Core changes:
- A new PINCTRL_GROUP_DESC() infrastructure macro is added and
used in different drivers, generic group description struct
group_desc is now used all over the place.
New drivers:
- New driver for the Texas Instruments TPS6494 Power Management IC.
- New driver for the Lantic PEF2256 framer pin multiplexer.
This IC has some pins that can be reconfigured in different
ways. The actual driver comes on an immutable branch with the
net WAN parts, the IC is some latest-and-greatest serial line
funnel for e.g. wireless access points.
- New subdriver for the Samsung Exynos Auto V920 pin controller,
used for automotive applications.
- New subdriver for the Samsung "GS101" SoC pin controller, this
is the Google "Tensor" SoC used in the Google Pixel 6.
- New subdriver for the Intel Meteor Point SoC pin controller.
- New subdriver for the Qualcomm SM8650 top level (TLMM) and LPASS pin
controllers.
- New subdriver for the Qualcomm X1E80100 top level (TLMM) pin
controller.
- New subdriver for the Qualcomm SM4450 top level (TLMM) pin
controller.
- The "single" pin controller now supports the Texas Instruments
J7200 SoC.
Improvements:
- Intel has created a new (Intel-)generic pin controller driver that
is now used by all contemporary Intel platforms.
- Intel is now also making use of some cleanup helpers.
- Enble 910 Ohm bias in the Intel Tangier driver.
- The Samsung driver now suppors irq_set_affinity() in it's IRQ chip
giving support for non wake up external gpio interrupts.
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Merge tag 'pinctrl-v6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"For this kernel cycle I managed an immutable branch for the PEF2256
WAN framer that has some pin control portions. It already landed in
your tree through the net pull request but here it is mentioned again.
The most interesting is perhaps the Samsung Exynos subdrivers for the
Tensor SoC used in Google Pixel 6 and the ExynosAuto subdriver for
automotive. Along with the earlier merged Tesla FSD subdriver it shows
some of the versatile uses of the Samsung Exynos silicon. It is also
used in the latest version of Axis Communications ARTPEC chips so it
is a very widely deployed SoC family.
We also have the Intel Meteor Lake SoC which I think is for laptops.
It's a pretty interesting chip with Xe graphics and integrated PCH.
Core changes:
- A new PINCTRL_GROUP_DESC() infrastructure macro is added and used
in different drivers, generic group description struct group_desc
is now used all over the place.
New drivers:
- New driver for the Texas Instruments TPS6494 Power Management IC.
- New driver for the Lantic PEF2256 framer pin multiplexer. This IC
has some pins that can be reconfigured in different ways. The
actual driver comes on an immutable branch with the net WAN parts,
the IC is some latest-and-greatest serial line funnel for e.g.
wireless access points.
- New subdriver for the Samsung Exynos Auto V920 pin controller, used
for automotive applications.
- New subdriver for the Samsung "GS101" SoC pin controller, this is
the Google "Tensor" SoC used in the Google Pixel 6.
- New subdriver for the Intel Meteor Point SoC pin controller.
- New subdriver for the Qualcomm SM8650 top level (TLMM) and LPASS
pin controllers.
- New subdriver for the Qualcomm X1E80100 top level (TLMM) pin
controller.
- New subdriver for the Qualcomm SM4450 top level (TLMM) pin
controller.
- The "single" pin controller now supports the Texas Instruments
J7200 SoC.
Improvements:
- Intel has created a new (Intel-)generic pin controller driver that
is now used by all contemporary Intel platforms.
- Intel is now also making use of some cleanup helpers.
- Enble 910 Ohm bias in the Intel Tangier driver.
- The Samsung driver now suppors irq_set_affinity() in it's IRQ chip
giving support for non wake up external gpio interrupts"
* tag 'pinctrl-v6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (112 commits)
pinctrl: samsung: constify iomem pointers
pinctrl: cy8c95x0: Cache muxed registers
dt-bindings: pinctrl: xilinx: Rename *gpio to *gpio-grp
pinctrl: qcom: lpass-lpi: remove duplicated include
dt-bindings: pinctrl: qcom: drop common properties and allow wakeup-parent
dt-bindings: pinctrl: qcom: drop common properties
dt-bindings: pinctrl: qcom,ipq5018-tlmm: use common TLMM bindings
dt-bindings: pinctrl: qcom,x1e80100-tlmm: restrict number of interrupts
dt-bindings: pinctrl: qcom,sm8650-tlmm: restrict number of interrupts
dt-bindings: pinctrl: qcom,sm8550-tlmm: restrict number of interrupts
dt-bindings: pinctrl: qcom,sdx75-tlmm: restrict number of interrupts
dt-bindings: pinctrl: qcom,sa8775p-tlmm: restrict number of interrupts
dt-bindings: pinctrl: qcom,qdu1000-tlmm: restrict number of interrupts
dt-bindings: pinctrl: qcom: create common LPASS LPI schema
pinctrl: qcom: sm4450: dd SM4450 pinctrl driver
dt-bindings: pinctrl: qcom: Add SM4450 pinctrl
dt-bindings: pinctrl: qcom,pmic-mpp: clean up example
pinctrl: intel: Add Intel Meteor Point pin controller and GPIO support
pinctrl: renesas: rzg2l: Add input enable to the Ethernet pins
pinctrl: renesas: rzg2l: Add output enable support
...
* modernize IDA API
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Merge tag 'hsi-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi
Pull HSI update from Sebastian Reichel:
- modernize IDA API
* tag 'hsi-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi:
HSI: omap_ssi: Remove usage of the deprecated ida_simple_xx() API
- Add support for Allwinner A100 RGB LED controller
- Add support for Maxim 5970 Dual Hot-swap controller
- New Device Support
- Add support for AW20108 to Awinic LED driver
- New Functionality
- Extend support for Net speeds to include; 2.5G, 5G and 10G
- Allow tx/rx and cts/dsr/dcd/rng TTY LEDS to be turned on and off via sysfs if required
- Add support for hardware control in AW200xx
- Fix-ups
- Use safer methods for string handling
- Improve error handling; return proper error values, simplify, avoid duplicates, etc
- Replace Mutex use with the Completion mechanism
- Fix include lists; alphabetise, remove unused, explicitly add used
- Use generic platform device properties
- Use/convert to new/better APIs/helpers/MACROs instead of hand-rolling implementations
- Device Tree binding adaptions/conversions/creation
- Continue work to remove superfluous platform .remove() call-backs
- Remove superfluous/defunct code
- Trivial; whitespace, unused variables, spelling, clean-ups, etc
- Avoid unnecessary duplicate locks
- Bug Fixes
- Repair Kconfig based dependency lists
- Ensure unused dynamically allocated data is freed after use
- Fix support for brightness control
- Add missing sufficient delays during reset to ensure correct operation
- Avoid division-by-zero issues
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Merge tag 'leds-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds
Pull LED updates from Lee Jones:
"New Drivers:
- Add support for Allwinner A100 RGB LED controller
- Add support for Maxim 5970 Dual Hot-swap controller
New Device Support:
- Add support for AW20108 to Awinic LED driver
New Functionality:
- Extend support for Net speeds to include; 2.5G, 5G and 10G
- Allow tx/rx and cts/dsr/dcd/rng TTY LEDS to be turned on and off
via sysfs if required
- Add support for hardware control in AW200xx
Fix-ups:
- Use safer methods for string handling
- Improve error handling; return proper error values, simplify,
avoid duplicates, etc
- Replace Mutex use with the Completion mechanism
- Fix include lists; alphabetise, remove unused, explicitly add used
- Use generic platform device properties
- Use/convert to new/better APIs/helpers/MACROs instead of
hand-rolling implementations
- Device Tree binding adaptions/conversions/creation
- Continue work to remove superfluous platform .remove() call-backs
- Remove superfluous/defunct code
- Trivial; whitespace, unused variables, spelling, clean-ups, etc
- Avoid unnecessary duplicate locks
Bug Fixes:
- Repair Kconfig based dependency lists
- Ensure unused dynamically allocated data is freed after use
- Fix support for brightness control
- Add missing sufficient delays during reset to ensure correct
operation
- Avoid division-by-zero issues"
* tag 'leds-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (45 commits)
leds: trigger: netdev: Add core support for hw not supporting fallback to LED sw control
leds: trigger: panic: Don't register panic notifier if creating the trigger failed
leds: sun50i-a100: Convert to be agnostic to property provider
leds: max5970: Add missing headers
leds: max5970: Make use of dev_err_probe()
leds: max5970: Make use of device properties
leds: max5970: Remove unused variable
leds: rgb: Drop obsolete dependency on COMPILE_TEST
leds: sun50i-a100: Avoid division-by-zero warning
leds: trigger: Remove unused function led_trigger_rename_static()
leds: qcom-lpg: Introduce a wrapper for getting driver data from a pwm chip
leds: gpio: Add kernel log if devm_fwnode_gpiod_get() fails
dt-bindings: leds: qcom,spmi-flash-led: Fix example node name
dt-bindings: leds: aw200xx: Fix led pattern and add reg constraints
dt-bindings: leds: awinic,aw200xx: Add AW20108 device
leds: aw200xx: Add support for aw20108 device
leds: aw200xx: Improve autodim calculation method
leds: aw200xx: Enable disable_locking flag in regmap config
leds: aw200xx: Add delay after software reset
dt-bindings: leds: aw200xx: Remove property "awinic,display-rows"
...
