvlpZcKCfxWkJJmXzr/lDZzIuKPqM3QCE2wD9sixkfVo JNICT0IvZghWOdbMEfZba8Psh/e2LVI9RzdpEiuYJz1ZrVlt1hO0M6jBxY0hMz9n k54z81xODw0a8P2FHMtpmB1vhAeqCmvwA6DO8z0Oxs0DFi+KM2bLf2efHsCKafI+ Bm5v9YFaOk/55R76hJVh+aYLlyFgFkKd+P/niJTPDnxOk3SqJuXvTrql1HeGHkNr kYgQa23dsZk= =pyaG -----END PGP SIGNATURE----- Merge tag 'sched-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler updates from Ingo Molnar: "Core scheduler updates: - Add CONFIG_PREEMPT_DYNAMIC: this in its current form adds the preempt=none/voluntary/full boot options (default: full), to allow distros to build a PREEMPT kernel but fall back to close to PREEMPT_VOLUNTARY (or PREEMPT_NONE) runtime scheduling behavior via a boot time selection. There's also the /debug/sched_debug switch to do this runtime. This feature is implemented via runtime patching (a new variant of static calls). The scope of the runtime patching can be best reviewed by looking at the sched_dynamic_update() function in kernel/sched/core.c. ( Note that the dynamic none/voluntary mode isn't 100% identical, for example preempt-RCU is available in all cases, plus the preempt count is maintained in all models, which has runtime overhead even with the code patching. ) The PREEMPT_VOLUNTARY/PREEMPT_NONE models, used by the vast majority of distributions, are supposed to be unaffected. - Fix ignored rescheduling after rcu_eqs_enter(). This is a bug that was found via rcutorture triggering a hang. The bug is that rcu_idle_enter() may wake up a NOCB kthread, but this happens after the last generic need_resched() check. Some cpuidle drivers fix it by chance but many others don't. In true 2020 fashion the original bug fix has grown into a 5-patch scheduler/RCU fix series plus another 16 RCU patches to address the underlying issue of missed preemption events. These are the initial fixes that should fix current incarnations of the bug. - Clean up rbtree usage in the scheduler, by providing & using the following consistent set of rbtree APIs: partial-order; less() based: - rb_add(): add a new entry to the rbtree - rb_add_cached(): like rb_add(), but for a rb_root_cached total-order; cmp() based: - rb_find(): find an entry in an rbtree - rb_find_add(): find an entry, and add if not found - rb_find_first(): find the first (leftmost) matching entry - rb_next_match(): continue from rb_find_first() - rb_for_each(): iterate a sub-tree using the previous two - Improve the SMP/NUMA load-balancer: scan for an idle sibling in a single pass. This is a 4-commit series where each commit improves one aspect of the idle sibling scan logic. - Improve the cpufreq cooling driver by getting the effective CPU utilization metrics from the scheduler - Improve the fair scheduler's active load-balancing logic by reducing the number of active LB attempts & lengthen the load-balancing interval. This improves stress-ng mmapfork performance. - Fix CFS's estimated utilization (util_est) calculation bug that can result in too high utilization values Misc updates & fixes: - Fix the HRTICK reprogramming & optimization feature - Fix SCHED_SOFTIRQ raising race & warning in the CPU offlining code - Reduce dl_add_task_root_domain() overhead - Fix uprobes refcount bug - Process pending softirqs in flush_smp_call_function_from_idle() - Clean up task priority related defines, remove *USER_*PRIO and USER_PRIO() - Simplify the sched_init_numa() deduplication sort - Documentation updates - Fix EAS bug in update_misfit_status(), which degraded the quality of energy-balancing - Smaller cleanups" * tag 'sched-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits) sched,x86: Allow !PREEMPT_DYNAMIC entry/kvm: Explicitly flush pending rcuog wakeup before last rescheduling point entry: Explicitly flush pending rcuog wakeup before last rescheduling point rcu/nocb: Trigger self-IPI on late deferred wake up before user resume rcu/nocb: Perform deferred wake up before last idle's need_resched() check rcu: Pull deferred rcuog wake up to rcu_eqs_enter() callers sched/features: Distinguish between NORMAL and DEADLINE hrtick sched/features: Fix hrtick reprogramming sched/deadline: Reduce rq lock contention in dl_add_task_root_domain() uprobes: (Re)add missing get_uprobe() in __find_uprobe() smp: Process pending softirqs in flush_smp_call_function_from_idle() sched: Harden PREEMPT_DYNAMIC static_call: Allow module use without exposing static_call_key sched: Add /debug/sched_preempt preempt/dynamic: Support dynamic preempt with preempt= boot option preempt/dynamic: Provide irqentry_exit_cond_resched() static call preempt/dynamic: Provide preempt_schedule[_notrace]() static calls preempt/dynamic: Provide cond_resched() and might_resched() static calls preempt: Introduce CONFIG_PREEMPT_DYNAMIC static_call: Provide DEFINE_STATIC_CALL_RET0() ... |
||
Linus Torvalds
|
7b15c27e2f |
These changes fix MM (soft-)dirty bit management in the procfs code & clean up the API.
Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmAtAgsRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1gOnA/9GKJblgi88Qb23YwGKp0OfCMdLfx8FJa+ dq0AB0jgzc8v2J8IITSs/qo/8o25IE9IPTjTfItn0E0jxz7Y8J16urb/vyWX6O2s jb4riT5fIRCXvhv9DooxSQerZePaOJXbHYa2BBk8yqNJPGbd5kr0SUGn3BQnBQhR 0yAfqjrzBLMGzzSO+kK0nhGQH8BJZgYu94CHNnUZJtWcIb2ZC6lzZ7Lz0zi6ueRJ 81JblV4NCOC9uy9I9odOwESu2TIxT9afq1C/6COyrKYx3sWY6xPOGQTxYZe1LITE lb57/95qc7SOIj7Y3aL4YRSVRYRihEU31qlAltwP4fEnz49qdHJOR1HQmjKVG8xs Uaa6kCYFeTKmh4SRRr8ZR/hUkebrFUT+9+db6LmBs/i4Kt09T+ZurXC4jqmUHMFn 2nYCDH6RX153V1YwcHGkr4OWaUVWZwAZl+t0zIo7o7wQdkoAD75ydecW2R3nLMN7 p1ofGPXmT8Wh4en8LngBawO/4bBuunezh4L3vpz0/EU3viK5+DRsyNKf+d+Tti28 XCe7ID0GDGq7nIzSZxuyIxmAbWJxjI+7gWT2WUudrJxJ2rUUxPQms8GsQD54IMh5 UILv9GMBNuV8iA/2c3B52ff5iFl7kp+SxVS3MRC6zTudIV9VV6bb7WpFb8FLOhsH 3sEo0qDFab4= =qcXO -----END PGP SIGNATURE----- Merge tag 'core-mm-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull tlb gather updates from Ingo Molnar: "Theses fix MM (soft-)dirty bit management in the procfs code & clean up the TLB gather API" * tag 'core-mm-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/ldt: Use tlb_gather_mmu_fullmm() when freeing LDT page-tables tlb: arch: Remove empty __tlb_remove_tlb_entry() stubs tlb: mmu_gather: Remove start/end arguments from tlb_gather_mmu() tlb: mmu_gather: Introduce tlb_gather_mmu_fullmm() tlb: mmu_gather: Remove unused start/end arguments from tlb_finish_mmu() mm: proc: Invalidate TLB after clearing soft-dirty page state |
||
Linus Torvalds
|
02f9fc286e |
Power management updates for 5.12-rc1
- Add new power capping facility called DTPM (Dynamic Thermal Power Management), based on the existing power capping framework, to allow aggregate power constraints to be applied to sets of devices in a distributed manner, along with a CPU backend driver based on the Energy Model (Daniel Lezcano, Dan Carpenter, Colin Ian King). - Add AlderLake Mobile support to the Intel RAPL power capping driver and make it use the topology interface when laying out the system topology (Zhang Rui, Yunfeng Ye). - Drop the cpufreq tango driver belonging to a platform that is not supported any more (Arnd Bergmann). - Drop the redundant CPUFREQ_STICKY and CPUFREQ_PM_NO_WARN cpufreq driver flags (Viresh Kumar). - Update cpufreq drivers: * Fix max CPU frequency discovery in the intel_pstate driver and make janitorial changes in it (Chen Yu, Rafael Wysocki, Nigel Christian). * Fix resource leaks in the brcmstb-avs-cpufreq driver (Christophe JAILLET). * Make the tegra20 driver use the resource-managed API (Dmitry Osipenko). * Enable boost support in the qcom-hw driver (Shawn Guo). - Update the operating performance points (OPP) framework: * Clean up the OPP core (Dmitry Osipenko, Viresh Kumar). * Extend the OPP API by adding new helpers to it (Dmitry Osipenko, Viresh Kumar). * Allow required OPPs to be used for devfreq devices and update the devfreq governor code accordingly (Saravana Kannan). * Prepare the framework for introducing new dev_pm_opp_set_opp() helper (Viresh Kumar). * Drop dev_pm_opp_set_bw() and update related drivers (Viresh Kumar). * Allow lazy linking of required-OPPs (Viresh Kumar). - Simplify and clean up devfreq somewhat (Lukasz Luba, Yang Li, Pierre Kuo). - Update the generic power domains (genpd) framework: * Use device's next wakeup to determine domain idle state (Lina Iyer). * Improve initialization and debug (Dmitry Osipenko). * Simplify computations (Abaci Team). - Make janitorial changes in the core code handling system sleep and PM-runtime (Bhaskar Chowdhury, Bjorn Helgaas, Rikard Falkeborn, Zqiang). - Update the MAINTAINERS entry for the exynos cpuidle driver and drop DEBUG definition from intel_idle (Krzysztof Kozlowski, Tom Rix). - Extend the PM clock layer to cover clocks that must sleep (Nicolas Pitre). - Update the cpupower utility: * Update cpupower command, add support for AMD family 0x19 and clean up the code to remove many of the family checks to make future family updates easier (Nathan Fontenot, Robert Richter). * Add Makefile dependencies for install targets to allow building cpupower in parallel rather than serially (Ivan Babrou). - Make janitorial changes in power management Kconfig (Lukasz Luba). -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAmAquvMSHHJqd0Byand5 c29ja2kubmV0AAoJEILEb/54YlRx7MEQAIFx7WGu0TquvYYbX1Op4oxHaN5wLZba XZjh5g4dSn+fKF+WXO4+Ze8VwFx2E6p2650OYJ9A3H83yqjWz5x0CoYm++LTWkWJ CRPhyAL2JzrqDL2oJ/7XdK41cz/DT1p2B5cdOVeI4OaLhTzLa4TAO3EwCA/Eyayb qumbp6vt3G3zfSDLMA8Wa/HDNaWcN0/NDdnhlj9zlT27COyFJJUARa1jGA/5+2BK k/LP7homFIPf8vTGMkL/JuHU7Fsqa2vCFEzB22xyD8GE59dHoXYTlKA2pOr/2lJM VV5h0FDS6lFbkp6AQDHwh5tsGusT7dREFXebBUWtmETZmB9iQZXAo4k+MnUbYGSt stYFdDJpQkK42icF7uhJE1xuZkQ16xBm02pBvlJWMSyYyHCHhUH83VxhA11szA5/ glLHfhhdbAa1BKmFHuTEZiwCAssY+YmoAvUpgLW04csJ4s4+my7VCgVe6jOILv2H 0PdakYam/UEXPoDR4bAdJePZQvwbeUQUtmZ/oYb7Ab2ztfFcpVtZ5T0QeKazXkiZ BDtJ+XQJAhZOmLL4u2owGdevvjQU+68QZF1NfMoOTW2K7bcok3pVjj5uKRkfir6F R74mzHNNKOWBO9NwByinrMNJqHqPxfbREvg92Xi7GGDtt+rD7/K3K4Au+9W9MxwL AvUhPGadUZT1 =9xhj -----END PGP SIGNATURE----- Merge tag 'pm-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management updates from Rafael Wysocki: "These add a new power capping facility allowing aggregate power constraints to be applied to sets of devices in a distributed manner, add a new CPU ID to the RAPL power capping driver and improve it, drop a cpufreq driver belonging to a platform that is not supported any more, drop two redundant cpufreq driver flags, update cpufreq drivers (intel_pstate, brcmstb-avs, qcom-hw), update the operating performance points (OPP) framework (code cleanups, new helpers, devfreq-related modifications), clean up devfreq, extend the PM clock layer, update the cpupower utility and make assorted janitorial changes. Specifics: - Add new power capping facility called DTPM (Dynamic Thermal Power Management), based on the existing power capping framework, to allow aggregate power constraints to be applied to sets of devices in a distributed manner, along with a CPU backend driver based on the Energy Model (Daniel Lezcano, Dan Carpenter, Colin Ian King). - Add AlderLake Mobile support to the Intel RAPL power capping driver and make it use the topology interface when laying out the system topology (Zhang Rui, Yunfeng Ye). - Drop the cpufreq tango driver belonging to a platform that is not supported any more (Arnd Bergmann). - Drop the redundant CPUFREQ_STICKY and CPUFREQ_PM_NO_WARN cpufreq driver flags (Viresh Kumar). - Update cpufreq drivers: * Fix max CPU frequency discovery in the intel_pstate driver and make janitorial changes in it (Chen Yu, Rafael Wysocki, Nigel Christian). * Fix resource leaks in the brcmstb-avs-cpufreq driver (Christophe JAILLET). * Make the tegra20 driver use the resource-managed API (Dmitry Osipenko). * Enable boost support in the qcom-hw driver (Shawn Guo). - Update the operating performance points (OPP) framework: * Clean up the OPP core (Dmitry Osipenko, Viresh Kumar). * Extend the OPP API by adding new helpers to it (Dmitry Osipenko, Viresh Kumar). * Allow required OPPs to be used for devfreq devices and update the devfreq governor code accordingly (Saravana Kannan). * Prepare the framework for introducing new dev_pm_opp_set_opp() helper (Viresh Kumar). * Drop dev_pm_opp_set_bw() and update related drivers (Viresh Kumar). * Allow lazy linking of required-OPPs (Viresh Kumar). - Simplify and clean up devfreq somewhat (Lukasz Luba, Yang Li, Pierre Kuo). - Update the generic power domains (genpd) framework: * Use device's next wakeup to determine domain idle state (Lina Iyer). * Improve initialization and debug (Dmitry Osipenko). * Simplify computations (Abaci Team). - Make janitorial changes in the core code handling system sleep and PM-runtime (Bhaskar Chowdhury, Bjorn Helgaas, Rikard Falkeborn, Zqiang). - Update the MAINTAINERS entry for the exynos cpuidle driver and drop DEBUG definition from intel_idle (Krzysztof Kozlowski, Tom Rix). - Extend the PM clock layer to cover clocks that must sleep (Nicolas Pitre). - Update the cpupower utility: * Update cpupower command, add support for AMD family 0x19 and clean up the code to remove many of the family checks to make future family updates easier (Nathan Fontenot, Robert Richter). * Add Makefile dependencies for install targets to allow building cpupower in parallel rather than serially (Ivan Babrou). - Make janitorial changes in power management Kconfig (Lukasz Luba)" * tag 'pm-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (89 commits) MAINTAINERS: cpuidle: exynos: include header in file pattern powercap: intel_rapl: Use topology interface in rapl_init_domains() powercap: intel_rapl: Use topology interface in rapl_add_package() PM: sleep: Constify static struct attribute_group PM: Kconfig: remove unneeded "default n" options PM: EM: update Kconfig description and drop "default n" option cpufreq: Remove unused flag CPUFREQ_PM_NO_WARN cpufreq: Remove CPUFREQ_STICKY flag PM / devfreq: Add required OPPs support to passive governor PM / devfreq: Cache OPP table reference in devfreq OPP: Add function to look up required OPP's for a given OPP PM / devfreq: rk3399_dmc: Remove unneeded semicolon opp: Replace ENOTSUPP with EOPNOTSUPP opp: Fix "foo * bar" should be "foo *bar" opp: Don't ignore clk_get() errors other than -ENOENT opp: Update bandwidth requirements based on scaling up/down opp: Allow lazy-linking of required-opps opp: Remove dev_pm_opp_set_bw() devfreq: tegra30: Migrate to dev_pm_opp_set_opp() drm: msm: Migrate to dev_pm_opp_set_opp() ... |
||
Linus Torvalds
|
584ce3c9b4 |
SoC platform removal
There are a lot of platforms that have not seen any interesting code changes in the past five years or more. I made a list and asked around which ones are no longer in use [1], and received confirmation about six ARM platforms and the TI C6x architecture that have all reached the end of their life upstream, with no known users remaining: - efm32 -- added in 2011, first Cortex-M, no notable changes after 2013 - picoxcell -- added in 2011, abandoned after 2012 acquisition - prima2 -- added in 20111, no notable changes since 2015 - tango -- added in 2015, sporadic changes until 2017, but abandoned - u300 -- added in 2009, no notable changes since 2013 - zx --added in 2015 for both 32, 2017 for 64 bit, no notable changes - arch/c6x -- added in 2011, but work stalled soon after that A number of other platforms on the original list turned out to still have users. In some cases there are out-of-tree patches and users that plan to contribute them in the future, in other cases the code is complete and works reliably. [1] https://lore.kernel.org/lkml/CAK8P3a2DZ8xQp7R=H=wewHnT2=a_=M53QsZOueMVEf7tOZLKNg@mail.gmail.com/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmApiR8ACgkQYKtH/8kJ Uifl7A//RZVyxUSlbD/StS6oEOmkZH8j0L7yeYOKkSHGZI+6Dqxo6rooKymbeflk jJvDVQqLcrclT/7rWsKesdN8aW+ilfWrby5nDsWivsROrTw3DdvZgkjh7KYz7tA/ OxygKQu4W9I+ywJltR4ykTUxXohjU+duHPuZJawQk64xE3Q0MWxJlQQ2kHJYVJRu /rWgNDQaI2d8HFhhEVsn4PC0RLWfUuBevKEuRYqZwM/oB/HuYjY+uTUGe2RhlgWb sbcoD93JP2MghSypq33/UtEl4Uk7Wpdv2bshTTv8DL5ToltY7wD8qIIh+aSJk9hP 0FG3NTia7e9dqQQR2bskspGxP73iIuSN1exAbm/Ten5sysy6IsESmzqZRxXv+7Z1 q1Oyc4wYaotJPAxMOE00RMLiRa5domI8V6Y10I5uyOcmpRvwWK2WfCOE7D3WSQ5M i1JiqLnC5JtJ0vyVBeRKo99zZImeXXrmS0n+fcARGtcKwAqKSvKxFcLTmkj3KqHv L4Xgy5f83QrMZWmldX7IiwWjTar2geBM7pFgG/z3R6JqkaxWiDHxyok6j1WUCE7b MViRZ8wT7JC5sIkHuwXZ4jvAXPqHq6J1rmJreU6N/jzmv/PTQoUnQ3C/MbDNhuv8 NDVSRgrPcd/T0BrBkzIWk3t+Oh6ikDgflWsWkqIRFG0vCNx+KdM= =pf3b -----END PGP SIGNATURE----- Merge tag 'arm-platform-removal-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC platform removals from Arnd Bergmann: "There are a lot of platforms that have not seen any interesting code changes in the past five years or more. I made a list and asked around which ones are no longer in use, and received confirmation about six ARM platforms and the TI C6x architecture that have all reached the end of their life upstream, with no known users remaining: - efm32 - added in 2011, first Cortex-M, no notable changes after 2013 - picoxcell - added in 2011, abandoned after 2012 acquisition - prima2 - added in 20111, no notable changes since 2015 - tango - added in 2015, sporadic changes until 2017, but abandoned - u300 - added in 2009, no notable changes since 2013 - zx - added in 2015 for both 32, 2017 for 64 bit, no notable changes - arch/c6x - added in 2011, but work stalled soon after that A number of other platforms on the original list turned out to still have users. In some cases there are out-of-tree patches and users that plan to contribute them in the future, in other cases the code is complete and works reliably" Link: https://lore.kernel.org/lkml/CAK8P3a2DZ8xQp7R=H=wewHnT2=a_=M53QsZOueMVEf7tOZLKNg@mail.gmail.com/ * tag 'arm-platform-removal-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: ARM: remove u300 platform ARM: remove tango platform ARM: remove zte zx platform ARM: remove sirf prima2/atlas platforms c6x: remove architecture MAINTAINERS: Remove deleted platform efm32 ARM: drop efm32 platform ARM: Remove PicoXcell platform support ARM: dts: Remove PicoXcell platforms |
||
Josh Poimboeuf
|
73f44fe19d |
static_call: Allow module use without exposing static_call_key
When exporting static_call_key; with EXPORT_STATIC_CALL*(), the module can use static_call_update() to change the function called. This is not desirable in general. Not exporting static_call_key however also disallows usage of static_call(), since objtool needs the key to construct the static_call_site. Solve this by allowing objtool to create the static_call_site using the trampoline address when it builds a module and cannot find the static_call_key symbol. The module loader will then try and map the trampole back to a key before it constructs the normal sites list. Doing this requires a trampoline -> key associsation, so add another magic section that keeps those. Originally-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/20210127231837.ifddpn7rhwdaepiu@treble |
||
Alexander Lobakin
|
fa07eca8d8 |
vmlinux.lds.h: catch more UBSAN symbols into .data
LKP triggered lots of LD orphan warnings [0]:
mipsel-linux-ld: warning: orphan section `.data.$Lubsan_data299' from
`init/do_mounts_rd.o' being placed in section `.data.$Lubsan_data299'
mipsel-linux-ld: warning: orphan section `.data.$Lubsan_data183' from
`init/do_mounts_rd.o' being placed in section `.data.$Lubsan_data183'
mipsel-linux-ld: warning: orphan section `.data.$Lubsan_type3' from
`init/do_mounts_rd.o' being placed in section `.data.$Lubsan_type3'
mipsel-linux-ld: warning: orphan section `.data.$Lubsan_type2' from
`init/do_mounts_rd.o' being placed in section `.data.$Lubsan_type2'
mipsel-linux-ld: warning: orphan section `.data.$Lubsan_type0' from
`init/do_mounts_rd.o' being placed in section `.data.$Lubsan_type0'
[...]