- Add support for Qualcomm PM8937 PMIC to QCOM SPMI PMIC
- Fix-ups
- Use/convert to new/better APIs/helpers/MACROs instead of hand-rolling implementations
- Device Tree binding adaptions/conversions/creation
- Improve error handling; return proper error values, simplify, avoid duplicates, etc
- Continue work to remove superfluous platform .remove() call-backs
- Move some exported symbols into private namespaces
- Clean-up and staticify PM related operations
- Trivial; spelling, whitespace, clean-ups, etc
- Fix include lists; alphabetise, remove unused, explicitly add used
- Bug Fixes
- Use PLATFORM_DEVID_AUTO to ensure multiple duplicate devices can co-exist
- Ensure debugfs register view is correctly presented
- Fix ordering and value issues in current use of clk_register_fractional_divider()
- Repair Kconfig based dependency lists
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Merge tag 'mfd-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull mfd updates from Lee Jones:
"New Device Support:
- Add support for Qualcomm PM8937 PMIC to QCOM SPMI PMIC
Fix-ups:
- Use/convert to new/better APIs/helpers/MACROs instead of
hand-rolling implementations
- Device Tree binding adaptions/conversions/creation
- Improve error handling; return proper error values, simplify,
avoid duplicates, etc
- Continue work to remove superfluous platform .remove() call-backs
- Move some exported symbols into private namespaces
- Clean-up and staticify PM related operations
- Trivial; spelling, whitespace, clean-ups, etc
- Fix include lists; alphabetise, remove unused, explicitly add used
Bug Fixes:
- Use PLATFORM_DEVID_AUTO to ensure multiple duplicate devices can
co-exist
- Ensure debugfs register view is correctly presented
- Fix ordering and value issues in current use of
clk_register_fractional_divider()
- Repair Kconfig based dependency lists"
* tag 'mfd-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (50 commits)
mfd: ti_am335x_tscadc: Fix TI SoC dependencies
dt-bindings: mfd: sprd: Add support for UMS9620
mfd: ab8500-sysctrl: Drop ancient charger
mfd: intel-lpss: Fix the fractional clock divider flags
mfd: tps6594: Add null pointer check to tps6594_device_init()
dt-bindings: mfd: pm8008: Clean up example node names
dt-bindings: mfd: hisilicon,hi6421-spmi-pmic: Clean up example
dt-bindings: mfd: hisilicon,hi6421-spmi-pmic: Fix regulator binding
dt-bindings: mfd: hisilicon,hi6421-spmi-pmic: Fix up binding reference
mfd: da9062: Simplify obtaining I2C match data
mfd: syscon: Fix null pointer dereference in of_syscon_register()
mfd: intel-lpss: Don't fail probe on success of pci_alloc_irq_vectors()
mfd: twl6030-irq: Revert to use of_match_device()
mfd: cs42l43: Correct order of include files to be alphabetical
mfd: cs42l43: Correct SoundWire port list
mfd: Fix a few spelling mistakes in PMIC header file comments
mfd: intel-lpss: Provide Intel LPSS PM ops structure
mfd: intel-lpss: Move exported symbols to INTEL_LPSS namespace
mfd: intel-lpss: Adjust header inclusions
mfd: intel-lpss: Use device_get_match_data()
...
Correct kernel-doc through the hwspinlock core, to address build
warnings (and improve the documentation).
Drop unused compatible in the Qualcomm TCSR mutex driver.
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Merge tag 'hwlock-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux
Pull hwspinlock updates from Bjorn Andersson:
- Correct kernel-doc through the hwspinlock core, to address build
warnings (and improve the documentation)
- Drop unused compatible in the Qualcomm TCSR mutex driver
* tag 'hwlock-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux:
hwspinlock/core: fix kernel-doc warnings
hwspinlock: qcom: Remove IPQ6018 SOC specific compatible
The i.MX DSP remoteproc driver adds support for providing a resource
table, in order to enable IPC with the core.
The TI K3 DSP driver is transitioned to remove_new, error messages are
changed to use symbolic error codes, and dev_err_probe() is used where
applicable.
Support for the Qualcomm SC7280 audio, compute and WiFi co-processors
are added to the Qualcomm TrustZone based remoteproc driver.
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Merge tag 'rproc-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux
Pull remoteproc updates from Bjorn Andersson:
- The i.MX DSP remoteproc driver adds support for providing a resource
table, in order to enable IPC with the core
- The TI K3 DSP driver is transitioned to remove_new, error messages
are changed to use symbolic error codes, and dev_err_probe() is used
where applicable
- Support for the Qualcomm SC7280 audio, compute and WiFi co-processors
are added to the Qualcomm TrustZone based remoteproc driver
* tag 'rproc-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux:
remoteproc: qcom_q6v5_pas: Add SC7280 ADSP, CDSP & WPSS
dt-bindings: remoteproc: qcom: sc7180-pas: Add SC7280 compatibles
dt-bindings: remoteproc: qcom: sc7180-pas: Fix SC7280 MPSS PD-names
remoteproc: k3-dsp: Convert to platform remove callback returning void
remoteproc: k3-dsp: Use symbolic error codes in error messages
remoteproc: k3-dsp: Suppress duplicate error message in .remove()
arm64: dts: imx8mp: Add reserve-memory nodes for DSP
remoteproc: imx_dsp_rproc: Add mandatory find_loaded_rsc_table op
This make virtio free driver_override upon removal. It also updates the
rpmsg documentation after earlier API updates.
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Merge tag 'rpmsg-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux
Pull rpmsg updates from Bjorn Andersson:
"This make virtio free driver_override upon removal. It also updates
the rpmsg documentation after earlier API updates"
* tag 'rpmsg-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux:
rpmsg: virtio: Free driver_override when rpmsg_remove()
doc: rmpsg: Update with rpmsg_endpoint
i915:
- Fixes for kernel-doc warnings enforced in linux-next
- Another build warning fix for string formatting of intel_wakeref_t
- Display fixes for DP DSC BPC and C20 PLL state verification
v3d:
- register readout fix
rockchip:
- two build warning fixes
nouveau:
- fix GSP loading on Turing with different nvdec configuration
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Merge tag 'drm-next-2024-01-15-1' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"This is just a wrap up of fixes from the last few days. It has the
proper fix to the i915/xe collision, we can clean up what you did
later once rc1 lands.
Otherwise it's a few other i915, a v3d, rockchip and a nouveau fix to
make GSP load on some original Turing GPUs.
i915:
- Fixes for kernel-doc warnings enforced in linux-next
- Another build warning fix for string formatting of intel_wakeref_t
- Display fixes for DP DSC BPC and C20 PLL state verification
v3d:
- register readout fix
rockchip:
- two build warning fixes
nouveau:
- fix GSP loading on Turing with different nvdec configuration"
* tag 'drm-next-2024-01-15-1' of git://anongit.freedesktop.org/drm/drm:
nouveau/gsp: handle engines in runl without nonstall interrupts.
drm/i915/perf: reconcile Excess struct member kernel-doc warnings
drm/i915/guc: reconcile Excess struct member kernel-doc warnings
drm/i915/gt: reconcile Excess struct member kernel-doc warnings
drm/i915/gem: reconcile Excess struct member kernel-doc warnings
drm/i915/dp: Fix the max DSC bpc supported by source
drm/i915: don't make assumptions about intel_wakeref_t type
drm/i915/dp: Fix the PSR debugfs entries wrt. MST connectors
drm/i915/display: Fix C20 pll selection for state verification
drm/v3d: Fix support for register debugging on the RPi 4
drm/rockchip: vop2: Drop unused if_dclk_rate variable
drm/rockchip: vop2: Drop superfluous include
- Add debugfs-based diagnostics support to the thermal core (Daniel
Lezcano, Dan Carpenter).
- Fix a power allocator thermal governor issue preventing it from
resetting cooling devices sometimes (Di Shen).
- Simplify the thermal netlink API and clean up related code (Rafael J.
Wysocki).
- Make the Intel HFI driver support hibernation and deep suspend
properly (Ricardo Neri).
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Merge tag 'thermal-6.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more thermal control updates from Rafael Wysocki:
"These add support for debugfs-based diagnostics to the thermal core,
simplify the thermal netlink API, fix system-wide PM support in the
Intel HFI driver and clean up some code.
Specifics:
- Add debugfs-based diagnostics support to the thermal core (Daniel
Lezcano, Dan Carpenter)
- Fix a power allocator thermal governor issue preventing it from
resetting cooling devices sometimes (Di Shen)
- Simplify the thermal netlink API and clean up related code (Rafael
J. Wysocki)
- Make the Intel HFI driver support hibernation and deep suspend
properly (Ricardo Neri)"
* tag 'thermal-6.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal/debugfs: Unlock on error path in thermal_debug_tz_trip_up()
thermal: intel: hfi: Add syscore callbacks for system-wide PM
thermal: gov_power_allocator: avoid inability to reset a cdev
thermal: helpers: Rearrange thermal_cdev_set_cur_state()
thermal: netlink: Rework notify API for cooling devices
thermal: core: Use kstrdup_const() during cooling device registration
thermal/debugfs: Add thermal debugfs information for mitigation episodes
thermal/debugfs: Add thermal cooling device debugfs information
thermal: netlink: Pass thermal zone pointer to notify routines
thermal: netlink: Drop thermal_notify_tz_trip_add/delete()
thermal: netlink: Pass pointers to thermal_notify_tz_trip_up/down()
thermal: netlink: Pass pointers to thermal_notify_tz_trip_change()
- Make pnp_bus_type const (Greg Kroah-Hartman).
- Add ACPI IRQ management quirks for ASUS ExpertBook B1502CGA and ASUS
Vivobook E1504GA and E1504GAB (Ben Mayo, Michael Maltsev).
- Add new MADT GICC/GICR/ITS non-coherent flags and GICC online capable
bit handling to ACPICA (Lorenzo Pieralisi).
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Merge tag 'acpi-6.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"These add support for new MADT flags to ACPICA, constify the PNP bus
type structure and add new ACPI IRQ management quirks.
Specifics:
- Make pnp_bus_type const (Greg Kroah-Hartman)
- Add ACPI IRQ management quirks for ASUS ExpertBook B1502CGA and
ASUS Vivobook E1504GA and E1504GAB (Ben Mayo, Michael Maltsev)
- Add new MADT GICC/GICR/ITS non-coherent flags and GICC online
capable bit handling to ACPICA (Lorenzo Pieralisi)"
* tag 'acpi-6.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPICA: MADT: Add new MADT GICC/GICR/ITS non-coherent flags handling
ACPICA: MADT: Add GICC online capable bit handling
ACPI: resource: Skip IRQ override on ASUS ExpertBook B1502CGA
ACPI: resource: Add DMI quirks for ASUS Vivobook E1504GA and E1504GAB
PNP: make pnp_bus_type const
- Restore the system-wide asynchronous device resume optimization
removed by a recent concurrency fix (Rafael J. Wysocki).
- Make the intel_pstate cpufreq driver allow Meteor Lake systems to run
at somewhat higher frequencies (Srinivas Pandruvada).
- Make the PM QoS core code use kcalloc() for array allocation (Erick
Archer).
- Fix two PM-related typos in admin-guide (Erwan Velu).
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Merge tag 'pm-6.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"These restore the asynchronous device resume optimization removed by
the previous PM merge, make the intel_pstate driver work better on
Meteor Lake systems, optimize the PM QoS core code slightly and fix up
typos in admin-guide.
Specifics:
- Restore the system-wide asynchronous device resume optimization
removed by a recent concurrency fix (Rafael J. Wysocki)
- Make the intel_pstate cpufreq driver allow Meteor Lake systems to
run at somewhat higher frequencies (Srinivas Pandruvada)
- Make the PM QoS core code use kcalloc() for array allocation (Erick
Archer)
- Fix two PM-related typos in admin-guide (Erwan Velu)"
* tag 'pm-6.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: sleep: Restore asynchronous device resume optimization
Documentation: admin-guide: PM: Fix two typos
cpufreq: intel_pstate: Update hybrid scaling factor for Meteor Lake
PM: QoS: Use kcalloc() instead of kzalloc()
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Merge tag 'for-linus-6.8-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross:
- update some Xen PV interface related headers
- fix some kernel-doc comments in the xenbus driver
- fix the Xen gntdev driver to not access the struct page of pages
imported from a DMA-buf
* tag 'for-linus-6.8-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/gntdev: Fix the abuse of underlying struct page in DMA-buf import
xen/xenbus: client: fix kernel-doc comments
xen: update PV-device interface headers
- Use memdup_array_user() to harden against overflow.
- Unconditionally advertise KVM_CAP_DEVICE_CTRL for all architectures.