Seems like "unnamed data" isn't the only type of symbols that UBSAN
instrumentation can emit.
Catch these into .data with the wildcard as well.
[0] https://lore.kernel.org/linux-mm/202102160741.k57GCNSR-lkp@intel.com
Fixes:
|
||
Nick Desaulniers
|
3c4fa46b30 |
vmlinux.lds.h: add DWARF v5 sections
We expect toolchains to produce these new debug info sections as part of DWARF v5. Add explicit placements to prevent the linker warnings from --orphan-section=warn. Compilers may produce such sections with explicit -gdwarf-5, or based on the implicit default version of DWARF when -g is used via DEBUG_INFO. This implicit default changes over time, and has changed to DWARF v5 with GCC 11. .debug_sup was mentioned in review, but without compilers producing it today, let's wait to add it until it becomes necessary. Cc: stable@vger.kernel.org Link: https://bugzilla.redhat.com/show_bug.cgi?id=1922707 Reported-by: Chris Murphy <lists@colorremedies.com> Suggested-by: Fangrui Song <maskray@google.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Mark Wielaard <mark@klomp.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> |
||
Rafael J. Wysocki
|
a9a939cb34 |
Merge branches 'powercap' and 'pm-misc'
* powercap: powercap: intel_rapl: Use topology interface in rapl_init_domains() powercap: intel_rapl: Use topology interface in rapl_add_package() powercap/intel_rapl: add support for AlderLake Mobile powercap/drivers/dtpm: Fix size of object being allocated powercap/drivers/dtpm: Fix an IS_ERR() vs NULL check powercap/drivers/dtpm: Fix some missing unlock bugs powercap/drivers/dtpm: Fix a double shift bug powercap/drivers/dtpm: Fix __udivdi3 and __aeabi_uldivmod unresolved symbols powercap/drivers/dtpm: Add CPU energy model based support powercap/drivers/dtpm: Add API for dynamic thermal power management Documentation/powercap/dtpm: Add documentation for dtpm units: Add Watt units * pm-misc: PM: Kconfig: remove unneeded "default n" options PM: EM: update Kconfig description and drop "default n" option |
||
Christophe Leroy
|
731ecea3e5 |
mm: Remove arch_remap() and mm-arch-hooks.h
powerpc was the last provider of arch_remap() and the last
user of mm-arch-hooks.h.
Since commit
|
||
Paolo Bonzini
|
8c6e67bec3 |
KVM/arm64 updates for Linux 5.12
- Make the nVHE EL2 object relocatable, resulting in much more maintainable code - Handle concurrent translation faults hitting the same page in a more elegant way - Support for the standard TRNG hypervisor call - A bunch of small PMU/Debug fixes - Allow the disabling of symbol export from assembly code - Simplification of the early init hypercall handling -----BEGIN PGP SIGNATURE----- iQJDBAABCgAtFiEEn9UcU+C1Yxj9lZw9I9DQutE9ekMFAmAmjqEPHG1hekBrZXJu ZWwub3JnAAoJECPQ0LrRPXpDoUEQAIrJ7YF4v4gz06a0HG9+b6fbmykHyxlG7jfm trvctfaiKzOybKoY5odPpNFzhbYOOdXXqYipyTHGwBYtGSy9G/9SjMKSUrfln2Ni lr1wBqapr9TE+SVKoR8pWWuZxGGbHVa7brNuMbMsMi1wwAsM2/n70H9PXrdq3QiK Ge1DWLso2oEfhtTwqNKa4dwB2MHjBhBFhhq+Nq5pslm6mmxJaYqz7pyBmw/C+2cc oU/6kpAa1yPAauptWXtYXJYOMHihxgEa1IdK3Gl0hUyFyu96xVkwH/KFsj+bRs23 QGGCSdy4313hzaoGaSOTK22R98Aeg0wI9a6tcCBvVVjTAztnlu1FPtUZr8e/F7uc +r8xVJUJFiywt3Zktf/D7YDK9LuMMqFnj0BkI4U9nIBY59XZRNhENsBCmjru5lnL iXa5cuta03H4emfssIChLpgn0XHFas6t5dFXBPGbXyw0qsQchTw98iQX9LVxefUK rOUGPIN4nE9ESRIZe0SPlAVeCtNP8cLH7+0YG9MJ1QeDVYaUsnvy9Ln/ox+514mR 5y2KJ6y7xnLB136SKCzPDDloYtz7BDiJq6a/RPiXKGheKoxy+N+BSe58yWCqFZYE Fx/cGUr7oSg39U7gCboog6BDp5e2CXBfbRllg6P47bZFfdPNwzNEzHvk49VltMxx Rl2W05bk =6EwV -----END PGP SIGNATURE----- Merge tag 'kvmarm-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 updates for Linux 5.12 - Make the nVHE EL2 object relocatable, resulting in much more maintainable code - Handle concurrent translation faults hitting the same page in a more elegant way - Support for the standard TRNG hypervisor call - A bunch of small PMU/Debug fixes - Allow the disabling of symbol export from assembly code - Simplification of the early init hypercall handling |
||
Ingo Molnar
|
a3251c1a36 |
Merge branch 'x86/paravirt' into x86/entry
Merge in the recent paravirt changes to resolve conflicts caused by objtool annotations. Conflicts: arch/x86/xen/xen-asm.S Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
Waiman Long
|
d8d0da4eee |
locking/arch: Move qrwlock.h include after qspinlock.h
include/asm-generic/qrwlock.h was trying to get arch_spin_is_locked via
asm-generic/qspinlock.h. However, this does not work because architectures
might be using queued rwlocks but not queued spinlocks (csky), or because they
might be defining their own queued_* macros before including asm/qspinlock.h.
To fix this, ensure that asm/spinlock.h always includes qrwlock.h after
defining arch_spin_is_locked (either directly for csky, or via
asm/qspinlock.h for other architectures). The only inclusion elsewhere
is in kernel/locking/qrwlock.c. That one is really unnecessary because
the file is only compiled in SMP configurations (config QUEUED_RWLOCKS
depends on SMP) and in that case linux/spinlock.h already includes
asm/qrwlock.h if needed, via asm/spinlock.h.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Waiman Long <longman@redhat.com>
Fixes:
|
||
Wei Liu
|
466a9c3f88 |
asm-generic/hyperv: import data structures for mapping device interrupts
Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com> Co-Developed-by: Sunil Muthuswamy <sunilmut@microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20210203150435.27941-15-wei.liu@kernel.org |
||
Wei Liu
|
12434e5fb6 |
asm-generic/hyperv: introduce hv_device_id and auxiliary structures
We will need to identify the device we want Microsoft Hypervisor to manipulate. Introduce the data structures for that purpose. They will be used in a later patch. Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com> Co-Developed-by: Sunil Muthuswamy <sunilmut@microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20210203150435.27941-14-wei.liu@kernel.org |
||
Wei Liu
|
b59fb7b60d |
asm-generic/hyperv: update hv_interrupt_entry
We will soon use the same structure to handle IO-APIC interrupts as well. Introduce an enum to identify the source and a data structure for IO-APIC RTE. While at it, update pci-hyperv.c to use the enum. No functional change. Signed-off-by: Wei Liu <wei.liu@kernel.org> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20210203150435.27941-13-wei.liu@kernel.org |
||
Wei Liu
|
d589ae61bc |
asm-generic/hyperv: update hv_msi_entry
We will soon need to access fields inside the MSI address and MSI data fields. Introduce hv_msi_address_register and hv_msi_data_register. Fix up one user of hv_msi_entry in mshyperv.h. No functional change expected. Signed-off-by: Wei Liu <wei.liu@kernel.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20210203150435.27941-12-wei.liu@kernel.org |
||
Wei Liu
|
86b5ec3552 |
x86/hyperv: provide a bunch of helper functions
They are used to deposit pages into Microsoft Hypervisor and bring up logical and virtual processors. Signed-off-by: Lillian Grassin-Drake <ligrassi@microsoft.com> Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com> Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Co-Developed-by: Lillian Grassin-Drake <ligrassi@microsoft.com> Co-Developed-by: Sunil Muthuswamy <sunilmut@microsoft.com> Co-Developed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20210203150435.27941-10-wei.liu@kernel.org |
||
Wei Liu
|
99a0f46af6 |
x86/hyperv: extract partition ID from Microsoft Hypervisor if necessary
We will need the partition ID for executing some hypercalls later. Signed-off-by: Lillian Grassin-Drake <ligrassi@microsoft.com> Co-Developed-by: Sunil Muthuswamy <sunilmut@microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20210203150435.27941-7-wei.liu@kernel.org |
||
Wei Liu
|
8f1d14cb83 |
asm-generic/hyperv: change HV_CPU_POWER_MANAGEMENT to HV_CPU_MANAGEMENT
This makes the name match Hyper-V TLFS. Signed-off-by: Wei Liu <wei.liu@kernel.org> Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Pavel Tatashin <pasha.tatashin@soleen.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20210203150435.27941-2-wei.liu@kernel.org |
||
Andrea Parri (Microsoft)
|
a6c76bb08d |
x86/hyperv: Load/save the Isolation Configuration leaf
If bit 22 of Group B Features is set, the guest has access to the Isolation Configuration CPUID leaf. On x86, the first four bits of EAX in this leaf provide the isolation type of the partition; we entail three isolation types: 'SNP' (hardware-based isolation), 'VBS' (software-based isolation), and 'NONE' (no isolation). Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: x86@kernel.org Cc: linux-arch@vger.kernel.org Link: https://lore.kernel.org/r/20210201144814.2701-2-parri.andrea@gmail.com Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> |
||
Thomas Gleixner
|
db1cc7aede |
softirq: Move do_softirq_own_stack() to generic asm header
To avoid include recursion hell move the do_softirq_own_stack() related content into a generic asm header and include it from all places in arch/ which need the prototype. This allows architectures to provide an inline implementation of do_softirq_own_stack() without introducing a lot of #ifdeffery all over the place. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210210002513.289960691@linutronix.de |
||
Fangrui Song
|
793f49a87a |
firmware_loader: align .builtin_fw to 8
arm64 references the start address of .builtin_fw (__start_builtin_fw)
with a pair of R_AARCH64_ADR_PREL_PG_HI21/R_AARCH64_LDST64_ABS_LO12_NC
relocations. The compiler is allowed to emit the
R_AARCH64_LDST64_ABS_LO12_NC relocation because struct builtin_fw in
include/linux/firmware.h is 8-byte aligned.