- Clean up Kconfigs that all KVM architectures were selecting
- New functionality around "guest_memfd", a new userspace API that
creates an anonymous file and returns a file descriptor that refers
to it. guest_memfd files are bound to their owning virtual machine,
cannot be mapped, read, or written by userspace, and cannot be resized.
guest_memfd files do however support PUNCH_HOLE, which can be used to
switch a memory area between guest_memfd and regular anonymous memory.
- New ioctl KVM_SET_MEMORY_ATTRIBUTES allowing userspace to specify
per-page attributes for a given page of guest memory; right now the
only attribute is whether the guest expects to access memory via
guest_memfd or not, which in Confidential SVMs backed by SEV-SNP,
TDX or ARM64 pKVM is checked by firmware or hypervisor that guarantees
confidentiality (AMD PSP, Intel TDX module, or EL2 in the case of pKVM).
x86:
- Support for "software-protected VMs" that can use the new guest_memfd
and page attributes infrastructure. This is mostly useful for testing,
since there is no pKVM-like infrastructure to provide a meaningfully
reduced TCB.
- Fix a relatively benign off-by-one error when splitting huge pages during
CLEAR_DIRTY_LOG.
- Fix a bug where KVM could incorrectly test-and-clear dirty bits in non-leaf
TDP MMU SPTEs if a racing thread replaces a huge SPTE with a non-huge SPTE.
- Use more generic lockdep assertions in paths that don't actually care
about whether the caller is a reader or a writer.
- let Xen guests opt out of having PV clock reported as "based on a stable TSC",
because some of them don't expect the "TSC stable" bit (added to the pvclock
ABI by KVM, but never set by Xen) to be set.
- Revert a bogus, made-up nested SVM consistency check for TLB_CONTROL.
- Advertise flush-by-ASID support for nSVM unconditionally, as KVM always
flushes on nested transitions, i.e. always satisfies flush requests. This
allows running bleeding edge versions of VMware Workstation on top of KVM.
- Sanity check that the CPU supports flush-by-ASID when enabling SEV support.
- On AMD machines with vNMI, always rely on hardware instead of intercepting
IRET in some cases to detect unmasking of NMIs
- Support for virtualizing Linear Address Masking (LAM)
- Fix a variety of vPMU bugs where KVM fail to stop/reset counters and other state
prior to refreshing the vPMU model.
- Fix a double-overflow PMU bug by tracking emulated counter events using a
dedicated field instead of snapshotting the "previous" counter. If the
hardware PMC count triggers overflow that is recognized in the same VM-Exit
that KVM manually bumps an event count, KVM would pend PMIs for both the
hardware-triggered overflow and for KVM-triggered overflow.
- Turn off KVM_WERROR by default for all configs so that it's not
inadvertantly enabled by non-KVM developers, which can be problematic for
subsystems that require no regressions for W=1 builds.
- Advertise all of the host-supported CPUID bits that enumerate IA32_SPEC_CTRL
"features".
- Don't force a masterclock update when a vCPU synchronizes to the current TSC
generation, as updating the masterclock can cause kvmclock's time to "jump"
unexpectedly, e.g. when userspace hotplugs a pre-created vCPU.
- Use RIP-relative address to read kvm_rebooting in the VM-Enter fault paths,
partly as a super minor optimization, but mostly to make KVM play nice with
position independent executable builds.
- Guard KVM-on-HyperV's range-based TLB flush hooks with an #ifdef on
CONFIG_HYPERV as a minor optimization, and to self-document the code.
- Add CONFIG_KVM_HYPERV to allow disabling KVM support for HyperV "emulation"
at build time.
ARM64:
- LPA2 support, adding 52bit IPA/PA capability for 4kB and 16kB
base granule sizes. Branch shared with the arm64 tree.
- Large Fine-Grained Trap rework, bringing some sanity to the
feature, although there is more to come. This comes with
a prefix branch shared with the arm64 tree.
- Some additional Nested Virtualization groundwork, mostly
introducing the NV2 VNCR support and retargetting the NV
support to that version of the architecture.
- A small set of vgic fixes and associated cleanups.
Loongarch:
- Optimization for memslot hugepage checking
- Cleanup and fix some HW/SW timer issues
- Add LSX/LASX (128bit/256bit SIMD) support
RISC-V:
- KVM_GET_REG_LIST improvement for vector registers
- Generate ISA extension reg_list using macros in get-reg-list selftest
- Support for reporting steal time along with selftest
s390:
- Bugfixes
Selftests:
- Fix an annoying goof where the NX hugepage test prints out garbage
instead of the magic token needed to run the test.
- Fix build errors when a header is delete/moved due to a missing flag
in the Makefile.
- Detect if KVM bugged/killed a selftest's VM and print out a helpful
message instead of complaining that a random ioctl() failed.
- Annotate the guest printf/assert helpers with __printf(), and fix the
various bugs that were lurking due to lack of said annotation.
There are two non-KVM patches buried in the middle of guest_memfd support:
fs: Rename anon_inode_getfile_secure() and anon_inode_getfd_secure()
mm: Add AS_UNMOVABLE to mark mapping as completely unmovable
The first is small and mostly suggested-by Christian Brauner; the second
a bit less so but it was written by an mm person (Vlastimil Babka).
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"Generic:
- Use memdup_array_user() to harden against overflow.
- Unconditionally advertise KVM_CAP_DEVICE_CTRL for all
architectures.
- Clean up Kconfigs that all KVM architectures were selecting
- New functionality around "guest_memfd", a new userspace API that
creates an anonymous file and returns a file descriptor that refers
to it. guest_memfd files are bound to their owning virtual machine,
cannot be mapped, read, or written by userspace, and cannot be
resized. guest_memfd files do however support PUNCH_HOLE, which can
be used to switch a memory area between guest_memfd and regular
anonymous memory.
- New ioctl KVM_SET_MEMORY_ATTRIBUTES allowing userspace to specify
per-page attributes for a given page of guest memory; right now the
only attribute is whether the guest expects to access memory via
guest_memfd or not, which in Confidential SVMs backed by SEV-SNP,
TDX or ARM64 pKVM is checked by firmware or hypervisor that
guarantees confidentiality (AMD PSP, Intel TDX module, or EL2 in
the case of pKVM).
x86:
- Support for "software-protected VMs" that can use the new
guest_memfd and page attributes infrastructure. This is mostly
useful for testing, since there is no pKVM-like infrastructure to
provide a meaningfully reduced TCB.
- Fix a relatively benign off-by-one error when splitting huge pages
during CLEAR_DIRTY_LOG.
- Fix a bug where KVM could incorrectly test-and-clear dirty bits in
non-leaf TDP MMU SPTEs if a racing thread replaces a huge SPTE with
a non-huge SPTE.
- Use more generic lockdep assertions in paths that don't actually
care about whether the caller is a reader or a writer.
- let Xen guests opt out of having PV clock reported as "based on a
stable TSC", because some of them don't expect the "TSC stable" bit
(added to the pvclock ABI by KVM, but never set by Xen) to be set.
- Revert a bogus, made-up nested SVM consistency check for
TLB_CONTROL.
- Advertise flush-by-ASID support for nSVM unconditionally, as KVM
always flushes on nested transitions, i.e. always satisfies flush
requests. This allows running bleeding edge versions of VMware
Workstation on top of KVM.
- Sanity check that the CPU supports flush-by-ASID when enabling SEV
support.
- On AMD machines with vNMI, always rely on hardware instead of
intercepting IRET in some cases to detect unmasking of NMIs
- Support for virtualizing Linear Address Masking (LAM)
- Fix a variety of vPMU bugs where KVM fail to stop/reset counters
and other state prior to refreshing the vPMU model.
- Fix a double-overflow PMU bug by tracking emulated counter events
using a dedicated field instead of snapshotting the "previous"
counter. If the hardware PMC count triggers overflow that is
recognized in the same VM-Exit that KVM manually bumps an event
count, KVM would pend PMIs for both the hardware-triggered overflow
and for KVM-triggered overflow.
- Turn off KVM_WERROR by default for all configs so that it's not
inadvertantly enabled by non-KVM developers, which can be
problematic for subsystems that require no regressions for W=1
builds.
- Advertise all of the host-supported CPUID bits that enumerate
IA32_SPEC_CTRL "features".
- Don't force a masterclock update when a vCPU synchronizes to the
current TSC generation, as updating the masterclock can cause
kvmclock's time to "jump" unexpectedly, e.g. when userspace
hotplugs a pre-created vCPU.
- Use RIP-relative address to read kvm_rebooting in the VM-Enter
fault paths, partly as a super minor optimization, but mostly to
make KVM play nice with position independent executable builds.
- Guard KVM-on-HyperV's range-based TLB flush hooks with an #ifdef on
CONFIG_HYPERV as a minor optimization, and to self-document the
code.
- Add CONFIG_KVM_HYPERV to allow disabling KVM support for HyperV
"emulation" at build time.
ARM64:
- LPA2 support, adding 52bit IPA/PA capability for 4kB and 16kB base
granule sizes. Branch shared with the arm64 tree.
- Large Fine-Grained Trap rework, bringing some sanity to the
feature, although there is more to come. This comes with a prefix
branch shared with the arm64 tree.
- Some additional Nested Virtualization groundwork, mostly
introducing the NV2 VNCR support and retargetting the NV support to
that version of the architecture.
- A small set of vgic fixes and associated cleanups.
Loongarch:
- Optimization for memslot hugepage checking
- Cleanup and fix some HW/SW timer issues
- Add LSX/LASX (128bit/256bit SIMD) support
RISC-V:
- KVM_GET_REG_LIST improvement for vector registers
- Generate ISA extension reg_list using macros in get-reg-list
selftest
- Support for reporting steal time along with selftest
s390:
- Bugfixes
Selftests:
- Fix an annoying goof where the NX hugepage test prints out garbage
instead of the magic token needed to run the test.
- Fix build errors when a header is delete/moved due to a missing
flag in the Makefile.
- Detect if KVM bugged/killed a selftest's VM and print out a helpful
message instead of complaining that a random ioctl() failed.
- Annotate the guest printf/assert helpers with __printf(), and fix
the various bugs that were lurking due to lack of said annotation"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (185 commits)
x86/kvm: Do not try to disable kvmclock if it was not enabled
KVM: x86: add missing "depends on KVM"
KVM: fix direction of dependency on MMU notifiers
KVM: introduce CONFIG_KVM_COMMON
KVM: arm64: Add missing memory barriers when switching to pKVM's hyp pgd
KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache
RISC-V: KVM: selftests: Add get-reg-list test for STA registers
RISC-V: KVM: selftests: Add steal_time test support
RISC-V: KVM: selftests: Add guest_sbi_probe_extension
RISC-V: KVM: selftests: Move sbi_ecall to processor.c
RISC-V: KVM: Implement SBI STA extension
RISC-V: KVM: Add support for SBI STA registers
RISC-V: KVM: Add support for SBI extension registers
RISC-V: KVM: Add SBI STA info to vcpu_arch
RISC-V: KVM: Add steal-update vcpu request
RISC-V: KVM: Add SBI STA extension skeleton
RISC-V: paravirt: Implement steal-time support
RISC-V: Add SBI STA extension definitions
RISC-V: paravirt: Add skeleton for pv-time support
RISC-V: KVM: Fix indentation in kvm_riscv_vcpu_set_reg_csr()
...
- Fix PDC address calculation with narrow firmware (64-bit kernel
on 32-bit firmware)
- Fix kthread which checks power button get started on qemu too
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Merge tag 'parisc-for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"Two small fixes for the parisc architecture:
- Fix PDC address calculation with narrow firmware (64-bit kernel on
32-bit firmware)
- Fix kthread which checks power button get started on qemu too"
* tag 'parisc-for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc/power: Fix power soft-off button emulation on qemu
parisc/firmware: Fix F-extend for PDC addresses
- small cleanups in the xtensa PCI and asmmacro code
- fix kernel build with FDPIC toolchain
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Merge tag 'xtensa-20240117' of https://github.com/jcmvbkbc/linux-xtensa
Pull Xtensa updates from Max Filippov:
- small cleanups in the xtensa PCI and asmmacro code
- fix kernel build with FDPIC toolchain
* tag 'xtensa-20240117' of https://github.com/jcmvbkbc/linux-xtensa:
xtensa: don't produce FDPIC output with fdpic toolchain
xtensa: Use PCI_HEADER_TYPE_MFD instead of literal
xtensa: replace <asm-generic/export.h> with <linux/export.h>
xtensa: fix variants path in the Kconfig help
Development updates for v6.8-rc1
- add missing neon instructions for the neon support hook
- arrange for davinci to select PINCTRL
- try VMA lock-base page fault handling first
- use memblock_alloc_try_nid_raw() for kasan shadow page
- dma: use kvzalloc() rather than kzalloc()/vzalloc()
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- add missing neon instructions for the neon support hook
- arrange for davinci to select PINCTRL
- try VMA lock-base page fault handling first
- use memblock_alloc_try_nid_raw() for kasan shadow page
- dma: use kvzalloc() rather than kzalloc()/vzalloc()
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9331/1: ARM/dma-mapping: replace kzalloc() and vzalloc() with kvzalloc()
ARM: 9329/1: kasan: Use memblock_alloc_try_nid_raw for shadow page
ARM: 9328/1: mm: try VMA lock-based page fault handling first
ARM: 9330/1: davinci: also select PINCTRL
ARM: 9327/1: vfp: Add missing VFP instructions to neon_support_hook
- Enable NFS, Marvell phy
- Sync defconfig with the latest Kconfig layout
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Merge tag 'microblaze-v6.8' of git://git.monstr.eu/linux-2.6-microblaze
Pull microblaze updates from Michal Simek:
"Just defconfig updates:
- enable NFS, Marvell phy
- sync defconfig with the latest Kconfig layout"
* tag 'microblaze-v6.8' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: defconfig: Enable the Marvell phy driver
microblaze: Enable options to mount a rootfs via NFS
microblaze: Align defconfig with latest Kconfig layout
* Support for many new extensions in hwprobe, along with a handful of
cleanups.
* Various cleanups to our page table handling code, so we alwayse use
{READ,WRITE}_ONCE.
* Support for the which-cpus flavor of hwprobe.
* Support for XIP kernels has been resurrected.