The R_AARCH64_LDST64_ABS_LO12_NC relocation requires the address to be a
multiple of 8, which may not be the case if .builtin_fw is empty.
Unconditionally align .builtin_fw to fix the linker error. 32-bit
architectures could use ALIGN(4) but that would add unnecessary
complexity, so just use ALIGN(8).
Link: https://lkml.kernel.org/r/20201208054646.2913063-1-maskray@google.com
Link: https://github.com/ClangBuiltLinux/linux/issues/1204
Fixes:
|
||
Christoph Hellwig
|
367948220f |
module: remove EXPORT_UNUSED_SYMBOL*
EXPORT_UNUSED_SYMBOL* is not actually used anywhere. Remove the unused functionality as we generally just remove unused code anyway. Reviewed-by: Miroslav Benes <mbenes@suse.cz> Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jessica Yu <jeyu@kernel.org> |
||
Christoph Hellwig
|
f1c3d73e97 |
module: remove EXPORT_SYMBOL_GPL_FUTURE
As far as I can tell this has never been used at all, and certainly not any time recently. Reviewed-by: Miroslav Benes <mbenes@suse.cz> Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jessica Yu <jeyu@kernel.org> |
||
Ben Gardon
|
26128cb6c7 |
locking/rwlocks: Add contention detection for rwlocks
rwlocks do not currently have any facility to detect contention like spinlocks do. In order to allow users of rwlocks to better manage latency, add contention detection for queued rwlocks. CC: Ingo Molnar <mingo@redhat.com> CC: Will Deacon <will@kernel.org> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Davidlohr Bueso <dbueso@suse.de> Acked-by: Waiman Long <longman@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Ben Gardon <bgardon@google.com> Message-Id: <20210202185734.1680553-7-bgardon@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
Quentin Perret
|
54effa6532 |
asm-generic: export: Stub EXPORT_SYMBOL with __DISABLE_EXPORTS
It is currently possible to stub EXPORT_SYMBOL() macros in C code using __DISABLE_EXPORTS, which is necessary to run in constrained environments such as the EFI stub or the decompressor. But this currently doesn't apply to exports from assembly, which can lead to somewhat confusing situations. Consolidate the __DISABLE_EXPORTS infrastructure by checking it from asm-generic/export.h as well. Signed-off-by: Quentin Perret <qperret@google.com> Acked-by: Will Deacon <will@kernel.org> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20210203141931.615898-2-qperret@google.com |
||
Will Deacon
|
d8b450530b |
tlb: mmu_gather: Introduce tlb_gather_mmu_fullmm()
Passing the range '0, -1' to tlb_gather_mmu() sets the 'fullmm' flag, which indicates that the mm_struct being operated on is going away. In this case, some architectures (such as arm64) can elide TLB invalidation by ensuring that the TLB tag (ASID) associated with this mm is not immediately reclaimed. Although this behaviour is documented in asm-generic/tlb.h, it's subtle and easily missed. Introduce tlb_gather_mmu_fullmm() to make it clearer that this is for the entire mm and WARN() if tlb_gather_mmu() is called with the 'fullmm' address range. Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Yu Zhao <yuzhao@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lkml.kernel.org/r/20210127235347.1402-4-will@kernel.org |
||
Arnd Bergmann
|
a579fcfa8e |
c6x: remove architecture
The c6x architecture was added to the kernel in 2011 at a time when running Linux on DSPs was widely seen as the logical evolution. It appears the trend has gone back to running Linux on Arm based SoCs with DSP, using a better supported software ecosystem, and having better real-time behavior for the DSP code. An example of this is TI's own Keystone2 platform. The upstream kernel port appears to no longer have any users. Mark Salter remained avaialable to review patches, but mentioned that he no longer has access to working hardware himself. Without any users, it's best to just remove the code completely to reduce the work for cross-architecture code changes. Many thanks to Mark for maintaining the code for the past ten years. Link: https://lore.kernel.org/lkml/41dc7795afda9f776d8cd0d3075f776cf586e97c.camel@redhat.com/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
Alexander Lobakin
|
f41b233de0 |
vmlinux.lds.h: catch UBSAN's "unnamed data" into data
When building kernel with both LD_DEAD_CODE_DATA_ELIMINATION and UBSAN, LLVM stack generates lots of "unnamed data" sections: ld.lld: warning: net/built-in.a(netfilter/utils.o): (.data.$__unnamed_2) is being placed in '.data.$__unnamed_2' ld.lld: warning: net/built-in.a(netfilter/utils.o): (.data.$__unnamed_3) is being placed in '.data.$__unnamed_3' ld.lld: warning: net/built-in.a(netfilter/utils.o): (.data.$__unnamed_4) is being placed in '.data.$__unnamed_4' ld.lld: warning: net/built-in.a(netfilter/utils.o): (.data.$__unnamed_5) is being placed in '.data.$__unnamed_5' [...] Also handle this by adding the related sections to generic definitions. Signed-off-by: Alexander Lobakin <alobakin@pm.me> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> |
||
Alexander Lobakin
|
9a427556fb |
vmlinux.lds.h: catch compound literals into data and BSS
When building kernel with LD_DEAD_CODE_DATA_ELIMINATION, LLVM stack generates separate sections for compound literals, just like in case with enabled LTO [0]: ld.lld: warning: drivers/built-in.a(mtd/nand/spi/gigadevice.o): (.data..compoundliteral.14) is being placed in '.data..compoundliteral.14' ld.lld: warning: drivers/built-in.a(mtd/nand/spi/gigadevice.o): (.data..compoundliteral.15) is being placed in '.data..compoundliteral.15' ld.lld: warning: drivers/built-in.a(mtd/nand/spi/gigadevice.o): (.data..compoundliteral.16) is being placed in '.data..compoundliteral.16' ld.lld: warning: drivers/built-in.a(mtd/nand/spi/gigadevice.o): (.data..compoundliteral.17) is being placed in '.data..compoundliteral.17' [...] Handle this by adding the related sections to generic definitions as suggested by Sami [0]. [0] https://lore.kernel.org/lkml/20201211184633.3213045-3-samitolvanen@google.com Suggested-by: Sami Tolvanen <samitolvanen@google.com> Suggested-by: Kees Cook <keescook@chromium.org> Signed-off-by: Alexander Lobakin <alobakin@pm.me> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> |
||
Atish Patra
|
ae3c107cd8
|
numa: Move numa implementation to common code
ARM64 numa implementation is generic enough that RISC-V can reuse that implementation with very minor cosmetic changes. This will help both ARM64 and RISC-V in terms of maintanace and feature improvement Move the numa implementation code to common directory so that both ISAs can reuse this. This doesn't introduce any function changes for ARM64. Signed-off-by: Atish Patra <atish.patra@wdc.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com> |
||
Sami Tolvanen
|
dc5723b02e |
kbuild: add support for Clang LTO
This change adds build system support for Clang's Link Time Optimization (LTO). With -flto, instead of ELF object files, Clang produces LLVM bitcode, which is compiled into native code at link time, allowing the final binary to be optimized globally. For more details, see: https://llvm.org/docs/LinkTimeOptimization.html The Kconfig option CONFIG_LTO_CLANG is implemented as a choice, which defaults to LTO being disabled. To use LTO, the architecture must select ARCH_SUPPORTS_LTO_CLANG and support: - compiling with Clang, - compiling all assembly code with Clang's integrated assembler, - and linking with LLD. While using CONFIG_LTO_CLANG_FULL results in the best runtime performance, the compilation is not scalable in time or memory. CONFIG_LTO_CLANG_THIN enables ThinLTO, which allows parallel optimization and faster incremental builds. ThinLTO is used by default if the architecture also selects ARCH_SUPPORTS_LTO_CLANG_THIN: https://clang.llvm.org/docs/ThinLTO.html To enable LTO, LLVM tools must be used to handle bitcode files, by passing LLVM=1 and LLVM_IAS=1 options to make: $ make LLVM=1 LLVM_IAS=1 defconfig $ scripts/config -e LTO_CLANG_THIN $ make LLVM=1 LLVM_IAS=1 To prepare for LTO support with other compilers, common parts are gated behind the CONFIG_LTO option, and LTO can be disabled for specific files by filtering out CC_FLAGS_LTO. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20201211184633.3213045-3-samitolvanen@google.com |
||
Arnd Bergmann
|
c35a824c31 |
arm64: make atomic helpers __always_inline
With UBSAN enabled and building with clang, there are occasionally warnings like WARNING: modpost: vmlinux.o(.text+0xc533ec): Section mismatch in reference from the function arch_atomic64_or() to the variable .init.data:numa_nodes_parsed The function arch_atomic64_or() references the variable __initdata numa_nodes_parsed. This is often because arch_atomic64_or lacks a __initdata annotation or the annotation of numa_nodes_parsed is wrong. for functions that end up not being inlined as intended but operating on __initdata variables. Mark these as __always_inline, along with the corresponding asm-generic wrappers. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20210108092024.4034860-1-arnd@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