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Merge tag 'riscv-for-linus-6.8-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Palmer Dabbelt:
- Support for many new extensions in hwprobe, along with a handful of
cleanups
- Various cleanups to our page table handling code, so we alwayse use
{READ,WRITE}_ONCE
- Support for the which-cpus flavor of hwprobe
- Support for XIP kernels has been resurrected
* tag 'riscv-for-linus-6.8-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (52 commits)
riscv: hwprobe: export Zicond extension
riscv: hwprobe: export Zacas ISA extension
riscv: add ISA extension parsing for Zacas
dt-bindings: riscv: add Zacas ISA extension description
riscv: hwprobe: export Ztso ISA extension
riscv: add ISA extension parsing for Ztso
use linux/export.h rather than asm-generic/export.h
riscv: Remove SHADOW_OVERFLOW_STACK_SIZE macro
riscv; fix __user annotation in save_v_state()
riscv: fix __user annotation in traps_misaligned.c
riscv: Select ARCH_WANTS_NO_INSTR
riscv: Remove obsolete rv32_defconfig file
riscv: Allow disabling of BUILTIN_DTB for XIP
riscv: Fixed wrong register in XIP_FIXUP_FLASH_OFFSET macro
riscv: Make XIP bootable again
riscv: Fix set_direct_map_default_noflush() to reset _PAGE_EXEC
riscv: Fix module_alloc() that did not reset the linear mapping permissions
riscv: Fix wrong usage of lm_alias() when splitting a huge linear mapping
riscv: Check if the code to patch lies in the exit section
riscv: Use the same CPU operations for all CPUs
...
- Clang coverage support
- Many cleanups from Benjamin Berg
- Various minor fixes
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Merge tag 'uml-for-linus-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull UML updates from Richard Weinberger:
- Clang coverage support
- Many cleanups from Benjamin Berg
- Various minor fixes
* tag 'uml-for-linus-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux:
um: Mark 32bit syscall helpers as clobbering memory
um: Remove unused register save/restore functions
um: Rely on PTRACE_SETREGSET to set FS/GS base registers
Documentation: kunit: Add clang UML coverage example
arch: um: Add Clang coverage support
um: time-travel: fix time corruption
um: net: Fix return type of uml_net_start_xmit()
um: Always inline stub functions
um: Do not use printk in userspace trampoline
um: Reap winch thread if it fails
um: Do not use printk in SIGWINCH helper thread
um: Don't use vfprintf() for os_info()
um: Make errors to stop ptraced child fatal during startup
um: Drop NULL check from start_userspace
um: Drop support for hosts without SYSEMU_SINGLESTEP support
um: document arch_futex_atomic_op_inuser
um: mmu: remove stub_pages
um: Fix naming clash between UML and scheduler
um: virt-pci: fix platform map offset
UBI:
- Use in-tree fault injection framework and add new injection types
- Fix for a memory leak in the block driver
UBIFS:
- kernel-doc fixes
- Various minor fixes
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Merge tag 'ubifs-for-linus-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs
Pull UBI and UBIFS updates from Richard Weinberger:
"UBI:
- Use in-tree fault injection framework and add new injection types
- Fix for a memory leak in the block driver
UBIFS:
- kernel-doc fixes
- Various minor fixes"
* tag 'ubifs-for-linus-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
ubi: block: fix memleak in ubiblock_create()
ubifs: fix kernel-doc warnings
mtd: Add several functions to the fail_function list
ubi: Reserve sufficient buffer length for the input mask
ubi: Add six fault injection type for testing
ubi: Split io_failures into write_failure and erase_failure
ubi: Use the fault injection framework to enhance the fault injection capability
ubifs: ubifs_symlink: Fix memleak of inode->i_link in error path
ubifs: Check @c->dirty_[n|p]n_cnt and @c->nroot state under @c->lp_mutex
ubifs: describe function parameters
ubifs: auth.c: fix kernel-doc function prototype warning
ubifs: use crypto_shash_tfm_digest() in ubifs_hmac_wkm()
Fix a bug in my change to how f2fs frees its superblock info (which was
part of changing the timing of fscrypt keyring destruction).
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Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux
Pull fscrypt fix from Eric Biggers:
"Fix a bug in my change to how f2fs frees its superblock info (which
was part of changing the timing of fscrypt keyring destruction)"
* tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux:
f2fs: fix double free of f2fs_sb_info
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Merge tag 'vfs-6.8-rc1.fixes' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
"This contains two fixes for the current merge window. The listmount
changes that you requested and a fix for a fsnotify performance
regression:
- The proposed listmount changes are currently under my authorship. I
wasn't sure whether you'd wanted to be author as the patch wasn't
signed off. If you do I'm happy if you just apply your own patch.
I've tested the patch with my sh4 cross-build setup. And confirmed
that a) the build failure with sh on current upstream is
reproducible and that b) the proposed patch fixes the build
failure. That should only leave the task of fixing put_user on sh.
- The fsnotify regression was caused by moving one of the hooks out
of the security hook in preparation for other fsnotify work. This
meant that CONFIG_SECURITY would have compiled out the fsnotify
hook before but didn't do so now.
That lead to up to 6% performance regression in some io_uring
workloads that compile all fsnotify and security checks out. Fix
this by making sure that the relevant hooks are covered by the
already existing CONFIG_FANOTIFY_ACCESS_PERMISSIONS where the
relevant hook belongs"
* tag 'vfs-6.8-rc1.fixes' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs:
fs: rework listmount() implementation
fsnotify: compile out fsnotify permission hooks if !FANOTIFY_ACCESS_PERMISSIONS
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Merge tag 'mm-hotfixes-stable-2024-01-12-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc hotfixes from Andrew Morton:
"For once not mostly MM-related.
17 hotfixes. 10 address post-6.7 issues and the other 7 are cc:stable"
* tag 'mm-hotfixes-stable-2024-01-12-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
userfaultfd: avoid huge_zero_page in UFFDIO_MOVE
MAINTAINERS: add entry for shrinker
selftests: mm: hugepage-vmemmap fails on 64K page size systems
mm/memory_hotplug: fix memmap_on_memory sysfs value retrieval
mailmap: switch email for Tanzir Hasan
mailmap: add old address mappings for Randy
kernel/crash_core.c: make __crash_hotplug_lock static
efi: disable mirror feature during crashkernel
kexec: do syscore_shutdown() in kernel_kexec
mailmap: update entry for Manivannan Sadhasivam
fs/proc/task_mmu: move mmu notification mechanism inside mm lock
mm: zswap: switch maintainers to recently active developers and reviewers
scripts/decode_stacktrace.sh: optionally use LLVM utilities
kasan: avoid resetting aux_lock
lib/Kconfig.debug: disable CONFIG_DEBUG_INFO_BTF for Hexagon
MAINTAINERS: update LTP maintainers
kdump: defer the insertion of crashkernel resources
When appending "[defcmd]" to 'kdb_prompt_str', the size of the string
already in the buffer should be taken into account.
An option could be to switch from strncat() to strlcat() which does the
correct test to avoid such an overflow.
However, this actually looks as dead code, because 'defcmd_in_progress'
can't be true here.
See a more detailed explanation at [1].
[1]: https://lore.kernel.org/all/CAD=FV=WSh7wKN7Yp-3wWiDgX4E3isQ8uh0LCzTmd1v9Cg9j+nQ@mail.gmail.com/
Fixes: 5d5314d679 ("kdb: core for kgdb back end (1 of 2)")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
When a queue is unbound from the vfio_ap device driver, it is reset to
ensure its crypto data is not leaked when it is bound to another device
driver. If the queue is unbound due to the fact that the adapter or domain
was removed from the host's AP configuration, then attempting to reset it
will fail with response code 01 (APID not valid) getting returned from the
reset command. Let's ensure that the queue is assigned to the host's
configuration before resetting it.
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: "Jason J. Herne" <jjherne@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Fixes: eeb386aeb5 ("s390/vfio-ap: handle config changed and scan complete notification")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240115185441.31526-7-akrowiak@linux.ibm.com
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
When a queue is unbound from the vfio_ap device driver, if that queue is
assigned to a guest's AP configuration, its associated adapter is removed
because queues are defined to a guest via a matrix of adapters and
domains; so, it is not possible to remove a single queue.
If an adapter is removed from the guest's AP configuration, all associated
queues must be reset to prevent leaking crypto data should any of them be
assigned to a different guest or device driver. The one caveat is that if
the queue is being removed because the adapter or domain has been removed
from the host's AP configuration, then an attempt to reset the queue will
fail with response code 01, AP-queue number not valid; so resetting these
queues should be skipped.
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Fixes: 09d31ff787 ("s390/vfio-ap: hot plug/unplug of AP devices when probed/removed")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240115185441.31526-6-akrowiak@linux.ibm.com
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
When filtering the adapters from the configuration profile for a guest to
create or update a guest's AP configuration, if the APID of an adapter and
the APQI of a domain identify a queue device that is not bound to the
vfio_ap device driver, the APID of the adapter will be filtered because an
individual APQN can not be filtered due to the fact the APQNs are assigned
to an AP configuration as a matrix of APIDs and APQIs. Consequently, a
guest will not have access to all of the queues associated with the
filtered adapter. If the queues are subsequently made available again to
the guest, they should re-appear in a reset state; so, let's make sure all
queues associated with an adapter unplugged from the guest are reset.
In order to identify the set of queues that need to be reset, let's allow a
vfio_ap_queue object to be simultaneously stored in both a hashtable and a
list: A hashtable used to store all of the queues assigned
to a matrix mdev; and/or, a list used to store a subset of the queues that
need to be reset. For example, when an adapter is hot unplugged from a
guest, all guest queues associated with that adapter must be reset. Since
that may be a subset of those assigned to the matrix mdev, they can be
stored in a list that can be passed to the vfio_ap_mdev_reset_queues
function.
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Fixes: 48cae940c3 ("s390/vfio-ap: refresh guest's APCB by filtering AP resources assigned to mdev")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240115185441.31526-5-akrowiak@linux.ibm.com
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
When adapters and/or domains are added to the host's AP configuration, this
may result in multiple queue devices getting created and probed by the
vfio_ap device driver. For each queue device probed, the matrix of adapters
and domains assigned to a matrix mdev will be filtered to update the
guest's APCB. If any adapters or domains get added to or removed from the
APCB, the guest's AP configuration will be dynamically updated (i.e., hot
plug/unplug). To dynamically update the guest's configuration, its VCPUs
must be taken out of SIE for the period of time it takes to make the
update. This is disruptive to the guest's operation and if there are many
queues probed due to a change in the host's AP configuration, this could be
troublesome. The problem is exacerbated by the fact that the
'on_scan_complete' callback also filters the mdev's matrix and updates
the guest's AP configuration.
In order to reduce the potential amount of disruption to the guest that may
result from a change to the host's AP configuration, let's bypass the
filtering of the matrix and updating of the guest's AP configuration in the
probe callback - if due to a host config change - and defer it until the
'on_scan_complete' callback is invoked after the AP bus finishes its device
scan operation. This way the filtering and updating will be performed only
once regardless of the number of queues added.
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Fixes: 48cae940c3 ("s390/vfio-ap: refresh guest's APCB by filtering AP resources assigned to mdev")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240115185441.31526-4-akrowiak@linux.ibm.com
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
While filtering the mdev matrix, it doesn't make sense - and will have
unexpected results - to filter an APID from the matrix if the APID or one
of the associated APQIs is not in the host's AP configuration. There are
two reasons for this:
1. An adapter or domain that is not in the host's AP configuration can be
assigned to the matrix; this is known as over-provisioning. Queue
devices, however, are only created for adapters and domains in the
host's AP configuration, so there will be no queues associated with an
over-provisioned adapter or domain to filter.
2. The adapter or domain may have been externally removed from the host's
configuration via an SE or HMC attached to a DPM enabled LPAR. In this
case, the vfio_ap device driver would have been notified by the AP bus
via the on_config_changed callback and the adapter or domain would
have already been filtered.
Since the matrix_mdev->shadow_apcb.apm and matrix_mdev->shadow_apcb.aqm are
copied from the mdev matrix sans the APIDs and APQIs not in the host's AP
configuration, let's loop over those bitmaps instead of those assigned to
the matrix.
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Fixes: 48cae940c3 ("s390/vfio-ap: refresh guest's APCB by filtering AP resources assigned to mdev")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240115185441.31526-3-akrowiak@linux.ibm.com
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
The vfio_ap_mdev_filter_matrix function is called whenever a new adapter or
domain is assigned to the mdev. The purpose of the function is to update
the guest's AP configuration by filtering the matrix of adapters and
domains assigned to the mdev. When an adapter or domain is assigned, only
the APQNs associated with the APID of the new adapter or APQI of the new
domain are inspected. If an APQN does not reference a queue device bound to
the vfio_ap device driver, then it's APID will be filtered from the mdev's
matrix when updating the guest's AP configuration.
Inspecting only the APID of the new adapter or APQI of the new domain will
result in passing AP queues through to a guest that are not bound to the
vfio_ap device driver under certain circumstances. Consider the following:
guest's AP configuration (all also assigned to the mdev's matrix):
14.0004
14.0005
14.0006
16.0004
16.0005
16.0006
unassign domain 4
unbind queue 16.0005
assign domain 4
When domain 4 is re-assigned, since only domain 4 will be inspected, the
APQNs that will be examined will be:
14.0004
16.0004
Since both of those APQNs reference queue devices that are bound to the
vfio_ap device driver, nothing will get filtered from the mdev's matrix
when updating the guest's AP configuration. Consequently, queue 16.0005
will get passed through despite not being bound to the driver. This
violates the linux device model requirement that a guest shall only be
given access to devices bound to the device driver facilitating their
pass-through.
To resolve this problem, every adapter and domain assigned to the mdev will
be inspected when filtering the mdev's matrix.
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Fixes: 48cae940c3 ("s390/vfio-ap: refresh guest's APCB by filtering AP resources assigned to mdev")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240115185441.31526-2-akrowiak@linux.ibm.com
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Thank you Wenjia for your support, welcome Thorsten!
Acked-by: Wenjia Zhang <wenjia@linux.ibm.com>
Acked-by: Thorsten Winkler <twinkler@linux.ibm.com>
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Inside decrement_ttl() upon discovering that the packet ttl has exceeded,
__IP_INC_STATS and __IP6_INC_STATS macros can be called from preemptible
context having the following backtrace:
check_preemption_disabled: 48 callbacks suppressed
BUG: using __this_cpu_add() in preemptible [00000000] code: curl/1177
caller is decrement_ttl+0x217/0x830
CPU: 5 PID: 1177 Comm: curl Not tainted 6.7.0+ #34
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0xbd/0xe0
check_preemption_disabled+0xd1/0xe0
decrement_ttl+0x217/0x830
__ip_vs_get_out_rt+0x4e0/0x1ef0
ip_vs_nat_xmit+0x205/0xcd0
ip_vs_in_hook+0x9b1/0x26a0
nf_hook_slow+0xc2/0x210
nf_hook+0x1fb/0x770
__ip_local_out+0x33b/0x640
ip_local_out+0x2a/0x490
__ip_queue_xmit+0x990/0x1d10
__tcp_transmit_skb+0x288b/0x3d10
tcp_connect+0x3466/0x5180
tcp_v4_connect+0x1535/0x1bb0
__inet_stream_connect+0x40d/0x1040
inet_stream_connect+0x57/0xa0
__sys_connect_file+0x162/0x1a0
__sys_connect+0x137/0x160
__x64_sys_connect+0x72/0xb0
do_syscall_64+0x6f/0x140
entry_SYSCALL_64_after_hwframe+0x6e/0x76
RIP: 0033:0x7fe6dbbc34e0
Use the corresponding preemption-aware variants: IP_INC_STATS and
IP6_INC_STATS.