||
Randy Dunlap
|
87dbc209ea |
local64.h: make <asm/local64.h> mandatory
Make <asm-generic/local64.h> mandatory in include/asm-generic/Kbuild and remove all arch/*/include/asm/local64.h arch-specific files since they only #include <asm-generic/local64.h>. This fixes build errors on arch/c6x/ and arch/nios2/ for block/blk-iocost.c. Build-tested on 21 of 25 arch-es. (tools problems on the others) Yes, we could even rename <asm-generic/local64.h> to <linux/local64.h> and change all #includes to use <linux/local64.h> instead. Link: https://lkml.kernel.org/r/20201227024446.17018-1-rdunlap@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Suggested-by: Christoph Hellwig <hch@infradead.org> Reviewed-by: Masahiro Yamada <masahiroy@kernel.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Mark Salter <msalter@redhat.com> Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Daniel Lezcano
|
a20d0ef97a |
powercap/drivers/dtpm: Add API for dynamic thermal power management
On the embedded world, the complexity of the SoC leads to an increasing number of hotspots which need to be monitored and mitigated as a whole in order to prevent the temperature to go above the normative and legally stated 'skin temperature'. Another aspect is to sustain the performance for a given power budget, for example virtual reality where the user can feel dizziness if the GPU performance is capped while a big CPU is processing something else. Or reduce the battery charging because the dissipated power is too high compared with the power consumed by other devices. The userspace is the most adequate place to dynamically act on the different devices by limiting their power given an application profile: it has the knowledge of the platform. These userspace daemons are in charge of the Dynamic Thermal Power Management (DTPM). Nowadays, the dtpm daemons are abusing the thermal framework as they act on the cooling device state to force a specific and arbitrary state without taking care of the governor decisions. Given the closed loop of some governors that can confuse the logic or directly enter in a decision conflict. As the number of cooling device support is limited today to the CPU and the GPU, the dtpm daemons have little control on the power dissipation of the system. The out of tree solutions are hacking around here and there in the drivers, in the frameworks to have control on the devices. The common solution is to declare them as cooling devices. There is no unification of the power limitation unit, opaque states are used. This patch provides a way to create a hierarchy of constraints using the powercap framework. The devices which are registered as power limit-able devices are represented in this hierarchy as a tree. They are linked together with intermediate nodes which are just there to propagate the constraint to the children. The leaves of the tree are the real devices, the intermediate nodes are virtual, aggregating the children constraints and power characteristics. Each node have a weight on a 2^10 basis, in order to reflect the percentage of power distribution of the children's node. This percentage is used to dispatch the power limit to the children. The weight is computed against the max power of the siblings. This simple approach allows to do a fair distribution of the power limit. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Tested-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
Linus Torvalds
|
e2ae634014 |
RISC-V Patches for the 5.11 Merge Window, Part 1
We have a handful of new kernel features for 5.11: * Support for the contiguous memory allocator. * Support for IRQ Time Accounting * Support for stack tracing * Support for strict /dev/mem * Support for kernel section protection I'm being a bit conservative on the cutoff for this round due to the timing, so this is all the new development I'm going to take for this cycle (even if some of it probably normally would have been OK). There are, however, some fixes on the list that I will likely be sending along either later this week or early next week. There is one issue in here: one of my test configurations (PREEMPT{,_DEBUG}=y) fails to boot on QEMU 5.0.0 (from April) as of the .text.init alignment patch. With any luck we'll sort out the issue, but given how many bugs get fixed all over the place and how unrelated those features seem my guess is that we're just running into something that's been lurking for a while and has already been fixed in the newer QEMU (though I wouldn't be surprised if it's one of these implicit assumptions we have in the boot flow). If it was hardware I'd be strongly inclined to look more closely, but given that users can upgrade their simulators I'm less worried about it. There are two merge conflicts, both in build files. They're both a bit clunky: arch/riscv/Kconfig is out of order (I have a script that's supposed to keep them in order, I'll fix it) and lib/Makefile is out of order (though GENERIC_LIB here doesn't mean quite what it does above). -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAl/cHO4THHBhbG1lckBk YWJiZWx0LmNvbQAKCRAuExnzX7sYiTlmD/4uDyNHBM1XH/XD4fSEwTYJvGLqt/Jo vtrGR/fm0SlQFUKCcywSzxcVAeGn56CACbEIDYLuL4xXRJmbwEuaRrHVx2sEhS9p pNhy+wus/SgDz5EUAawMyR2AEWgzl77hY5T/+AAo4yv65SGGBfsIdz5noIVwGNqW r0g5cw2O99z0vwu1aSrK4isWHconG9MfQnnVyepPSh67pyWS4aUCr1K3vLiqD2dE XcgtwdcgzUIY5aEoJNrWo5qTrcaG8m6MRNCDAKJ6MKdDA2wdGIN868G0wQnoURRm Y+yW7w3P20kM0b87zH50jujTWg38NBKOfaXb0mAfawZMapL60veTVmvs2kNtFXCy F6JWRkgTiRnGY72FtRR0igWXT5M7fz0EiLFXLMItGcgj79TUget4l/3sRMN47S/O cA/WiwptJH3mh8IkL6z5ZxWEThdOrbFt8F1T+Gyq/ayblcPnJaLn/wrWoeOwviWR fvEC7smuF5SBTbWZK5tBOP21Nvhb7bfr49Sgr8Tvdjl15tz97qK+2tsLXwkBoQnJ wU45jcXfzr5wgiGBOQANRite5bLsJ0TuOrTgA5gsGpv+JSDGbpcJbm0833x00nX/ 3GsW5xr+vsLCvljgPAtKsyDNRlGQu908Gxrat2+s8u92bLr1bwn30uKL5h6i/n1w QgWATuPPGXZZdw== =GWIH -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-5.11-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: "We have a handful of new kernel features for 5.11: - Support for the contiguous memory allocator. - Support for IRQ Time Accounting - Support for stack tracing - Support for strict /dev/mem - Support for kernel section protection I'm being a bit conservative on the cutoff for this round due to the timing, so this is all the new development I'm going to take for this cycle (even if some of it probably normally would have been OK). There are, however, some fixes on the list that I will likely be sending along either later this week or early next week. There is one issue in here: one of my test configurations (PREEMPT{,_DEBUG}=y) fails to boot on QEMU 5.0.0 (from April) as of the .text.init alignment patch. With any luck we'll sort out the issue, but given how many bugs get fixed all over the place and how unrelated those features seem my guess is that we're just running into something that's been lurking for a while and has already been fixed in the newer QEMU (though I wouldn't be surprised if it's one of these implicit assumptions we have in the boot flow). If it was hardware I'd be strongly inclined to look more closely, but given that users can upgrade their simulators I'm less worried about it" * tag 'riscv-for-linus-5.11-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: arm64: Use the generic devmem_is_allowed() arm: Use the generic devmem_is_allowed() RISC-V: Use the new generic devmem_is_allowed() lib: Add a generic version of devmem_is_allowed() riscv: Fixed kernel test robot warning riscv: kernel: Drop unused clean rule riscv: provide memmove implementation RISC-V: Move dynamic relocation section under __init RISC-V: Protect all kernel sections including init early RISC-V: Align the .init.text section RISC-V: Initialize SBI early riscv: Enable ARCH_STACKWALK riscv: Make stack walk callback consistent with generic code riscv: Cleanup stacktrace riscv: Add HAVE_IRQ_TIME_ACCOUNTING riscv: Enable CMA support riscv: Ignore Image.* and loader.bin riscv: Clean up boot dir riscv: Fix compressed Image formats build RISC-V: Add kernel image sections to the resource tree |
||
Linus Torvalds
|
157807123c |
asm-generic: mmu-context cleanup
This is a cleanup series from Nicholas Piggin, preparing for later changes. The asm/mmu_context.h header are generalized and common code moved to asm-gneneric/mmu_context.h. This saves a bit of code and makes it easier to change in the future. Signed-off-by: Arnd Bergmann <arnd@arndb.de> -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAl/Y1LsACgkQmmx57+YA GNm6kBAAq4/n6nuNnh6b9LhjXaZRG75gEyW7JvHl8KE5wmZHwDHqbwiQgU1b3lUs JJGbfKqi5ASKxNg6MpfYodmCOqeTUUYG0FUCb6lMhcxxMdfLTLYBvkNd6Y143M+T boi5b/iz+OUQdNPzlVeSsUEVsD59FIXmP/GhscWZN9VAyf/aLV2MDBIOhrDSJlPo ObexnP0Iw1E1NRQYDQ6L2dKTHa6XmHyUtw40ABPmd/6MSd1S+D+j3FGg+CYmvnzG k9g8FbNby8xtUfc0pZV4W/322WN8cDFF9bc04eTDZiAv1bk9lmfvWJ2bWjs3s2qt RO/suiZEOAta/WUX9vVLgYn2td00ef+AyjNUgffiUfvQfl++fiCDFTGl+MoCLjbh xQUPcRuRdED7bMKNrC0CcDOSwWEBWVXvkU/szBLDeE1sPjXzGQ80q1Y72k9y961I mqg7FrHqjZsxT9luXMAzClHNhXAtvehkJZBIdHlFok83EFoTQp48Da4jaDuOOhlq p/lkPJWOHegIQMWtGwRyGmG1qzil7b/QBNAPLgu9pF4TA+ySRBEB2BOr2jRSkj6N mNTHQbSYxBoktdt+VhtrSsxR+i8lwlegx+RNRFmKK3VH5da2nfiBaOY7zBQQHxCK yxQvXvsljSVpfkFKLc/S2nLQL1zTkRfFKV1Xmd3+3owR+EoqM60= =NpMX -----END PGP SIGNATURE----- Merge tag 'asm-generic-mmu-context-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic mmu-context cleanup from Arnd Bergmann: "This is a cleanup series from Nicholas Piggin, preparing for later changes. The asm/mmu_context.h header are generalized and common code moved to asm-gneneric/mmu_context.h. This saves a bit of code and makes it easier to change in the future" * tag 'asm-generic-mmu-context-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (25 commits) h8300: Fix generic mmu_context build m68k: mmu_context: Fix Sun-3 build xtensa: use asm-generic/mmu_context.h for no-op implementations x86: use asm-generic/mmu_context.h for no-op implementations um: use asm-generic/mmu_context.h for no-op implementations sparc: use asm-generic/mmu_context.h for no-op implementations sh: use asm-generic/mmu_context.h for no-op implementations s390: use asm-generic/mmu_context.h for no-op implementations riscv: use asm-generic/mmu_context.h for no-op implementations powerpc: use asm-generic/mmu_context.h for no-op implementations parisc: use asm-generic/mmu_context.h for no-op implementations openrisc: use asm-generic/mmu_context.h for no-op implementations nios2: use asm-generic/mmu_context.h for no-op implementations nds32: use asm-generic/mmu_context.h for no-op implementations mips: use asm-generic/mmu_context.h for no-op implementations microblaze: use asm-generic/mmu_context.h for no-op implementations m68k: use asm-generic/mmu_context.h for no-op implementations ia64: use asm-generic/mmu_context.h for no-op implementations hexagon: use asm-generic/mmu_context.h for no-op implementations csky: use asm-generic/mmu_context.h for no-op implementations ... |
||
Linus Torvalds
|
e2dc495734 |
asm-generic cleanups for v5.11
These are a couple of compiler warning fixes to make 'make W=2' less noisy, as well as some fixes to code comments in asm-generic. Signed-off-by: Arnd Bergmann <arnd@arndb.de> -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAl/Y10UACgkQmmx57+YA GNmJ8A/6A5iIFTJu48fEb4aVDXkW3WLsgRJ+pPt+sFqNhLJu6yi+HftNPhvfaXuJ 1/S2uqAc2VA8WbHn+KTqPk5SsBh5urI6c4DXxTDHihMT6lIqjRbhKIoIaFx7Vl8d 1CERQTqgJMmGNjrZkOnD3qsud9tbUh/dJZl3UuDYmYmgPw/p+y79mGIwAzvHYsU9 QdazdV6v22ceagp2QSLYTr7LN6pShijyXqcJ4ko9Zhzpj1TNsBF97nKIww/vMm3k XRLBDbPfTcGrUtQmDQ+lVWPNpFbiR2iZuC/CBy4e0MbpQP5l9zoVG7d60Imvi/17 9+vWmvng9ehFiyM5fRYG67L+cKVbPhVMW1TmUpxg88KvznudHKgV0jwXRZV2EO10 /RpVQIJ0rLODx2myEZd8Rqhv2UVmjJmViPq7Hr/D8C+JcwdtfcPnziQteBOB0piz QI1h0me+0Yj90nLpjWBGCwUnFh+8/SAoKkwViCxA+Jmn6/34hh0/5w9ExoI+4Frr 8KlHu5wZ6O0mqWT0INrbeb0nmktFOL9tGwTrHa8Z723osB1nuVtTAvHxWCOSlVDd XkuViDLkcJn4B+7EcUoR1YY9wCwK5eHcvA/h/44Y7xU5k4OEJP5hFhXy4ew2CCbE OpazsuCABkpno/WbLoJSdEA+2Dv/uiN5ChNjACgWBN2M4LlKBGs= =c2xf -----END PGP SIGNATURE----- Merge tag 'asm-generic-cleanup-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic cleanups from Arnd Bergmann: "These are a couple of compiler warning fixes to make 'make W=2' less noisy, as well as some fixes to code comments in asm-generic" * tag 'asm-generic-cleanup-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: syscalls: Fix file comments for syscalls implemented in kernel/sys.c ctype.h: remove duplicate isdigit() helper qspinlock: use signed temporaries for cmpxchg asm-generic: fix ffs -Wshadow warning asm-generic: percpu: avoid Wshadow warning asm-generic/sembuf: Update architecture related information in comment |
||
Christophe Leroy
|
0a571b085f |
asm-generic: force inlining of get_order() to work around gcc10 poor decision
When building mpc885_ads_defconfig with gcc 10.1,
the function get_order() appears 50 times in vmlinux:
[linux]# ppc-linux-objdump -x vmlinux | grep get_order | wc -l
50
[linux]# size vmlinux
text data bss dec hex filename
3842620 675624 135160 4653404 47015c vmlinux
In the old days, marking a function 'static inline' was forcing GCC to
inline, but since commit
|
||
Linus Torvalds
|
2cffa11e2a |
Generic interrupt and irqchips subsystem:
Core: - Consolidation and robustness changes for irq time accounting - Cleanup and consolidation of irq stats - Remove the fasteoi IPI flow which has been proved useless - Provide an interface for converting legacy interrupt mechanism into irqdomains Drivers: The rare event of not having completely new chip driver code, just new DT bindings and extensions of existing drivers to accomodate new variants! - Preliminary support for managed interrupts on platform devices - Correctly identify allocation of MSIs proxyied by another device - Generalise the Ocelot support to new SoCs - Improve GICv4.1 vcpu entry, matching the corresponding KVM optimisation - Work around spurious interrupts on Qualcomm PDC - Random fixes and cleanups Thanks, tglx -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl/YwZgTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoW4CD/90rTi1OQrMe3nb5okVjUZmktz/K3BN Cl5+evFiXiNoH+yJSMIVP+8eMAtBH6RgoaD0EUtSYmgzb9h/JRRQYwtPxobXcMb2 2xcWyLPJkVJL431JKNM8BBRYjLA2VnQ6Ia+Kx3BxqpgKXn5+cEMh1dwIy27Ll2rj +2NHAQe1sHL7o/KcCDhYqbVIDjw5K/d7YPwjEuPeEoNv1DOxrOCdCEfgFN0jBtRE CoaRTBskeAaHIzHNp47Mxyz43g4tA/D8kB68X0OjpEykVkPUbgNK1FHSwaPbIsFT FTSPU3zg8Q6DZ+RGyjNJykIFgUbirlJxARk2c6Ct8Kc3DN6K1jQt4EsU7CXRCc98 BTBjUNeFeNj3irZ4GHhyMKOQJCA1Z5nCRfBUGiW6gK8183us3BLfH5DM1zEsAYUh DCp+UKsLuXhbB80EWq7kl82/2mNGZ8En8EerE6XJA7Z3JN8FplOHEuLezYYzwzbb RIes971Vc50J2u2Wf/M2c3PDz3D/4FzfwUeA4LJfTnmOL09RYZ8CsqSckpx4ku/F XiBnjwtGEpDXWJ8z13DC7yONrxFGByV19+sqHTBlub5DmIs0gXjhC0dKAPAruUIS iCC+Vx6xLgOpTDu8shFsjibbi9Hb6vuZrF2Te+WR5Rf7d80C0J4b5K5PS4daUjr6 IuD2tz+3CtPjHw== =iytv -----END PGP SIGNATURE----- Merge tag 'irq-core-2020-12-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq updates from Thomas Gleixner: "Generic interrupt and irqchips subsystem updates. Unusually, there is not a single completely new irq chip driver, just new DT bindings and extensions of existing drivers to accomodate new variants! Core: - Consolidation and robustness changes for irq time accounting - Cleanup and consolidation of irq stats - Remove the fasteoi IPI flow which has been proved useless - Provide an interface for converting legacy interrupt mechanism into irqdomains Drivers: - Preliminary support for managed interrupts on platform devices - Correctly identify allocation of MSIs proxyied by another device - Generalise the Ocelot support to new SoCs - Improve GICv4.1 vcpu entry, matching the corresponding KVM optimisation - Work around spurious interrupts on Qualcomm PDC - Random fixes and cleanups" * tag 'irq-core-2020-12-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits) irqchip/qcom-pdc: Fix phantom irq when changing between rising/falling driver core: platform: Add devm_platform_get_irqs_affinity() ACPI: Drop acpi_dev_irqresource_disabled() resource: Add irqresource_disabled() genirq/affinity: Add irq_update_affinity_desc() irqchip/gic-v3-its: Flag device allocation as proxied if behind a PCI bridge irqchip/gic-v3-its: Tag ITS device as shared if allocating for a proxy device platform-msi: Track shared domain allocation irqchip/ti-sci-intr: Fix freeing of irqs irqchip/ti-sci-inta: Fix printing of inta id on probe success drivers/irqchip: Remove EZChip NPS interrupt controller Revert "genirq: Add fasteoi IPI flow" irqchip/hip04: Make IPIs use handle_percpu_devid_irq() irqchip/bcm2836: Make IPIs use handle_percpu_devid_irq() irqchip/armada-370-xp: Make IPIs use handle_percpu_devid_irq() irqchip/gic, gic-v3: Make SGIs use handle_percpu_devid_irq() irqchip/ocelot: Add support for Jaguar2 platforms irqchip/ocelot: Add support for Serval platforms irqchip/ocelot: Add support for Luton platforms irqchip/ocelot: prepare to support more SoC ... |
||
Thomas Gleixner
|
3c41e57a1e |
irqchip updates for Linux 5.11
- Preliminary support for managed interrupts on platform devices - Correctly identify allocation of MSIs proxyied by another device - Remove the fasteoi IPI flow which has been proved useless - Generalise the Ocelot support to new SoCs - Improve GICv4.1 vcpu entry, matching the corresponding KVM optimisation - Work around spurious interrupts on Qualcomm PDC - Random fixes and cleanups -----BEGIN PGP SIGNATURE----- iQJDBAABCgAtFiEEn9UcU+C1Yxj9lZw9I9DQutE9ekMFAl/Uxq8PHG1hekBrZXJu ZWwub3JnAAoJECPQ0LrRPXpDoW0P/0ZMDvFPxrfnJD46exUgUOPuuFF8jZxAlxD8 7UExqar7u6yX7bbq394jPgtOOxldDagfCx/jCXgb9ja7DK5EHKRcrfjaDT8knHi2 Keg5RaRMRi9TVltvWQTxAkXwSv0Atl881qqsndPeZCez0GNZp+HB34s+rNkZwBOu MBrWihMQOSv5QE6milsNc7HXLSHM1eLZ7Y2XgumNtKrIGEX9yZI7qwdMofwP8Za3 ayMOvc1WAWaTJI7Mg5ac1yTCVbqLmRHhCtws6c6DMgaRu6SI0itmbpQzkDuJJIe3 k9h4KQPaKAFcQsoo3GV0MKTMm63eq82XT3CAdv+htYRY1z95D2+nzNK+mJtsGptX gJ2zeJkUb4u+yVtNguL9qjo5ssCXV/6IybJxv6baaEFnSwQMUwqa066NdxmtqfIe 1BOWnc153a7SRbQ34M9/llje+v8YJbueGMS2RFR2LQ6IjjpaHsXh+YCZokfA/kdk zGbOUD5WWFtFD1T3UoaJ4gFt+pzHjNqym4CcEj4S1Vf5y+POUkNmC+GYK+xfm2Fp WJMbdIUxJhHFRD9L1ShtfAVUSbp712VOOdILp9rYAkOdqfb51BVUiMUP++s2dGp1 ZIT78qt7kTKT1CxbDdFAjzsi7RoMqdSGYgKmG4sVprELeZnFwq47nBkBr8XEQ1TT 0ccEUOY8 =7Z24 -----END PGP SIGNATURE----- Merge tag 'irqchip-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core Pull irqchip updates for 5.11 from Marc Zyngier: - Preliminary support for managed interrupts on platform devices - Correctly identify allocation of MSIs proxyied by another device - Remove the fasteoi IPI flow which has been proved useless - Generalise the Ocelot support to new SoCs - Improve GICv4.1 vcpu entry, matching the corresponding KVM optimisation - Work around spurious interrupts on Qualcomm PDC - Random fixes and cleanups Link: https://lore.kernel.org/r/20201212135626.1479884-1-maz@kernel.org |
||
Linus Torvalds
|
148842c98a |
Yet another large set of x86 interrupt management updates:
- Simplification and distangling of the MSI related functionality - Let IO/APIC construct the RTE entries from an MSI message instead of having IO/APIC specific code in the interrupt remapping drivers - Make the retrieval of the parent interrupt domain (vector or remap unit) less hardcoded and use the relevant irqdomain callbacks for selection. - Allow the handling of more than 255 CPUs without a virtualized IOMMU when the hypervisor supports it. This has made been possible by the above modifications and also simplifies the existing workaround in the HyperV specific virtual IOMMU. - Cleanup of the historical timer_works() irq flags related inconsistencies. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl/Xxd8THHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoYpOD/9C5TppNlPMUyx2SflH6bxt37pJEpln +hYTKsk+jSThntr5mfj+GifGvgmHOVBTGnlDUnUnrpN7TQmLFBzwTOtnBLW53AO2 16/u0+Xci4LNCtEkaymf0Rq4MfsfriXHPJr0A/CnZ0tpHSf5QKHAiitSiGujdMlb gbq43+zXd+jNkH7vkOLPX/7dZVI1hNASQEevJu2tRR4xYTuXFdBxvLgYkHtYKKrK R1sbs6nI6yIzye2u4m4xGu29SxgUft+zdUf+UehJKM3yFmf51d9qpkX+kLaTWuaL VPsMItbn0kdvxwXQWO6DYnIAAnVKCklyHQJTZCoNq9Fe91OoByak1CEVspSOa1av JmycNSch4IYWasR4vVCB1gbb+V9SejcKu5SV3CDrEDqwkOIpfiqpriUXSCJTLlFd QOEDOLuuk/79Qs//J/tb/nJ4IuKv8WPudDfIlMro8wUsAr67DjD4mnXprZ+svwWx Ct/0/Memk+BSa0cw6pvg24BUZGN6zrufkBu2HKT9GOXRUdNkdLkiPhT8mK4T/O0l f90QCLjPSOJ/K/pLEWdUHEPmgC5Q9RsXOmwVGqX+RbjfP7mYTJXlmWnBb+cFNch0 xFIH3SxVGylxxT06NX3SkvinrHj10CoAlmneefBlLtx6dF+2P84DAMZSF0OFToVI c2KMg5zoesI4bg== =8Gfs -----END PGP SIGNATURE----- Merge tag 'x86-apic-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 apic updates from Thomas Gleixner: "Yet another large set of x86 interrupt management updates: - Simplification and distangling of the MSI related functionality - Let IO/APIC construct the RTE entries from an MSI message instead of having IO/APIC specific code in the interrupt remapping drivers - Make the retrieval of the parent interrupt domain (vector or remap unit) less hardcoded and use the relevant irqdomain callbacks for selection. - Allow the handling of more than 255 CPUs without a virtualized IOMMU when the hypervisor supports it. This has made been possible by the above modifications and also simplifies the existing workaround in the HyperV specific virtual IOMMU. - Cleanup of the historical timer_works() irq flags related inconsistencies" * tag 'x86-apic-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits) x86/ioapic: Cleanup the timer_works() irqflags mess iommu/hyper-v: Remove I/O-APIC ID check from hyperv_irq_remapping_select() iommu/amd: Fix IOMMU interrupt generation in X2APIC mode iommu/amd: Don't register interrupt remapping irqdomain when IR is disabled iommu/amd: Fix union of bitfields in intcapxt support x86/ioapic: Correct the PCI/ISA trigger type selection x86/ioapic: Use I/O-APIC ID for finding irqdomain, not index x86/hyperv: Enable 15-bit APIC ID if the hypervisor supports it x86/kvm: Enable 15-bit extension when KVM_FEATURE_MSI_EXT_DEST_ID detected iommu/hyper-v: Disable IRQ pseudo-remapping if 15 bit APIC IDs are available x86/apic: Support 15 bits of APIC ID in MSI where available x86/ioapic: Handle Extended Destination ID field in RTE iommu/vt-d: Simplify intel_irq_remapping_select() x86: Kill all traces of irq_remapping_get_irq_domain() x86/ioapic: Use irq_find_matching_fwspec() to find remapping irqdomain x86/hpet: Use irq_find_matching_fwspec() to find remapping irqdomain iommu/hyper-v: Implement select() method on remapping irqdomain iommu/vt-d: Implement select() method on remapping irqdomain iommu/amd: Implement select() method on remapping irqdomain x86/apic: Add select() method on vector irqdomain ... |
||
Linus Torvalds
|
edd7ab7684 |
The new preemtible kmap_local() implementation:
- Consolidate all kmap_atomic() internals into a generic implementation which builds the base for the kmap_local() API and make the kmap_atomic() interface wrappers which handle the disabling/enabling of preemption and pagefaults. - Switch the storage from per-CPU to per task and provide scheduler support for clearing mapping when scheduling out and restoring them when scheduling back in. - Merge the migrate_disable/enable() code, which is also part of the scheduler pull request. This was required to make the kmap_local() interface available which does not disable preemption when a mapping is established. It has to disable migration instead to guarantee that the virtual address of the mapped slot is the same accross preemption. - Provide better debug facilities: guard pages and enforced utilization of the mapping mechanics on 64bit systems when the architecture allows it. - Provide the new kmap_local() API which can now be used to cleanup the kmap_atomic() usage sites all over the place. Most of the usage sites do not require the implicit disabling of preemption and pagefaults so the penalty on 64bit and 32bit non-highmem systems is removed and quite some of the code can be simplified. A wholesale conversion is not possible because some usage depends on the implicit side effects and some need to be cleaned up because they work around these side effects. The migrate disable side effect is only effective on highmem systems and when enforced debugging is enabled. On 64bit and 32bit non-highmem systems the overhead is completely avoided. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl/XyQwTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoUolD/9+R+BX96fGir+I8rG9dc3cbLw5meSi 0I/Nq3PToZMs2Iqv50DsoaPYHHz/M6fcAO9LRIgsE9jRbnY93GnsBM0wU9Y8yQaT 4wUzOG5WHaLDfqIkx/CN9coUl458oEiwOEbn79A2FmPXFzr7IpkufnV3ybGDwzwP p73bjMJMPPFrsa9ig87YiYfV/5IAZHi82PN8Cq1v4yNzgXRP3Tg6QoAuCO84ZnWF RYlrfKjcJ2xPdn+RuYyXolPtxr1hJQ0bOUpe4xu/UfeZjxZ7i1wtwLN9kWZe8CKH +x4Lz8HZZ5QMTQ9sCHOLtKzu2MceMcpISzoQH4/aFQCNMgLn1zLbS790XkYiQCuR ne9Cua+IqgYfGMG8cq8+bkU9HCNKaXqIBgPEKE/iHYVmqzCOqhW5Cogu4KFekf6V Wi7pyyUdX2en8BAWpk5NHc8de9cGcc+HXMq2NIcgXjVWvPaqRP6DeITERTZLJOmz XPxq5oPLGl7wdm7z+ICIaNApy8zuxpzb6sPLNcn7l5OeorViORlUu08AN8587wAj FiVjp6ZYomg+gyMkiNkDqFOGDH5TMENpOFoB0hNNEyJwwS0xh6CgWuwZcv+N8aPO HuS/P+tNANbD8ggT4UparXYce7YCtgOf3IG4GA3JJYvYmJ6pU+AZOWRoDScWq4o+ +jlfoJhMbtx5Gg== =n71I -----END PGP SIGNATURE----- Merge tag 'core-mm-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull kmap updates from Thomas Gleixner: "The new preemtible kmap_local() implementation: - Consolidate all kmap_atomic() internals into a generic implementation which builds the base for the kmap_local() API and make the kmap_atomic() interface wrappers which handle the disabling/enabling of preemption and pagefaults. - Switch the storage from per-CPU to per task and provide scheduler support for clearing mapping when scheduling out and restoring them when scheduling back in. - Merge the migrate_disable/enable() code, which is also part of the scheduler pull request. This was required to make the kmap_local() interface available which does not disable preemption when a mapping is established. It has to disable migration instead to guarantee that the virtual address of the mapped slot is the same across preemption. - Provide better debug facilities: guard pages and enforced utilization of the mapping mechanics on 64bit systems when the architecture allows it. - Provide the new kmap_local() API which can now be used to cleanup the kmap_atomic() usage sites all over the place. Most of the usage sites do not require the implicit disabling of preemption and pagefaults so the penalty on 64bit and 32bit non-highmem systems is removed and quite some of the code can be simplified. A wholesale conversion is not possible because some usage depends on the implicit side effects and some need to be cleaned up because they work around these side effects. The migrate disable side effect is only effective on highmem systems and when enforced debugging is enabled. On 64bit and 32bit non-highmem systems the overhead is completely avoided" * tag 'core-mm-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits) ARM: highmem: Fix cache_is_vivt() reference x86/crashdump/32: Simplify copy_oldmem_page() io-mapping: Provide iomap_local variant mm/highmem: Provide kmap_local* sched: highmem: Store local kmaps in task struct x86: Support kmap_local() forced debugging mm/highmem: Provide CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP mm/highmem: Provide and use CONFIG_DEBUG_KMAP_LOCAL microblaze/mm/highmem: Add dropped #ifdef back xtensa/mm/highmem: Make generic kmap_atomic() work correctly mm/highmem: Take kmap_high_get() properly into account highmem: High implementation details and document API Documentation/io-mapping: Remove outdated blurb io-mapping: Cleanup atomic iomap mm/highmem: Remove the old kmap_atomic cruft highmem: Get rid of kmap_types.h xtensa/mm/highmem: Switch to generic kmap atomic sparc/mm/highmem: Switch to generic kmap atomic powerpc/mm/highmem: Switch to generic kmap atomic nds32/mm/highmem: Switch to generic kmap atomic ... |
||
Linus Torvalds
|
76d4acf22b |
perf/kprobes updates:
- Make kretprobes lockless to avoid the rp->lock performance and potential lock ordering issues. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl/XvuYTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoV3XEADA3yp4ApabrdSMK+JpTM053mM3NCCk VLZEdh5+ydvPfgTWZcgLDfL4P4MVySDKf40pSVgZOA73uDWhdO4jcMoJgl9Du4Nq qfvz6Atj0a8XEgAFNh1IWGGAHydIwKOQZJyjFT5Kh94QNOErF2PJGAMnoMYpdJsj E7kgDM+vmWJk0GE+OYTzsAYQ99XhLfUAO9f8WoRirxyNgga6bu0arRYWZSX3Sg/h oDUHeizyrrURUBgxJBewCxvCsy4TTfefwZFUBLK5gm3zRJLKDT2O8wiy+KzlRQqA kYV3fSx8fYETlSOJWJC8S01MLpxslGdenIdRgNc63C021DtwMGM83FCl0DLnPMeg iX5u+0Qg77rnJ8zh0cgSxyP6EgZzrUW8+DjZagge3PAnTXwYRv95pOJahJifDVmF mo2RJ2Me+XbqeB4BYoLivvWpXdsWOvtXl3BTA6ZLV+K823lMPYcZO/cXHIUYHhtu ExrZ+aw3opt43KT5sNQmPll7d1UsMD4/761L7gysIYK0RthunmlWpAnnfLTbRdPe ELKIHcuSCGkGfRs07/oPbbOpMorhel+3alW0B6Vzar0/0nw3fPX/yPIkCh7s941o G0UIPquvBGk3u0bZKZZ7QJPjT0ktdQpQs69+J2ARXWvApAGKnkOlPsNSI9TbPE3D ZIguKqSyzqJwuA== =PDBa -----END PGP SIGNATURE----- Merge tag 'perf-kprobes-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf/kprobes updates from Thomas Gleixner: "Make kretprobes lockless to avoid the rp->lock performance and potential lock ordering issues" * tag 'perf-kprobes-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/atomics: Regenerate the atomics-check SHA1's kprobes: Replace rp->free_instance with freelist freelist: Implement lockless freelist asm-generic/atomic: Add try_cmpxchg() fallbacks kprobes: Remove kretprobe hash llist: Add nonatomic __llist_add() and __llist_dell_all() |
||
Linus Torvalds
|
1ac0884d54 |
A set of updates for entry/exit handling:
- More generalization of entry/exit functionality - The consolidation work to reclaim TIF flags on x86 and also for non-x86 specific TIF flags which are solely relevant for syscall related work and have been moved into their own storage space. The x86 specific part had to be merged in to avoid a major conflict. - The TIF_NOTIFY_SIGNAL work which replaces the inefficient signal delivery mode of task work and results in an impressive performance improvement for io_uring. The non-x86 consolidation of this is going to come seperate via Jens. - The selective syscall redirection facility which provides a clean and efficient way to support the non-Linux syscalls of WINE by catching them at syscall entry and redirecting them to the user space emulation. This can be utilized for other purposes as well and has been designed carefully to avoid overhead for the regular fastpath. This includes the core changes and the x86 support code. - Simplification of the context tracking entry/exit handling for the users of the generic entry code which guarantee the proper ordering and protection. - Preparatory changes to make the generic entry code accomodate S390 specific requirements which are mostly related to their syscall restart mechanism. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl/XoPoTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoe0tD/4jSKHIogVM9kVpiYfwjDGS1NluaBXn 71ZoASbX9GZebyGandMyF2QP1iJ24ZO0RztBwHEVH6fyomKB2iFNedssCpO9yfWV 3eFRpOvMpbszY2W2bd0QG3GrqaTttjVfB4ahkGLzqeSbchdob6hZpNDYtBZnujA6 GSnrrurfJkCGoQny+yJQYdQJXQU+BIX90B2a2Q+jW123Luy/iHXC1f/krZSA1m14 fC9xYLSUjPphTzh2ZOW+C3DgdjOL5PfAm/6F+DArt4GtLgrEGD7R74aLSFhvetky dn5QtG+yAsz1i0cc5Wu/JBcT9tOkY92rPYSyLI9bYQUSQ/bMyuprz6oYKj3dubsu ZSsKPdkNFPIniL4fLdCMWZcIXX5xgnrxKjdgXZXW3gtrcxSns8w8uED3Sh7dgE08 pgIeq67E5g/OB8kJXH1VxdewmeQb9cOmnzzHwNO7TrrGbBKjDTYHNdYOKf1dUTTK ZX1UjLfGwxTkMYAbQD1k0JGZ2OLRshzSaH5BW/ZKa3bvJW6yYOq+/YT8B8hbJ8U3 vThlO75/55IJxS5r5Y3vZd/IHdsYbPuETD+TA8tNYtPqNZasW8nnk4TYctWqzDuO /Ka1wvWYid3c6ySznQn4zSyRjr968AfHeZ9YTUMhWufy5waXVmdBMG41u3IKfsVt osyzNc4EK19/Mg== =hsjV -----END PGP SIGNATURE----- Merge tag 'core-entry-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core entry/exit updates from Thomas Gleixner: "A set of updates for entry/exit handling: - More generalization of entry/exit functionality - The consolidation work to reclaim TIF flags on x86 and also for non-x86 specific TIF flags which are solely relevant for syscall related work and have been moved into their own storage space. The x86 specific part had to be merged in to avoid a major conflict. - The TIF_NOTIFY_SIGNAL work which replaces the inefficient signal delivery mode of task work and results in an impressive performance improvement for io_uring. The non-x86 consolidation of this is going to come seperate via Jens. - The selective syscall redirection facility which provides a clean and efficient way to support the non-Linux syscalls of WINE by catching them at syscall entry and redirecting them to the user space emulation. This can be utilized for other purposes as well and has been designed carefully to avoid overhead for the regular fastpath. This includes the core changes and the x86 support code. - Simplification of the context tracking entry/exit handling for the users of the generic entry code which guarantee the proper ordering and protection. - Preparatory changes to make the generic entry code accomodate S390 specific requirements which are mostly related to their syscall restart mechanism" * tag 'core-entry-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits) entry: Add syscall_exit_to_user_mode_work() entry: Add exit_to_user_mode() wrapper entry_Add_enter_from_user_mode_wrapper entry: Rename exit_to_user_mode() entry: Rename enter_from_user_mode() docs: Document Syscall User Dispatch selftests: Add benchmark for syscall user dispatch selftests: Add kselftest for syscall user dispatch entry: Support Syscall User Dispatch on common syscall entry kernel: Implement selective syscall userspace redirection signal: Expose SYS_USER_DISPATCH si_code type x86: vdso: Expose sigreturn address on vdso to the kernel MAINTAINERS: Add entry for common entry code entry: Fix boot for !CONFIG_GENERIC_ENTRY x86: Support HAVE_CONTEXT_TRACKING_OFFSTACK context_tracking: Only define schedule_user() on !HAVE_CONTEXT_TRACKING_OFFSTACK archs sched: Detect call to schedule from critical entry code context_tracking: Don't implement exception_enter/exit() on CONFIG_HAVE_CONTEXT_TRACKING_OFFSTACK context_tracking: Introduce HAVE_CONTEXT_TRACKING_OFFSTACK x86: Reclaim unused x86 TI flags ... |
||
Palmer Dabbelt
|
7d95a88f92
|
Add and use a generic version of devmem_is_allowed()
As part of adding STRICT_DEVMEM support to the RISC-V port, Zong provided an implementation of devmem_is_allowed() that's exactly the same as the version in a handful of other ports. Rather than duplicate code, I've put a generic version of this in lib/ and used it for the RISC-V port. * palmer/generic-devmem: arm64: Use the generic devmem_is_allowed() arm: Use the generic devmem_is_allowed() RISC-V: Use the new generic devmem_is_allowed() lib: Add a generic version of devmem_is_allowed() |
||
Palmer Dabbelt
|
527701eda5
|
lib: Add a generic version of devmem_is_allowed()
As part of adding support for STRICT_DEVMEM to the RISC-V port, Zong provided a devmem_is_allowed() implementation that's exactly the same as all the others I checked. Instead I'm adding a generic version, which will soon be used. Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com> |