Found by Linux Verification Center (linuxtesting.org).
Fixes: 8d8e20e2d7 ("ipvs: Decrement ttl")
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Acked-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Simon Horman <horms@kernel.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
It is still possible to set on the NFT_SET_CONCAT flag by specifying a
set size and no field description, report EINVAL in such case.
Fixes: 1b6345d416 ("netfilter: nf_tables: check NFT_SET_CONCAT flag if field_count is specified")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Delete from packet path relies on the garbage collector to purge
elements with NFT_SET_ELEM_DEAD_BIT on.
Skip these dead elements from nf_tables_dump_setelem() path, I very
rarely see tests/shell/testcases/maps/typeof_maps_add_delete reports
[DUMP FAILED] showing a mismatch in the expected output with an element
that should not be there.
If the netlink dump happens before GC worker run, it might show dead
elements in the ruleset listing.
nft_rhash_get() already skips dead elements in nft_rhash_cmp(),
therefore, it already does not show the element when getting a single
element via netlink control plane.
Fixes: 5f68718b34 ("netfilter: nf_tables: GC transaction API to avoid race with control plane")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The set description provides the size of each field in the set whose sum
should not mismatch the set key length, bail out otherwise.
I did not manage to crash nft_set_pipapo with mismatch fields and set key
length so far, but this is UB which must be disallowed.
Fixes: f3a2181e16 ("netfilter: nf_tables: Support for sets with multiple ranged fields")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
When deactivating the catch-all set element, check the state in the next
generation that represents this transaction.
This bug uncovered after the recent removal of the element busy mark
a2dd0233cb ("netfilter: nf_tables: remove busy mark and gc batch API").
Fixes: aaa31047a6 ("netfilter: nftables: add catch-all set element support")
Cc: stable@vger.kernel.org
Reported-by: lonial con <kongln9170@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
An skb can be added to a neigh->arp_queue while waiting for an arp
reply. Where original skb's skb->dev can be different to neigh's
neigh->dev. For instance in case of bridging dnated skb from one veth to
another, the skb would be added to a neigh->arp_queue of the bridge.
As skb->dev can be reset back to nf_bridge->physindev and used, and as
there is no explicit mechanism that prevents this physindev from been
freed under us (for instance neigh_flush_dev doesn't cleanup skbs from
different device's neigh queue) we can crash on e.g. this stack:
arp_process
neigh_update
skb = __skb_dequeue(&neigh->arp_queue)
neigh_resolve_output(..., skb)
...
br_nf_dev_xmit
br_nf_pre_routing_finish_bridge_slow
skb->dev = nf_bridge->physindev
br_handle_frame_finish
Let's use plain ifindex instead of net_device link. To peek into the
original net_device we will use dev_get_by_index_rcu(). Thus either we
get device and are safe to use it or we don't get it and drop skb.
Fixes: c4e70a87d9 ("netfilter: bridge: rename br_netfilter.c to br_netfilter_hooks.c")
Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This is a preparation patch for replacing physindev with physinif on
nf_bridge_info structure. We will use dev_get_by_index_rcu to resolve
device, when needed, and it requires net to be available.
Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
We don't really need nf_bridge variable here. And nf_bridge_info_exists
is better replacement for nf_bridge_info_get in case we are only
checking for existence.
Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
We don't use physindev in __build_packet_message except for getting
physinif from it. So let's switch to nf_bridge_get_physinif to get what
we want directly.
Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Bail out if userspace provides unsupported flags, otherwise future
extensions to the limit expression will be silently ignored by the
kernel.
Fixes: c7862a5f0d ("netfilter: nft_limit: allow to invert matching criteria")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
All existing NFT_EXPR_STATEFUL provide a .clone interface, remove
fallback to copy content of stateful expression since this is never
exercised and bail out if .clone interface is not defined.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
struct nft_expr_info allows to store up to NFT_EXPR_MAXATTR (16)
attributes when parsing netlink attributes.
Rise a warning in case there is ever a nft expression whose .maxattr
goes beyond this number of expressions, in such case, struct nft_expr_info
needs to be updated.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Report -EINVAL in case userspace provides a unsupported set backend
policy.
Fixes: c50b960ccc ("netfilter: nf_tables: implement proper set selection")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
PHC gets initialized in nsim_init_netdevsim(), which
is only called if (nsim_dev_port_is_pf()).
Create a counterpart of nsim_init_netdevsim() and
move the mock_phc_destroy() there.
This fixes a crash trying to destroy netdevsim with
VFs instantiated, as caught by running the devlink.sh test:
BUG: kernel NULL pointer dereference, address: 00000000000000b8
RIP: 0010:mock_phc_destroy+0xd/0x30
Call Trace:
<TASK>
nsim_destroy+0x4a/0x70 [netdevsim]
__nsim_dev_port_del+0x47/0x70 [netdevsim]
nsim_dev_reload_destroy+0x105/0x120 [netdevsim]
nsim_drv_remove+0x2f/0xb0 [netdevsim]
device_release_driver_internal+0x1a1/0x210
bus_remove_device+0xd5/0x120
device_del+0x159/0x490
device_unregister+0x12/0x30
del_device_store+0x11a/0x1a0 [netdevsim]
kernfs_fop_write_iter+0x130/0x1d0
vfs_write+0x30b/0x4b0
ksys_write+0x69/0xf0
do_syscall_64+0xcc/0x1e0
entry_SYSCALL_64_after_hwframe+0x6f/0x77
Fixes: b63e78fca8 ("net: netdevsim: use mock PHC driver")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
While testing the blamed commit below, I was able to miss (!)
packetdrill failures in the fastopen test-cases.
On passive fastopen the child socket is created by incoming TCP MPC syn,
allow for both MPC_SYN and MPC_ACK header.
Fixes: 724b00c129 ("mptcp: refine opt_mp_capable determination")
Reviewed-by: Matthieu Baerts <matttbe@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some DSA tagging protocols change the EtherType field in the MAC header
e.g. DSA_TAG_PROTO_(DSA/EDSA/BRCM/MTK/RTL4C_A/SJA1105). On TX these tagged
frames are ignored by the checksum offload engine and IP header checker of
some stmmac cores.
On RX, the stmmac driver wrongly assumes that checksums have been computed
for these tagged packets, and sets CHECKSUM_UNNECESSARY.
Add an additional check in the stmmac TX and RX hotpaths so that COE is
deactivated for packets with ethertypes that will not trigger the COE and
IP header checks.
Fixes: 6b2c6e4a93 ("net: stmmac: propagate feature flags to vlan")
Cc: <stable@vger.kernel.org>
Reported-by: Richard Tresidder <rtresidd@electromag.com.au>
Link: https://lore.kernel.org/netdev/e5c6c75f-2dfa-4e50-a1fb-6bf4cdb617c2@electromag.com.au/
Reported-by: Romain Gantois <romain.gantois@bootlin.com>
Link: https://lore.kernel.org/netdev/c57283ed-6b9b-b0e6-ee12-5655c1c54495@bootlin.com/
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Romain Gantois <romain.gantois@bootlin.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds