Architecturally we need to keep __gp below 0x1000000.
But because of ftrace and tracepoint support, the RO_DATA_SECTION now gets much
bigger than it was before. By moving the linkage tables before RO_DATA_SECTION
we can avoid that __gp gets positioned at a too high address.
Cc: stable@vger.kernel.org # 4.4+
Signed-off-by: Helge Deller <deller@gmx.de>
Increase the initial kernel default page mapping size for 64-bit kernels to
64 MB and for 32-bit kernels to 32 MB.
Due to the additional support of ftrace, tracepoint and huge pages the kernel
size can exceed the sizes we used up to now.
Cc: stable@vger.kernel.org # 4.4+
Signed-off-by: Helge Deller <deller@gmx.de>
This file was only including module.h for exception table related
functions. We've now separated that content out into its own file
"extable.h" so now move over to that and avoid all the extra header
content in module.h that we don't really need to compile this file.
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-parisc@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Our XSAVE features are divided into two categories: those that
generate FPU exceptions, and those that do not. MPX and pkeys do
not generate FPU exceptions and thus can not be used lazily. We
disable them when lazy mode is forced on.
We have a pair of masks to collect these two sets of features, but
XFEATURE_MASK_PKRU was added to the wrong mask: XFEATURE_MASK_LAZY.
Fix it by moving the feature to XFEATURE_MASK_EAGER.
Note: this only causes problem if you boot with lazy FPU mode
(eagerfpu=off) which is *not* the default. It also only affects
hardware which is not currently publicly available. It looks like
eager mode is going away, but we still need this patch applied
to any kernel that has protection keys and lazy mode, which is 4.6
through 4.8 at this point, and 4.9 if the lazy removal isn't sent
to Linus for 4.9.
Fixes: c8df400984 ("x86/fpu, x86/mm/pkeys: Add PKRU xsave fields and data structures")
Signed-off-by: Dave Hansen <dave.hansen@intel.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20161007162342.28A49813@viggo.jf.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Markus reported that he sees new warnings:
APIC: NR_CPUS/possible_cpus limit of 4 reached. Processor 4/0x84 ignored.
APIC: NR_CPUS/possible_cpus limit of 4 reached. Processor 5/0x85 ignored.
This comes from the recent persistant cpuid - nodeid changes. The code
which emits the warning has been called prior to these changes only for
enabled processors. Now it's called for disabled processors as well to get
the possible cpu accounting correct. So if the kernel is compiled for the
number of actual available/enabled CPUs and the BIOS reports disabled CPUs
as well then the above warnings are printed.
That's a pointless exercise as it only makes sense if there are more CPUs
enabled than the kernel supports.
Nake the warning conditional on enabled processors so we are back to the
state before these changes.
Fixes: 8f54969dc8 ("x86/acpi: Introduce persistent storage for cpuid <-> apicid mapping")
Reported-and-tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: linux-acpi@vger.kernel.org
Cc: Gu Zheng <guz.fnst@cn.fujitsu.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1610071549330.19804@nanos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Yinghai reported that the recent changes to make the cpuid - nodeid
relationship permanent causes a cpuid ordering regression on a system which
has 2apic enabled..
The reason is that the ACPI local APIC parser has no sanity check for
apicid 0xff, which is an invalid id. So a CPU id for this invalid local
APIC id is allocated and therefor breaks the cpuid ordering.
Add a sanity check to acpi_parse_lapic() which ignores the invalid id.
Fixes: 8f54969dc8 ("x86/acpi: Introduce persistent storage for cpuid <-> apicid mapping")
Reported-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Gu Zheng <guz.fnst@cn.fujitsu.com>,
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: douly.fnst@cn.fujitsu.com,
Cc: zhugh.fnst@cn.fujitsu.com
Cc: Tony Luck <tony.luck@intel.com>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Len Brown <lenb@kernel.org>
Cc: Lv Zheng <lv.zheng@intel.com>,
Cc: robert.moore@intel.com
Cc: linux-acpi@vger.kernel.org
Link: https://lkml.kernel.org/r/CAE9FiQVQx6FRXT-RdR7Crz4dg5LeUWHcUSy1KacjR+JgU_vGJg@mail.gmail.com
Merge updates from Andrew Morton:
- fsnotify updates
- ocfs2 updates
- all of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (127 commits)
console: don't prefer first registered if DT specifies stdout-path
cred: simpler, 1D supplementary groups
CREDITS: update Pavel's information, add GPG key, remove snail mail address
mailmap: add Johan Hovold
.gitattributes: set git diff driver for C source code files
uprobes: remove function declarations from arch/{mips,s390}
spelling.txt: "modeled" is spelt correctly
nmi_backtrace: generate one-line reports for idle cpus
arch/tile: adopt the new nmi_backtrace framework
nmi_backtrace: do a local dump_stack() instead of a self-NMI
nmi_backtrace: add more trigger_*_cpu_backtrace() methods
min/max: remove sparse warnings when they're nested
Documentation/filesystems/proc.txt: add more description for maps/smaps
mm, proc: fix region lost in /proc/self/smaps
proc: fix timerslack_ns CAP_SYS_NICE check when adjusting self
proc: add LSM hook checks to /proc/<tid>/timerslack_ns
proc: relax /proc/<tid>/timerslack_ns capability requirements
meminfo: break apart a very long seq_printf with #ifdefs
seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char
proc: faster /proc/*/status
...
These updates have been kept in a separate branch mostly because
they rely on updates to the respective clk drivers to keep the
shared header files in sync.
- The Renesas r8a7796 (R-Car M3-W) platform gets added, this is an
automotive SoC similar to the ⅹ8a7795 chip we already support, but
the dts changes rely on a clock driver change that has been
merged for v4.9 through the clk tree.
- The Amlogic meson-gxbb (S905) platform gains support for a few
drivers merged through our tree, in particular the network and
usb driver changes are required and included here, and also
the clk tree changes.
- The Allwinner platforms have seen a large-scale change to their
clk drivers and the dts file updates must come after that.
This includes the newly added Nextthing GR8 platform, which is
derived from sun5i/A13.
- Some integrator (arm32) changes rely on clk driver changes.
- A single patch for lpc32xx has no such dependency but wasn't
added until just before the merge window
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Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC late DT updates from Arnd Bergmann:
"These updates have been kept in a separate branch mostly because they
rely on updates to the respective clk drivers to keep the shared
header files in sync.
- The Renesas r8a7796 (R-Car M3-W) platform gets added, this is an
automotive SoC similar to the ⅹ8a7795 chip we already support, but
the dts changes rely on a clock driver change that has been merged
for v4.9 through the clk tree.
- The Amlogic meson-gxbb (S905) platform gains support for a few
drivers merged through our tree, in particular the network and usb
driver changes are required and included here, and also the clk
tree changes.
- The Allwinner platforms have seen a large-scale change to their clk
drivers and the dts file updates must come after that. This
includes the newly added Nextthing GR8 platform, which is derived
from sun5i/A13.
- Some integrator (arm32) changes rely on clk driver changes.
- A single patch for lpc32xx has no such dependency but wasn't added
until just before the merge window"
* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (99 commits)
ARM: dts: lpc32xx: add device node for IRAM on-chip memory
ARM: dts: sun8i: Add accelerometer to polaroid-mid2407pxe03
ARM: dts: sun8i: enable UART1 for iNet D978 Rev2 board
ARM: dts: sun8i: add pinmux for UART1 at PG
dts: sun8i-h3: add I2C0-2 peripherals to H3 SOC
dts: sun8i-h3: add pinmux definitions for I2C0-2
dts: sun8i-h3: associate exposed UARTs on Orange Pi Boards
dts: sun8i-h3: split off RTS/CTS for UART1 in seperate pinmux
dts: sun8i-h3: add pinmux definitions for UART2-3
ARM: dts: sun9i: a80-optimus: Disable EHCI1
ARM: dts: sun9i: cubieboard4: Add AXP806 PMIC device node and regulators
ARM: dts: sun9i: a80-optimus: Add AXP806 PMIC device node and regulators
ARM: dts: sun9i: cubieboard4: Declare AXP809 SW regulator as unused
ARM: dts: sun9i: a80-optimus: Declare AXP809 SW regulator as unused
ARM: dts: sun8i: Add touchscreen node for sun8i-a33-ga10h
ARM: dts: sun8i: Add touchscreen node for sun8i-a23-polaroid-mid2809pxe04
ARM: dts: sun8i: Add touchscreen node for sun8i-a23-polaroid-mid2407pxe03
ARM: dts: sun8i: Add touchscreen node for sun8i-a23-inet86dz
ARM: dts: sun8i: Add touchscreen node for sun8i-a23-gt90h
ARM64: dts: meson-gxbb-vega-s95: Enable USB Nodes
...
The 64-bit DT changes are surprisingly small this time, we only add two
SoC platforms: the ZTE ZX296718 Set-top-box SoC and the SocioNext
UniPhier LD11 TV SoC, each with their reference boards.
There are three new machines added for existing SoC platforms:
- The Marvell Armada 8040 development board is an impressive quad-core
Cortex-A72 machine with three 10gbit ethernet interfaces
- Qualcomms DragonBoard 820c single-board computer is their current
high-end phone platform in the 96boards form factor
- Rockchip: Tronsmart Orion r86 set-top-box is a popular mid-range
Android box based on the 8-core rk3368 SoC.
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Merge tag 'armsoc-dt64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM 64-bit DT updates from Arnd Bergmann:
"The 64-bit DT changes are surprisingly small this time, we only add
two SoC platforms: the ZTE ZX296718 Set-top-box SoC and the SocioNext
UniPhier LD11 TV SoC, each with their reference boards.
There are three new machines added for existing SoC platforms:
- The Marvell Armada 8040 development board is an impressive
quad-core Cortex-A72 machine with three 10gbit ethernet interfaces
- Qualcomms DragonBoard 820c single-board computer is their current
high-end phone platform in the 96boards form factor
- Rockchip: Tronsmart Orion r86 set-top-box is a popular mid-range
Android box based on the 8-core rk3368 SoC"
* tag 'armsoc-dt64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (91 commits)
arm64: dts: berlin4ct: Add L2 cache topology
arm64: dts: berlin4ct: enable all wdt nodes unconditionally
arm64: dts: berlin4ct: switch to Cortex-A53 specific pmu nodes
arm64: dts: Add ZTE ZX296718 SoC dts and Makefile
arm64: dts: apm: Add DT node for APM X-Gene 2 CPU clocks
arm64: dts: apm: Add X-Gene SoC hwmon to device tree
arm64: dts: apm: Fix interrupt polarity for X-Gene PCIe legacy interrupts
arm64: dts: apm: Add APM X-Gene v2 SoC PMU DTS entries
arm64: dts: apm: Add APM X-Gene SoC PMU DTS entries
arm64: dts: marvell: enable MSI for PCIe on Armada 7K/8K
arm64: dts: ls2080a: Add 'dma-coherent' for ls2080a PCI nodes
arm64: dts: rockchip: add Type-C phy for RK3399
arm64: dts: rockchip: enable the gmac for rk3399 evb board
arm64: dts: rockchip: add the gmac needed node for rk3399
arm64: dts: rockchip: support the pmu node for rk3399
arm64: dts: rockchip: change all interrupts cells to 4 on rk3399 SoCs
arm64: dts: rockchip: add the tcpc for rk3399 power domain
arm64: dts: rockchip: add efuse0 device node for rk3399
arm64: dts: rockchip: configure PCIe support for rk3399-evb
arm64: dts: rockchip: add the PCIe controller support for RK3399
...
These are as usual a very large number of mostly boring updates to
enable devices in existing machines, or to fix minor bugs. Notably,
an ongoing treewide effort to fix warnings caused by an update to the
device tree compiler. These are enabled with "make W=1" at the moment
but can hopefully become the default once all issues have been addressed.
No new SoC platform is added this time around (Armada 395 and Orion
mv88f5181 are slight variations of existing ones), but a significant
number of new dts files are added, which I list by platform:
- Allwinner: Empire Electronix M712 and iNet d978 Rev2 tablets;
Orange Pi PC Plus, Orange Pi 2, Orange Pi Plus 2E,
Orange Pi Lite, Olimex A33-Olinuxino, and Nano Pi Neo
single-board computers
- ARM Realview: all supported machines (ported from board files)
- Broadcom: BCM958525er, BCM958522er, BCM988312hr, BCM958623hr and
BCM958622hr reference boards for Northstar platform;
Raspberry Pi Zero single-board computer
- Marvell EBU: Netgear WNR854T router (ported from board file);
Armada 395 SoC platform and GP board
Armada 390 DB development board
- NXP i.MX: imx7s Warp7 reference board;
Gateworks Ventana GW553x single-board computer,
Technologic Systems TS-4900 and
Engicam IMX6UL GEA M6UL computer-on-module,
Inverse Path USB armory board
- Qualcomm: LG Nexus 5 Phone
- Renesas: r8a7792/wheat and r7s72100/rskrza1 development boards
- Rockchip: Rockchip RK3288 Fennec reference board;
Firefly RK3288 Reload platform
- ST Microelectronics STi: B2260 (96boards) single-board computer
- TI Davinci: OMAP-L138 LCDK Development kit
- TI OMAP: beagleboard-x15 rev B1 single-board computer
Conflicts: vendor-prefixes.txt has conflicting additions, keep all of
them in alphabetical order.
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Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM DT updates from Arnd Bergmann:
"These are as usual a very large number of mostly boring updates to
enable devices in existing machines, or to fix minor bugs. Notably, an
ongoing treewide effort to fix warnings caused by an update to the
device tree compiler. These are enabled with "make W=1" at the moment
but can hopefully become the default once all issues have been
addressed.
No new SoC platform is added this time around (Armada 395 and Orion
mv88f5181 are slight variations of existing ones), but a significant
number of new dts files are added, which I list by platform:
- Allwinner: Empire Electronix M712 and iNet d978 Rev2 tablets,
Orange Pi PC Plus, Orange Pi 2, Orange Pi Plus 2E, Orange Pi Lite,
Olimex A33-Olinuxino, and Nano Pi Neo single-board computers
- ARM Realview: all supported machines (ported from board files)
- Broadcom: BCM958525er, BCM958522er, BCM988312hr, BCM958623hr and
BCM958622hr reference boards for Northstar platform, Raspberry Pi
Zero single-board computer
- Marvell EBU: Netgear WNR854T router (ported from board file),
Armada 395 SoC platform and GP board Armada 390 DB development
board
- NXP i.MX: imx7s Warp7 reference board, Gateworks Ventana GW553x
single-board computer, Technologic Systems TS-4900 and Engicam
IMX6UL GEA M6UL computer-on-module, Inverse Path USB armory board
- Qualcomm: LG Nexus 5 Phone
- Renesas: r8a7792/wheat and r7s72100/rskrza1 development boards
- Rockchip: Rockchip RK3288 Fennec reference board, Firefly RK3288
Reload platform
- ST Microelectronics STi: B2260 (96boards) single-board computer
- TI Davinci: OMAP-L138 LCDK Development kit
- TI OMAP: beagleboard-x15 rev B1 single-board computer"
* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (390 commits)
ARM: dts: sony-nsz-gs7: add missing unit name to /memory node
ARM: dts: chromecast: add missing unit name to /memory node
ARM: dts: berlin2q-marvell-dmp: add missing unit name to /memory node
ARM: dts: berlin2: Add missing unit name to /soc node
ARM: dts: berlin2cd: Add missing unit name to /soc node
ARM: dts: berlin2q: Add missing unit name to /soc node
ARM: dts: berlin2: Remove skeleton.dtsi inclusion
ARM: dts: berlin2cd: Remove skeleton.dtsi inclusion
ARM: dts: berlin2q: Remove skeleton.dtsi inclusion
arm: dts: berlin2q: enable all wdt nodes unconditionally
arm: dts: berlin2: enable all wdt nodes unconditionally
ARM: dts: omap5-igep0050.dts: Use tabs for indentation
ARM: dts: Fix igepv5 power button GPIO direction
ARM: dts: am335x-evmsk: Add blue-and-red-wiring -property to lcdc node
ARM: dts: am335x-evmsk: Whitespace cleanup of lcdc related nodes
ARM: dts: am335x-evm: Add blue-and-red-wiring -property to lcdc node
ARM: dts: s3c64xx: Use macros for pinctrl configuration
ARM: dts: s3c2416: Use macros for pinctrl configuration
ARM: dts: s5pv210: Use macros for pinctrl configuration
ARM: dts: s3c64xx: Use common macros for pinctrl configuration
...
Driver updates for ARM SoCs, including a couple of newly added drivers:
- The Qualcomm external bus interface 2 (EBI2), used in some of their
mobile phone chips for connecting flash memory, LCD displays or
other peripherals
- Secure monitor firmware for Amlogic SoCs, and an NVMEM driver for the
EFUSE based on that firmware interface.
- Perf support for the AppliedMicro X-Gene performance monitor unit
- Reset driver for STMicroelectronics STM32
- Reset driver for SocioNext UniPhier SoCs
Aside from these, there are minor updates to SoC-specific bus,
clocksource, firmware, pinctrl, reset, rtc and pmic drivers.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Arnd Bergmann:
"Driver updates for ARM SoCs, including a couple of newly added
drivers:
- The Qualcomm external bus interface 2 (EBI2), used in some of their
mobile phone chips for connecting flash memory, LCD displays or
other peripherals
- Secure monitor firmware for Amlogic SoCs, and an NVMEM driver for
the EFUSE based on that firmware interface.
- Perf support for the AppliedMicro X-Gene performance monitor unit
- Reset driver for STMicroelectronics STM32
- Reset driver for SocioNext UniPhier SoCs
Aside from these, there are minor updates to SoC-specific bus,
clocksource, firmware, pinctrl, reset, rtc and pmic drivers"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (50 commits)
bus: qcom-ebi2: depend on HAS_IOMEM
pinctrl: mvebu: orion5x: Generalise mv88f5181l support for 88f5181
clk: mvebu: Add clk support for the orion5x SoC mv88f5181
dt-bindings: EXYNOS: Add Exynos5433 PMU compatible
clocksource: exynos_mct: Add the support for ARM64
perf: xgene: Add APM X-Gene SoC Performance Monitoring Unit driver
Documentation: Add documentation for APM X-Gene SoC PMU DTS binding
MAINTAINERS: Add entry for APM X-Gene SoC PMU driver
bus: qcom: add EBI2 driver
bus: qcom: add EBI2 device tree bindings
rtc: rtc-pm8xxx: Add support for pm8018 rtc
nvmem: amlogic: Add Amlogic Meson EFUSE driver
firmware: Amlogic: Add secure monitor driver
soc: qcom: smd: Reset rx tail rather than tx
memory: atmel-sdramc: fix a possible NULL dereference
reset: hi6220: allow to compile test driver on other architectures
reset: zynq: add driver Kconfig option
reset: sunxi: add driver Kconfig option
reset: stm32: add driver Kconfig option
reset: socfpga: add driver Kconfig option
...
Changes to platform code for 64-bit ARM platforms.
Nearly all of these are defconfig updates to enable new drivers or old
drivers still used on these 64-bit platforms.
Aside from that, we gain initial support for two set-top-box platforms,
both of which already have 32-bit support in arch/arm:
- Broadcom adds abstract support for the bcm7xxx/brcmstb platform,
presumably the respective dts files and more information will
follow at a later point.
- The ZTE ZX296718 SoC for set-top-boxes, a relative of the 32-bit
ZX296702 SoC that we already support.
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Merge tag 'armsoc-arm64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC 64-bit updates from Arnd Bergmann:
"Changes to platform code for 64-bit ARM platforms.
Nearly all of these are defconfig updates to enable new drivers or old
drivers still used on these 64-bit platforms.
Aside from that, we gain initial support for two set-top-box
platforms, both of which already have 32-bit support in arch/arm:
- Broadcom adds abstract support for the bcm7xxx/brcmstb platform,
presumably the respective dts files and more information will
follow at a later point.
- The ZTE ZX296718 SoC for set-top-boxes, a relative of the 32-bit
ZX296702 SoC that we already support"
* tag 'armsoc-arm64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
arm64: add ZTE ZX SoC family
arm64: defconfig: enable ZTE ZX related config
arm64: defconfig: enable common modules for power management
arm64: defconfig: enable meson I2C
arm64: defconfig: enable meson SPI as module
arm64: defconfig: enable meson WDT as modules
arm64: defconfig: enable HW random as module
arm64: defconfig: Enable SDHI and GPIO_REGULATOR
arm64: configs: enable PCIe driver for Aardvark
Kconfig: ARCH_HISI: Add PINCTRL to HISI platform
arm64: defconfig: enable bluetooth supports as modules
arm64: defconfig: enable CONFIG_INPUT_HISI_POWERKEY for HiKey
arm64: defconfig: Enable HiSilicon kirin drm, adv7533 for HiKey
arm64: defconfig: Enable Hisi SAS and HNS
arm64: defconfig: Enable QDF2432 config options
arm64: sunxi: Kconfig: add essential pinctrl driver
arm64: defconfig: Add Renesas R-Car HSUSB driver support as module
arm64: Add Broadcom Set Top Box Kconfig entry point
arm64: defconfig: enable xhci-platform
Defconfig additions, removals, etc. Most of these are small changes adding
the options for newly upstreamed drivers, or drivers needed for new board
support. Nothing specifically sticks out this time.
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Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC defconfig updates from Arnd Bergmann:
"Defconfig additions, removals, etc. Most of these are small changes
adding the options for newly upstreamed drivers, or drivers needed for
new board support. Nothing specifically sticks out this time"
* tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (25 commits)
ARM: multi_v7_defconfig: enable CONFIG_EFI
ARM: multi_v7_defconfig: Build Atmel maXTouch driver as a module
ARM: defconfig: update the Integrator defconfig
ARM: keystone: defconfig: Fix USB configuration
ARM: imx_v6_v7_defconfig: Select the wm8960 codec driver
ARM: omap2plus_defconfig: switch to the IIO BMP085 driver
ARM: mvebu_v5_defconfig: use MV88E6XXX
ARM: davinci_all_defconfig: Enable some UBI modules
ARM: davinci_all_defconfig: Enable AEMIF as a module
ARM: multi_v7_defconfig: Enable SECCOMP
ARM: exynos_defconfig: Enable SECCOMP
ARM: imx_v6_v7_defconfig: Add CONFIG_MPL3115
ARM: imx_v6_v7_defconfig: Enable GPU support
ARM: s3c2410_defconfig: Remove CONFIG_IPV6_PRIVACY
ARM: exynos_defconfig: Enable PM_DEBUG
ARM: exynos_defconfig: Enable bus frequency scaling with devfreq
ARM: imx_v6_v7_defconfig: enable more USB configurations
ARM: davinci_all_defconfig: enable SMSC ethernet PHY
ARM: davinci_all_defconfig: enable RTC driver as module
ARM: multi_v7_defconfig: Enable ARM_IMX6Q_CPUFREQ
...
These are updates for platform specific code on 32-bit ARM machines,
essentially anything that can not (yet) be expressed using DT files.
Noteworthy changes include:
- We get support for running in big-endian mode on two platforms:
sunxi (Allwinner) and s3c24xx (old Samsung).
- The recently added Uniphier platform now uses standard PSCI
methods for SMP booting and we remove support for old bootloader
versions that did not support it yet.
- In sunxi, we gain support for the "Nextthing GR8" SoC, which
is a close relative of the Allwinner A13 and R8 chips.
- PXA completes its move over to the generic dmaengine framework
and removes its old private API
- mach-bcm gains support for BCM47189/BCM53573, their first ARM
SoC with integrated 802.11ac wireless networking.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform updates from Arnd Bergmann:
"These are updates for platform specific code on 32-bit ARM machines,
essentially anything that can not (yet) be expressed using DT files.
Noteworthy changes include:
- We get support for running in big-endian mode on two platforms:
sunxi (Allwinner) and s3c24xx (old Samsung).
- The recently added Uniphier platform now uses standard PSCI methods
for SMP booting and we remove support for old bootloader versions
that did not support it yet.
- In sunxi, we gain support for the "Nextthing GR8" SoC, which is a
close relative of the Allwinner A13 and R8 chips.
- PXA completes its move over to the generic dmaengine framework and
removes its old private API
- mach-bcm gains support for BCM47189/BCM53573, their first ARM SoC
with integrated 802.11ac wireless networking"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits)
ARM: imx legacy: pca100: move peripheral initialization to .init_late
ARM: imx legacy: mx27ads: move peripheral initialization to .init_late
ARM: imx legacy: mx21ads: move peripheral initialization to .init_late
ARM: imx legacy: pcm043: move peripheral initialization to .init_late
ARM: imx legacy: mx35-3ds: move peripheral initialization to .init_late
ARM: imx legacy: mx27-3ds: move peripheral initialization to .init_late
ARM: imx legacy: imx27-visstrim-m10: move peripheral initialization to .init_late
ARM: imx legacy: vpr200: move peripheral initialization to .init_late
ARM: imx legacy: mx31moboard: move peripheral initialization to .init_late
ARM: imx legacy: armadillo5x0: move peripheral initialization to .init_late
ARM: imx legacy: qong: move peripheral initialization to .init_late
ARM: imx legacy: mx31-3ds: move peripheral initialization to .init_late
ARM: imx legacy: pcm037: move peripheral initialization to .init_late
ARM: imx legacy: mx31lilly: move peripheral initialization to .init_late
ARM: imx legacy: mx31ads: move peripheral initialization to .init_late
ARM: imx legacy: mx31lite: move peripheral initialization to .init_late
ARM: imx legacy: kzm: move peripheral initialization to .init_late
MAINTAINERS: update list of Oxnas maintainers
ARM: orion5x: remove extraneous NO_IRQ
ARM: orion: simplify orion_ge00_switch_init
...
The cleanups for v4.9 are a little larger that usual, but thankfully
that is almost exclusively due to removing a significant number of
files that have become obsolete after the still ongoing conversion
of old board files to devicetree.
- for mach-omap2, which is still the largest platform in arch/arm/,
the conversion to DT is finally complete after the Nokia N900 is
now fully supported there, along with the omap3 LDP, and we can
remove those two board files.
If no regressions are found, another large cleanup for the platform
will happen as a follow-up, removing dead code and restructuring
the platform based on being DT-only.
- In mach-imx, similar work is ongoing, but has not come that far.
This time, we remove the obsolete board file for the i.MX1
generation, which like i.MX25, i.MX5, i.MX6, and i.MX7 is now DT-only.
The remaining board files are for i.MX2 and i.MX3 machines
based on old ARM926 or ARM1136 cores that should work with DT
in principle.
- realview has just been converted from board files to DT, and a lot
of code gets removed in the process. This is the last
ARM/Keil/Versatile derived platform that was still using board
files, the other ones being integrator, versatile and vexpress.
We can probably merge the remaining code into a single directory
in the near future.
- clps711x had completed the conversion in v4.8, but we accidentally
left the files in place that should have been deleted then.
Conflicts: two files deleted here have been modified upstream,
the changes can be discarded.
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Merge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups from Arnd Bergmann:
"The cleanups for v4.9 are a little larger that usual, but thankfully
that is almost exclusively due to removing a significant number of
files that have become obsolete after the still ongoing conversion of
old board files to devicetree.
- for mach-omap2, which is still the largest platform in arch/arm/,
the conversion to DT is finally complete after the Nokia N900 is
now fully supported there, along with the omap3 LDP, and we can
remove those two board files. If no regressions are found, another
large cleanup for the platform will happen as a follow-up, removing
dead code and restructuring the platform based on being DT-only.
- In mach-imx, similar work is ongoing, but has not come that far.
This time, we remove the obsolete board file for the i.MX1
generation, which like i.MX25, i.MX5, i.MX6, and i.MX7 is now
DT-only. The remaining board files are for i.MX2 and i.MX3 machines
based on old ARM926 or ARM1136 cores that should work with DT in
principle.
- realview has just been converted from board files to DT, and a lot
of code gets removed in the process. This is the last
ARM/Keil/Versatile derived platform that was still using board
files, the other ones being integrator, versatile and vexpress. We
can probably merge the remaining code into a single directory in
the near future.
- clps711x had completed the conversion in v4.8, but we accidentally
left the files in place that should have been deleted then"
* tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (21 commits)
ARM: select PCI_DOMAINS config from ARCH_MULTIPLATFORM
ARM: stop *MIGHT_HAVE_PCI* config from being selected redundantly
ARM: imx: (trivial) fix typo and grammar
ARM: clps711x: remove extraneous files
ARM: imx: use IS_ENABLED() instead of checking for built-in or module
ARM: OMAP2+: use IS_ENABLED() instead of checking for built-in or module
ARM: OMAP1: use IS_ENABLED() instead of checking for built-in or module
ARM: imx: remove platform-mxc_rnga
ARM: realview: imply device tree boot
ARM: realview: no need to select SMP_ON_UP explicitly
ARM: realview: delete the RealView board files
ARM: imx: no need to select SMP_ON_UP explicitly
ARM: i.MX: Move SOC_IMX1 into 'Device tree only'
ARM: i.MX: Remove i.MX1 non-DT support
ARM: i.MX: Remove i.MX1 Synertronixx SCB9328 board support
ARM: i.MX: Remove i.MX1 Armadeus APF9328 board support
ARM: mxs: remove obsolete startup code for TX28
ARM: i.MX31 iomux: remove duplicates with alternate name
ARM: i.MX31 iomux: remove plain duplicates
ARM: OMAP2+: Drop legacy board file for LDP
...
Pull parisc updates from Helge Deller:
"Changes include:
- Fix boot of 32bit SMP kernel (initial kernel mapping was too small)
- Added hardened usercopy checks
- Drop bootmem and switch to memblock and NO_BOOTMEM implementation
- Drop the BROKEN_RODATA config option (and thus remove the relevant
code from the generic headers and files because parisc was the last
architecture which used this config option)
- Improve segfault reporting by printing human readable error strings
- Various smaller changes, e.g. dwarf debug support for assembly
code, update comments regarding copy_user_page_asm, switch to
kmalloc_array()"
* 'parisc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Increase KERNEL_INITIAL_SIZE for 32-bit SMP kernels
parisc: Drop bootmem and switch to memblock
parisc: Add hardened usercopy feature
parisc: Add cfi_startproc and cfi_endproc to assembly code
parisc: Move hpmc stack into page aligned bss section
parisc: Fix self-detected CPU stall warnings on Mako machines
parisc: Report trap type as human readable string
parisc: Update comment regarding implementation of copy_user_page_asm
parisc: Use kmalloc_array() in add_system_map_addresses()
parisc: Check return value of smp_boot_one_cpu()
parisc: Drop BROKEN_RODATA config option
Highlights:
- Major rework of Book3S 64-bit exception vectors (Nicholas Piggin)
- Use gas sections for arranging exception vectors et. al.
- Large set of TM cleanups and selftests (Cyril Bur)
- Enable transactional memory (TM) lazily for userspace (Cyril Bur)
- Support for XZ compression in the zImage wrapper (Oliver O'Halloran)
- Add support for bpf constant blinding (Naveen N. Rao)
- Beginnings of upstream support for PA Semi Nemo motherboards (Darren Stevens)
Fixes:
- Ensure .mem(init|exit).text are within _stext/_etext (Michael Ellerman)
- xmon: Don't use ld on 32-bit (Michael Ellerman)
- vdso64: Use double word compare on pointers (Anton Blanchard)
- powerpc/nvram: Fix an incorrect partition merge (Pan Xinhui)
- powerpc: Fix usage of _PAGE_RO in hugepage (Christophe Leroy)
- powerpc/mm: Update FORCE_MAX_ZONEORDER range to allow hugetlb w/4K (Aneesh Kumar K.V)
- Fix memory leak in queue_hotplug_event() error path (Andrew Donnellan)
- Replay hypervisor maintenance interrupt first (Nicholas Piggin)
Cleanups & features:
- Sparse fixes/cleanups (Daniel Axtens)
- Preserve CFAR value on SLB miss caused by access to bogus address (Paul Mackerras)
- Radix MMU fixups for POWER9 (Aneesh Kumar K.V)
- Support for setting used_(vsr|vr|spe) in sigreturn path (for CRIU) (Simon Guo)
- Optimise syscall entry for virtual, relocatable case (Nicholas Piggin)
- Optimise MSR handling in exception handling (Nicholas Piggin)
- Support for kexec with Radix MMU (Benjamin Herrenschmidt)
- powernv EEH fixes (Russell Currey)
- Suprise PCI hotplug support for powernv (Gavin Shan)
- Endian/sparse fixes for powernv PCI (Gavin Shan)
- Defconfig updates (Anton Blanchard)
- Various performance optimisations (Anton Blanchard)
- Align hot loops of memset() and backwards_memcpy()
- During context switch, check before setting mm_cpumask
- Remove static branch prediction in atomic{, 64}_add_unless
- Only disable HAVE_EFFICIENT_UNALIGNED_ACCESS on POWER7 little endian
- Set default CPU type to POWER8 for little endian builds
- KVM: PPC: Book3S HV: Migrate pinned pages out of CMA (Balbir Singh)
- cxl: Flush PSL cache before resetting the adapter (Frederic Barrat)
- cxl: replace loop with for_each_child_of_node(), remove unneeded of_node_put() (Andrew Donnellan)
- Fix HV facility unavailable to use correct handler (Nicholas Piggin)
- Remove unnecessary syscall trampoline (Nicholas Piggin)
- fadump: Fix build break when CONFIG_PROC_VMCORE=n (Michael Ellerman)
- Quieten EEH message when no adapters are found (Anton Blanchard)
- powernv: Add PHB register dump debugfs handle (Russell Currey)
- Use kprobe blacklist for exception handlers & asm functions (Nicholas Piggin)
- Document the syscall ABI (Nicholas Piggin)
- MAINTAINERS: Update cxl maintainers (Michael Neuling)
- powerpc: Remove all usages of NO_IRQ (Michael Ellerman)
Minor cleanups:
- Andrew Donnellan, Christophe Leroy, Colin Ian King, Cyril Bur, Frederic Barrat,
Pan Xinhui, PrasannaKumar Muralidharan, Rui Teng, Simon Guo.
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Merge tag 'powerpc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Highlights:
- Major rework of Book3S 64-bit exception vectors (Nicholas Piggin)
- Use gas sections for arranging exception vectors et. al.
- Large set of TM cleanups and selftests (Cyril Bur)
- Enable transactional memory (TM) lazily for userspace (Cyril Bur)
- Support for XZ compression in the zImage wrapper (Oliver
O'Halloran)
- Add support for bpf constant blinding (Naveen N. Rao)
- Beginnings of upstream support for PA Semi Nemo motherboards
(Darren Stevens)
Fixes:
- Ensure .mem(init|exit).text are within _stext/_etext (Michael
Ellerman)
- xmon: Don't use ld on 32-bit (Michael Ellerman)
- vdso64: Use double word compare on pointers (Anton Blanchard)
- powerpc/nvram: Fix an incorrect partition merge (Pan Xinhui)
- powerpc: Fix usage of _PAGE_RO in hugepage (Christophe Leroy)
- powerpc/mm: Update FORCE_MAX_ZONEORDER range to allow hugetlb w/4K
(Aneesh Kumar K.V)
- Fix memory leak in queue_hotplug_event() error path (Andrew
Donnellan)
- Replay hypervisor maintenance interrupt first (Nicholas Piggin)
Various performance optimisations (Anton Blanchard):
- Align hot loops of memset() and backwards_memcpy()
- During context switch, check before setting mm_cpumask
- Remove static branch prediction in atomic{, 64}_add_unless
- Only disable HAVE_EFFICIENT_UNALIGNED_ACCESS on POWER7 little
endian
- Set default CPU type to POWER8 for little endian builds
Cleanups & features:
- Sparse fixes/cleanups (Daniel Axtens)
- Preserve CFAR value on SLB miss caused by access to bogus address
(Paul Mackerras)
- Radix MMU fixups for POWER9 (Aneesh Kumar K.V)
- Support for setting used_(vsr|vr|spe) in sigreturn path (for CRIU)
(Simon Guo)
- Optimise syscall entry for virtual, relocatable case (Nicholas
Piggin)
- Optimise MSR handling in exception handling (Nicholas Piggin)
- Support for kexec with Radix MMU (Benjamin Herrenschmidt)
- powernv EEH fixes (Russell Currey)
- Suprise PCI hotplug support for powernv (Gavin Shan)
- Endian/sparse fixes for powernv PCI (Gavin Shan)
- Defconfig updates (Anton Blanchard)
- KVM: PPC: Book3S HV: Migrate pinned pages out of CMA (Balbir Singh)
- cxl: Flush PSL cache before resetting the adapter (Frederic Barrat)
- cxl: replace loop with for_each_child_of_node(), remove unneeded
of_node_put() (Andrew Donnellan)
- Fix HV facility unavailable to use correct handler (Nicholas
Piggin)
- Remove unnecessary syscall trampoline (Nicholas Piggin)
- fadump: Fix build break when CONFIG_PROC_VMCORE=n (Michael
Ellerman)
- Quieten EEH message when no adapters are found (Anton Blanchard)
- powernv: Add PHB register dump debugfs handle (Russell Currey)
- Use kprobe blacklist for exception handlers & asm functions
(Nicholas Piggin)
- Document the syscall ABI (Nicholas Piggin)
- MAINTAINERS: Update cxl maintainers (Michael Neuling)
- powerpc: Remove all usages of NO_IRQ (Michael Ellerman)
Minor cleanups:
- Andrew Donnellan, Christophe Leroy, Colin Ian King, Cyril Bur,
Frederic Barrat, Pan Xinhui, PrasannaKumar Muralidharan, Rui Teng,
Simon Guo"
* tag 'powerpc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (156 commits)
powerpc/bpf: Add support for bpf constant blinding
powerpc/bpf: Implement support for tail calls
powerpc/bpf: Introduce accessors for using the tmp local stack space
powerpc/fadump: Fix build break when CONFIG_PROC_VMCORE=n
powerpc: tm: Enable transactional memory (TM) lazily for userspace
powerpc/tm: Add TM Unavailable Exception
powerpc: Remove do_load_up_transact_{fpu,altivec}
powerpc: tm: Rename transct_(*) to ck(\1)_state
powerpc: tm: Always use fp_state and vr_state to store live registers
selftests/powerpc: Add checks for transactional VSXs in signal contexts
selftests/powerpc: Add checks for transactional VMXs in signal contexts
selftests/powerpc: Add checks for transactional FPUs in signal contexts
selftests/powerpc: Add checks for transactional GPRs in signal contexts
selftests/powerpc: Check that signals always get delivered
selftests/powerpc: Add TM tcheck helpers in C
selftests/powerpc: Allow tests to extend their kill timeout
selftests/powerpc: Introduce GPR asm helper header file
selftests/powerpc: Move VMX stack frame macros to header file
selftests/powerpc: Rework FPU stack placement macros and move to header file
selftests/powerpc: Check for VSX preservation across userspace preemption
...
Current supplementary groups code can massively overallocate memory and
is implemented in a way so that access to individual gid is done via 2D
array.
If number of gids is <= 32, memory allocation is more or less tolerable
(140/148 bytes). But if it is not, code allocates full page (!)
regardless and, what's even more fun, doesn't reuse small 32-entry
array.
2D array means dependent shifts, loads and LEAs without possibility to
optimize them (gid is never known at compile time).
All of the above is unnecessary. Switch to the usual
trailing-zero-len-array scheme. Memory is allocated with
kmalloc/vmalloc() and only as much as needed. Accesses become simpler
(LEA 8(gi,idx,4) or even without displacement).
Maximum number of gids is 65536 which translates to 256KB+8 bytes. I
think kernel can handle such allocation.
On my usual desktop system with whole 9 (nine) aux groups, struct
group_info shrinks from 148 bytes to 44 bytes, yay!
Nice side effects:
- "gi->gid[i]" is shorter than "GROUP_AT(gi, i)", less typing,
- fix little mess in net/ipv4/ping.c
should have been using GROUP_AT macro but this point becomes moot,
- aux group allocation is persistent and should be accounted as such.
Link: http://lkml.kernel.org/r/20160817201927.GA2096@p183.telecom.by
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Vasily Kulikov <segoon@openwall.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The declarations of arch-specific functions have been moved to a common
header in commit 3820b4d278 ('uprobes: Move function declarations out
of arch'), but MIPS and S390 has added them to their own trees later.
Remove the unnecessary duplicates.
Link: http://lkml.kernel.org/r/1472804384-17830-1-git-send-email-marcin.nowakowski@imgtec.com
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When doing an nmi backtrace of many cores, most of which are idle, the
output is a little overwhelming and very uninformative. Suppress
messages for cpus that are idling when they are interrupted and just
emit one line, "NMI backtrace for N skipped: idling at pc 0xNNN".
We do this by grouping all the cpuidle code together into a new
.cpuidle.text section, and then checking the address of the interrupted
PC to see if it lies within that section.
This commit suitably tags x86 and tile idle routines, and only adds in
the minimal framework for other architectures.
Link: http://lkml.kernel.org/r/1472487169-14923-5-git-send-email-cmetcalf@mellanox.com
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm]
Tested-by: Petr Mladek <pmladek@suse.com>
Cc: Aaron Tomlin <atomlin@redhat.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Previously tile was rolling its own method of capturing backtrace data
in the NMI handlers, but it was relying on running printk() from the NMI
handler, which is not always safe. So adopt the nmi_backtrace model
(with the new cpumask extension) instead.
So we can call the nmi_backtrace code directly from the nmi handler,
move the nmi_enter()/exit() into the top-level tile NMI handler.
The semantics of the routine change slightly since it is now synchronous
with the remote cores completing the backtraces. Previously it was
asynchronous, but with protection to avoid starting a new remote
backtrace if the old one was still in progress.
Link: http://lkml.kernel.org/r/1472487169-14923-4-git-send-email-cmetcalf@mellanox.com
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Daniel Thompson <daniel.thompson@linaro.org> [arm]
Cc: Petr Mladek <pmladek@suse.com>
Cc: Aaron Tomlin <atomlin@redhat.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently on arm there is code that checks whether it should call
dump_stack() explicitly, to avoid trying to raise an NMI when the
current context is not preemptible by the backtrace IPI. Similarly, the
forthcoming arch/tile support uses an IPI mechanism that does not
support generating an NMI to self.
Accordingly, move the code that guards this case into the generic
mechanism, and invoke it unconditionally whenever we want a backtrace of
the current cpu. It seems plausible that in all cases, dump_stack()
will generate better information than generating a stack from the NMI
handler. The register state will be missing, but that state is likely
not particularly helpful in any case.
Or, if we think it is helpful, we should be capturing and emitting the
current register state in all cases when regs == NULL is passed to
nmi_cpu_backtrace().
Link: http://lkml.kernel.org/r/1472487169-14923-3-git-send-email-cmetcalf@mellanox.com
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm]
Reviewed-by: Petr Mladek <pmladek@suse.com>
Acked-by: Aaron Tomlin <atomlin@redhat.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patch series "improvements to the nmi_backtrace code" v9.
This patch series modifies the trigger_xxx_backtrace() NMI-based remote
backtracing code to make it more flexible, and makes a few small
improvements along the way.
The motivation comes from the task isolation code, where there are
scenarios where we want to be able to diagnose a case where some cpu is
about to interrupt a task-isolated cpu. It can be helpful to see both
where the interrupting cpu is, and also an approximation of where the
cpu that is being interrupted is. The nmi_backtrace framework allows us
to discover the stack of the interrupted cpu.
I've tested that the change works as desired on tile, and build-tested
x86, arm, mips, and sparc64. For x86 I confirmed that the generic
cpuidle stuff as well as the architecture-specific routines are in the
new cpuidle section. For arm, mips, and sparc I just build-tested it
and made sure the generic cpuidle routines were in the new cpuidle
section, but I didn't attempt to figure out which the platform-specific
idle routines might be. That might be more usefully done by someone
with platform experience in follow-up patches.
This patch (of 4):
Currently you can only request a backtrace of either all cpus, or all
cpus but yourself. It can also be helpful to request a remote backtrace
of a single cpu, and since we want that, the logical extension is to
support a cpumask as the underlying primitive.
This change modifies the existing lib/nmi_backtrace.c code to take a
cpumask as its basic primitive, and modifies the linux/nmi.h code to use
the new "cpumask" method instead.
The existing clients of nmi_backtrace (arm and x86) are converted to
using the new cpumask approach in this change.
The other users of the backtracing API (sparc64 and mips) are converted
to use the cpumask approach rather than the all/allbutself approach.
The mips code ignored the "include_self" boolean but with this change it
will now also dump a local backtrace if requested.
Link: http://lkml.kernel.org/r/1472487169-14923-2-git-send-email-cmetcalf@mellanox.com
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm]
Reviewed-by: Aaron Tomlin <atomlin@redhat.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This came to light when implementing native 64-bit atomics for ARCv2.
The atomic64 self-test code uses CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
to check whether atomic64_dec_if_positive() is available. It seems it
was needed when not every arch defined it. However as of current code
the Kconfig option seems needless
- for CONFIG_GENERIC_ATOMIC64 it is auto-enabled in lib/Kconfig and a
generic definition of API is present lib/atomic64.c
- arches with native 64-bit atomics select it in arch/*/Kconfig and
define the API in their headers
So I see no point in keeping the Kconfig option
Compile tested for:
- blackfin (CONFIG_GENERIC_ATOMIC64)
- x86 (!CONFIG_GENERIC_ATOMIC64)
- ia64
Link: http://lkml.kernel.org/r/1473703083-8625-3-git-send-email-vgupta@synopsys.com
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Zhaoxiu Zeng <zhaoxiu.zeng@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Ming Lin <ming.l@ssi.samsung.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is based on s390 version and needed to get rid of
CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Link: http://lkml.kernel.org/r/1473703083-8625-2-git-send-email-vgupta@synopsys.com
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arm64 supports gigantic pages after commit 084bd29810 ("ARM64: mm:
HugeTLB support.") however, it can only be allocated at boottime and
can't be freed.
This patch selects ARCH_HAS_GIGANTIC_PAGE to make gigantic pages can be
allocated and freed at runtime for arch arm64.
Link: http://lkml.kernel.org/r/1475227569-63446-3-git-send-email-xieyisheng1@huawei.com
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Hanjun Guo <guohanjun@huawei.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Avoid making ifdef get pretty unwieldy if many ARCHs support gigantic
page. No functional change with this patch.
Link: http://lkml.kernel.org/r/1475227569-63446-2-git-send-email-xieyisheng1@huawei.com
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Suggested-by: Michal Hocko <mhocko@suse.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Hanjun Guo <guohanjun@huawei.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We get 1 warning when building kernel with W=1:
drivers/char/mem.c:220:12: warning: no previous prototype for 'phys_mem_access_prot_allowed' [-Wmissing-prototypes]
int __weak phys_mem_access_prot_allowed(struct file *file,
In fact, its declaration is spreading to several header files in
different architecture, but need to be declare in common header file.
So this patch moves phys_mem_access_prot_allowed() to pgtable.h.
Link: http://lkml.kernel.org/r/1473751597-12139-1-git-send-email-baoyou.xie@linaro.org
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently significant amount of memory is reserved only in kernel booted
to capture kernel dump using the fa_dump method.
Kernels compiled with CONFIG_DEFERRED_STRUCT_PAGE_INIT will initialize
only certain size memory per node. The certain size takes into account
the dentry and inode cache sizes. Currently the cache sizes are
calculated based on the total system memory including the reserved
memory. However such a kernel when booting the same kernel as fadump
kernel will not be able to allocate the required amount of memory to
suffice for the dentry and inode caches. This results in crashes like
Hence only implement arch_reserved_kernel_pages() for CONFIG_FA_DUMP
configurations. The amount reserved will be reduced while calculating
the large caches and will avoid crashes like the below on large systems
such as 32 TB systems.
Dentry cache hash table entries: 536870912 (order: 16, 4294967296 bytes)
vmalloc: allocation failure, allocated 4097114112 of 17179934720 bytes
swapper/0: page allocation failure: order:0, mode:0x2080020(GFP_ATOMIC)
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.6-master+ #3
Call Trace:
dump_stack+0xb0/0xf0 (unreliable)
warn_alloc_failed+0x114/0x160
__vmalloc_node_range+0x304/0x340
__vmalloc+0x6c/0x90
alloc_large_system_hash+0x1b8/0x2c0
inode_init+0x94/0xe4
vfs_caches_init+0x8c/0x13c
start_kernel+0x50c/0x578
start_here_common+0x20/0xa8
Link: http://lkml.kernel.org/r/1472476010-4709-4-git-send-email-srikar@linux.vnet.ibm.com
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Suggested-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Cc: Hari Bathini <hbathini@linux.vnet.ibm.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The definition of atomic_dec_if_positive() assumes that
atomic_sub_if_positive() exists, which is only the case if
metag specific atomics are used. This results in the following
build error when trying to build metag1_defconfig.
kernel/ucount.c: In function 'dec_ucount':
kernel/ucount.c:211: error:
implicit declaration of function 'atomic_sub_if_positive'
Moving the definition of atomic_dec_if_positive() into the metag
conditional code fixes the problem.
Fixes: 6006c0d8ce ("metag: Atomics, locks and bitops")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: <stable@vger.kernel.org> # 3.9.x-
Pull livepatching updates from Jiri Kosina:
- fix for patching modules that contain .altinstructions or
.parainstructions sections, from Jessica Yu
- make TAINT_LIVEPATCH a per-module flag (so that it's immediately
clear which module caused the taint), from Josh Poimboeuf
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
livepatch/module: make TAINT_LIVEPATCH module-specific
Documentation: livepatch: add section about arch-specific code
livepatch/x86: apply alternatives and paravirt patches after relocations
livepatch: use arch_klp_init_object_loaded() to finish arch-specific tasks
Pull MD updates from Shaohua Li:
"This update includes:
- new AVX512 instruction based raid6 gen/recovery algorithm
- a couple of md-cluster related bug fixes
- fix a potential deadlock
- set nonrotational bit for raid array with SSD
- set correct max_hw_sectors for raid5/6, which hopefuly can improve
performance a little bit
- other minor fixes"
* tag 'md/4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
md: set rotational bit
raid6/test/test.c: bug fix: Specify aligned(alignment) attributes to the char arrays
raid5: handle register_shrinker failure
raid5: fix to detect failure of register_shrinker
md: fix a potential deadlock
md/bitmap: fix wrong cleanup
raid5: allow arbitrary max_hw_sectors
lib/raid6: Add AVX512 optimized xor_syndrome functions
lib/raid6/test/Makefile: Add avx512 gen_syndrome and recovery functions
lib/raid6: Add AVX512 optimized recovery functions
lib/raid6: Add AVX512 optimized gen_syndrome functions
md-cluster: make resync lock also could be interruptted
md-cluster: introduce dlm_lock_sync_interruptible to fix tasks hang
md-cluster: convert the completion to wait queue
md-cluster: protect md_find_rdev_nr_rcu with rcu lock
md-cluster: clean related infos of cluster
md: changes for MD_STILL_CLOSED flag
md-cluster: remove some unnecessary dlm_unlock_sync
md-cluster: use FORCEUNLOCK in lockres_free
md-cluster: call md_kick_rdev_from_array once ack failed
Increase the initial kernel default page mapping size for SMP kernels to 32MB
and add a runtime check which panics early if the kernel is bigger than the
initial mapping size.
This fixes boot crashes of 32bit SMP kernels. Due to the introduction of huge
page support in kernel 4.4 and it's required initial kernel layout in memory, a
32bit SMP kernel usually got bigger (in layout, not size) than 16MB.
Cc: stable@vger.kernel.org #4.4+
Signed-off-by: Helge Deller <deller@gmx.de>
Pull input subsystem updates from Dmitry Torokhov:
"You will get
- a new driver for Elan eKTF2127 touchscreen controllers
- a new "gpio-decoder" driver to read and report state of several
GPIO lines
- an ADC resistor ladder driver
- the ft6326 driver is removed because edt-ft5x06 handles the same
devices just fine.
.. plus the regular slew of driver fixes/enhancements"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (26 commits)
Input: elan_i2c - fix return tests of i2c_smbus_read_block_data()
Input: ektf2127 - mark PM functions as __maybe_unused
Input: snvs_pwrkey - drop input_free_device call if input_register_device fails
Input: add support for Elan eKTF2127 touchscreen controller
Input: serio - add hangup support
Input: tps65218-pwrbutton - add support for tps65217 variant
Input: jornada720_ts - get rid of mach/irqs.h and mach/hardware.h includes
Input: jornada720_kbd - remove unneeded mach/hardware.h include
Input: focaltech - mark focaltech_set_resolution() static
Input: wdt87xx_i2c - fix the flash erase issue
Input: gpio-keys-polled - don't use unit-address with button nodes
Input: add generic input driver to read encoded GPIO lines
Input: add ADC resistor ladder driver
Input: pegasus_notetaker - directly include workqueue header
Input: elants_i2c - get product id on recovery mode for FW update
Input: wm97xx - remove deprecated create_singletheread_workqueue
Input: mc13783_ts - remove deprecated create_singletheread_workqueue
Input: psmouse - remove deprecated create_singletheread_workqueue
Input: jornada720_kbd - switch to using dev_dbg
Input: jornada720_kbd - get rid of mach/irqs.h include
...
Memblock is the standard kernel boot-time memory tracker/allocator. Use it
instead of the bootmem allocator. This allows using kmemleak, CMA and
other features.
Signed-off-by: Helge Deller <deller@gmx.de>
When a CPU is physically added to a system then the MADT table is not
updated.
If subsequently a kdump kernel is started on that physically added CPU then
the ACPI enumeration fails to provide the information for this CPU which is
now the boot CPU of the kdump kernel.
As a consequence, generic_processor_info() is not invoked for that CPU so
the number of enumerated processors is 0 and none of the initializations,
including the logical package id management, are performed.
We have code which relies on the correctness of the logical package map and
other information which is initialized via generic_processor_info().
Executing such code will result in undefined behaviour or kernel crashes.
This problem applies only to the kdump kernel because a normal kexec will
switch to the original boot CPU, which is enumerated in MADT, before
jumping into the kexec kernel.
The boot code already has a check for num_processors equal 0 in
prefill_possible_map(). We can use that check as an indicator that the
enumeration of the boot CPU did not happen and invoke generic_processor_info()
for it. That initializes the relevant data for the boot CPU and therefore
prevents subsequent failure.
[ tglx: Refined the code and rewrote the changelog ]
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Fixes: 1f12e32f4c ("x86/topology: Create logical package id")
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Len Brown <len.brown@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: dyoung@redhat.com
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: kexec@lists.infradead.org
Link: http://lkml.kernel.org/r/1475514432-27682-1-git-send-email-prarit@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This is bit large pile of code which bring in some nice additions:
- Error reporting: we have added a new mechanism for users of dmaenegine to
register a callback_result which tells them the result of the dma
transaction. Right now only one user ntb is using it.
- As we discussed on KS mailing list and pointed out NO_IRQ has no place in
kernel, this also remove NO_IRQ from dmaengine subsystem (both arm and
ppc users)
- Support for IOMMU slave transfers and it implementation for arm.
- To get better build coverage, enable COMPILE_TEST for bunch of driver,
and fix the warning and sparse complaints on these.
- Apart from above, usual updates spread across drivers.
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Merge tag 'dmaengine-4.9-rc1' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine updates from Vinod Koul:
"This is bit large pile of code which bring in some nice additions:
- Error reporting: we have added a new mechanism for users of
dmaenegine to register a callback_result which tells them the
result of the dma transaction. Right now only one user (ntb) is
using it.
- As we discussed on KS mailing list and pointed out NO_IRQ has no
place in kernel, this also remove NO_IRQ from dmaengine subsystem
(both arm and ppc users)
- Support for IOMMU slave transfers and its implementation for arm.
- To get better build coverage, enable COMPILE_TEST for bunch of
driver, and fix the warning and sparse complaints on these.
- Apart from above, usual updates spread across drivers"
* tag 'dmaengine-4.9-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (169 commits)
async_pq_val: fix DMA memory leak
dmaengine: virt-dma: move function declarations
dmaengine: omap-dma: Enable burst and data pack for SG
DT: dmaengine: rcar-dmac: document R8A7743/5 support
dmaengine: fsldma: Unmap region obtained by of_iomap
dmaengine: jz4780: fix resource leaks on error exit return
dma-debug: fix ia64 build, use PHYS_PFN
dmaengine: coh901318: fix integer overflow when shifting more than 32 places
dmaengine: edma: avoid uninitialized variable use
dma-mapping: fix m32r build warning
dma-mapping: fix ia64 build, use PHYS_PFN
dmaengine: ti-dma-crossbar: enable COMPILE_TEST
dmaengine: omap-dma: enable COMPILE_TEST
dmaengine: edma: enable COMPILE_TEST
dmaengine: ti-dma-crossbar: Fix of_device_id data parameter usage
dmaengine: ti-dma-crossbar: Correct type for of_find_property() third parameter
dmaengine/ARM: omap-dma: Fix the DMAengine compile test on non OMAP configs
dmaengine: edma: Rename set_bits and remove unused clear_bits helper
dmaengine: edma: Use correct type for of_find_property() third parameter
dmaengine: edma: Fix of_device_id data parameter usage (legacy vs TPCC)
...
The big change is the addition of the hwlat tracer. It not only detects
SMIs, but also other latency that's caused by the hardware. I have detected
some latency from large boxes having bus contention.
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Merge tag 'trace-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"This release cycle is rather small. Just a few fixes to tracing.
The big change is the addition of the hwlat tracer. It not only
detects SMIs, but also other latency that's caused by the hardware. I
have detected some latency from large boxes having bus contention"
* tag 'trace-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Call traceoff trigger after event is recorded
ftrace/scripts: Add helper script to bisect function tracing problem functions
tracing: Have max_latency be defined for HWLAT_TRACER as well
tracing: Add NMI tracing in hwlat detector
tracing: Have hwlat trace migrate across tracing_cpumask CPUs
tracing: Add documentation for hwlat_detector tracer
tracing: Added hardware latency tracer
ftrace: Access ret_stack->subtime only in the function profiler
function_graph: Handle TRACE_BPUTS in print_graph_comment
tracing/uprobe: Drop isdigit() check in create_trace_uprobe
- Switch to new CPU hotplug mechanism.
- Support driver_override in pciback.
- Require vector callback for HVM guests (the alternate mechanism via
the platform device has been broken for ages).
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Merge tag 'for-linus-4.9-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from David Vrabel:
"xen features and fixes for 4.9:
- switch to new CPU hotplug mechanism
- support driver_override in pciback
- require vector callback for HVM guests (the alternate mechanism via
the platform device has been broken for ages)"
* tag 'for-linus-4.9-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/x86: Update topology map for PV VCPUs
xen/x86: Initialize per_cpu(xen_vcpu, 0) a little earlier
xen/pciback: support driver_override
xen/pciback: avoid multiple entries in slot list
xen/pciback: simplify pcistub device handling
xen: Remove event channel notification through Xen PCI platform device
xen/events: Convert to hotplug state machine
xen/x86: Convert to hotplug state machine
x86/xen: add missing \n at end of printk warning message
xen/grant-table: Use kmalloc_array() in arch_gnttab_valloc()
xen: Make VPMU init message look less scary
xen: rename xen_pmu_init() in sys-hypervisor.c
hotplug: Prevent alloc/free of irq descriptors during cpu up/down (again)
xen/x86: Move irq allocation from Xen smp_op.cpu_up()
All architectures:
Move `make kvmconfig` stubs from x86; use 64 bits for debugfs stats.
ARM:
Important fixes for not using an in-kernel irqchip; handle SError
exceptions and present them to guests if appropriate; proxying of GICV
access at EL2 if guest mappings are unsafe; GICv3 on AArch32 on ARMv8;
preparations for GICv3 save/restore, including ABI docs; cleanups and
a bit of optimizations.
MIPS:
A couple of fixes in preparation for supporting MIPS EVA host kernels;
MIPS SMP host & TLB invalidation fixes.
PPC:
Fix the bug which caused guests to falsely report lockups; other minor
fixes; a small optimization.
s390:
Lazy enablement of runtime instrumentation; up to 255 CPUs for nested
guests; rework of machine check deliver; cleanups and fixes.
x86:
IOMMU part of AMD's AVIC for vmexit-less interrupt delivery; Hyper-V
TSC page; per-vcpu tsc_offset in debugfs; accelerated INS/OUTS in
nVMX; cleanups and fixes.
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Merge tag 'kvm-4.9-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Radim Krčmář:
"All architectures:
- move `make kvmconfig` stubs from x86
- use 64 bits for debugfs stats
ARM:
- Important fixes for not using an in-kernel irqchip
- handle SError exceptions and present them to guests if appropriate
- proxying of GICV access at EL2 if guest mappings are unsafe
- GICv3 on AArch32 on ARMv8
- preparations for GICv3 save/restore, including ABI docs
- cleanups and a bit of optimizations
MIPS:
- A couple of fixes in preparation for supporting MIPS EVA host
kernels
- MIPS SMP host & TLB invalidation fixes
PPC:
- Fix the bug which caused guests to falsely report lockups
- other minor fixes
- a small optimization
s390:
- Lazy enablement of runtime instrumentation
- up to 255 CPUs for nested guests
- rework of machine check deliver
- cleanups and fixes
x86:
- IOMMU part of AMD's AVIC for vmexit-less interrupt delivery
- Hyper-V TSC page
- per-vcpu tsc_offset in debugfs
- accelerated INS/OUTS in nVMX
- cleanups and fixes"
* tag 'kvm-4.9-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (140 commits)
KVM: MIPS: Drop dubious EntryHi optimisation
KVM: MIPS: Invalidate TLB by regenerating ASIDs
KVM: MIPS: Split kernel/user ASID regeneration
KVM: MIPS: Drop other CPU ASIDs on guest MMU changes
KVM: arm/arm64: vgic: Don't flush/sync without a working vgic
KVM: arm64: Require in-kernel irqchip for PMU support
KVM: PPC: Book3s PR: Allow access to unprivileged MMCR2 register
KVM: PPC: Book3S PR: Support 64kB page size on POWER8E and POWER8NVL
KVM: PPC: Book3S: Remove duplicate setting of the B field in tlbie
KVM: PPC: BookE: Fix a sanity check
KVM: PPC: Book3S HV: Take out virtual core piggybacking code
KVM: PPC: Book3S: Treat VTB as a per-subcore register, not per-thread
ARM: gic-v3: Work around definition of gic_write_bpr1
KVM: nVMX: Fix the NMI IDT-vectoring handling
KVM: VMX: Enable MSR-BASED TPR shadow even if APICv is inactive
KVM: nVMX: Fix reload apic access page warning
kvmconfig: add virtio-gpu to config fragment
config: move x86 kvm_guest.config to a common location
arm64: KVM: Remove duplicating init code for setting VMID
ARM: KVM: Support vgic-v3
...
Convert the MIPS SEAD-3 board support to be a generic board, supported
by generic kernels.
Because the SEAD-3 boot protocol was defined long ago and we don't want
to force a switch to the UHI protocol, SEAD-3 is added as a legacy board
which is detected by reading the REVISION register. This may technically
not be a valid memory read & future work will include attempting to
handle that gracefully. In practice since SEAD-3 is the only legacy
board supported by the generic kernel so far the read will only happen
on SEAD-3 boards, and even once Malta is converted the same REVISION
register exists there too. Other boards such as Boston, Ci20 & Ci40 will
use the UHI boot protocol & thus not run any of the legacy board detect
functions.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14354/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Introduce a "generic" platform, which aims to be board-agnostic by
making use of device trees passed by the boot protocol defined in the
MIPS UHI (Universal Hosting Interface) specification. Provision is made
for supporting boards which use a legacy boot protocol that can't be
changed, but adding support for such boards or any others is left to
followon patches.
Right now the built kernels expect to be loaded to 0x80100000, ie. in
kseg0. This is fine for the vast majority of MIPS platforms, but
nevertheless it would be good to remove this limitation in the future by
mapping the kernel via the TLB such that it can be loaded anywhere & map
itself appropriately.
Configuration is handled by dynamically generating configs using
scripts/kconfig/merge_config.sh, somewhat similar to the way powerpc
makes use of it. This allows for variations upon the configuration, eg.
differing architecture revisions or subsets of driver support for
differing boards, to be handled without having a large number of
defconfig files.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14353/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Add support for generating kernel images in the Flattened Image Tree
(.itb) format as supported by U-Boot. This format is essentially a
Flattened Device Tree binary containing images (kernels, DTBs, ramdisks)
and configurations which link those images together. The big advantages
of FIT images over the uImage format are:
- We can include FDTs in the kernel image in a way that the bootloader
can extract it & manipulate it before providing it to the kernel.
Thus we can ship FDTs as part of the kernel giving us the advantages
of being able to develop & maintain the DT within the kernel tree,
but also have the benefits of the bootloader being able to
manipulate the FDT. Example uses for this would be to inject the
kernel command line into the chosen node, or to fill in the correct
memory size.
- We can include multiple configurations in a single kernel image.
This means that a single FIT image can, given appropriate
bootloaders, be booted on different boards with the bootloader
selecting an appropriate configuration & providing the correct FDT
to the kernel.
- We can support a multitude of hashes over the data.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14352/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
On MIPS64 we define the default CAC_BASE as one of the xkphys regions of
the virtual address space. Since the CCA is encoded in bits 61:59 of
xkphys addresses, fixing CAC_BASE to any particular one prevents us from
dynamically changing the CCA as we do for MIPS32 where CAC_BASE is
placed within kseg0. In order to make the kernel more generic, drop the
current kludge that gives CAC_BASE CCA=3 if CONFIG_DMA_NONCOHERENT is
selected (disregarding CONFIG_DMA_MAYBE_COHERENT) & CCA=5 (which is not
standardised by the architecture) otherwise. Instead read Config.K0 and
generate the appropriate offset into xkphys, presuming that either the
bootloader or early kernel code will have configured Config.K0
appropriately. This seems like the best option for a generic
implementation.
The ip27 spaces.h is adjusted to set its former value of CAC_BASE, since
it's the only user of CAC_BASE from assembly (in its smp_slave_setup
macro). This allows the generic case to focus solely on C code without
breaking ip27.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14351/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
If a bus error occurs on a system with a MIPS Coherence Manager (CM)
then the CM may hold useful diagnostic information. Printing this out
has so far been left up to boards, with the requirement that they
register a board_be_handler function & call mips_cm_error_decode() from
there.
In order to avoid boards other than Malta needing to duplicate this
code, call mips_cm_error_decode() automatically if the board registers
no board_be_handler, and remove the Malta implementation of that.
This patch results in no functional change, but removes a further piece
of platform-specific code.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14350/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
On some MIPS systems, a subset of devices may have DMA coherent with CPU
caches. For example in systems including a MIPS I/O Coherence Unit
(IOCU), some devices may be connected to that IOCU whilst others are
not.
Prior to this patch, we have a plat_device_is_coherent() function but no
implementation which does anything besides return a global true or
false, optionally chosen at runtime. For devices such as those described
above this is insufficient.
Fix this by tracking DMA coherence on a per-device basis with a
dma_coherent field in struct dev_archdata. Setting this from
arch_setup_dma_ops() takes care of devices which set the dma-coherent
property via device tree, and any PCI devices beneath a bridge described
in DT, automatically.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14349/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
There are no cases where plat_device_is_coherent() will return zero
whilst hw_coherentio is non-zero, and acting any differently in such a
case doesn't make much sense - if a device is non-coherent with the CPU
caches then access to memory "coherent" with DMA must be uncached. Clean
up the nonsensical case.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14348/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The coherentio variable has previously been used as a boolean value,
indicating whether the user specified that coherent I/O should be
enabled or disabled. It failed to take into account the case where the
user does not specify any preference, in which case it makes sense that
we should default to coherent I/O if the hardware supports it
(hw_coherentio is non-zero).
Introduce an enum to clarify the 3 different values of coherentio & use
it throughout the code, modifying plat_device_is_coherent() &
r4k_cache_init() to take into account the default case.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Paul Burton <paul.burton@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/14347/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Introduce support for PCI drivers using only functionality provided
generically by the PCI subsystem, by adding the minimum arch-provided
functions required.
The driver this has been developed for & tested with the xilinx-pcie on
a MIPS Boston development board.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14346/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Introduce 2 Kconfig symbols, CONFIG_PCI_DRIVERS_GENERIC &
CONFIG_PCI_DRIVERS_LEGACY, which indicate whether the system should be
built to for PCI drivers using the MIPS-specific struct pci_controller
API (hereafter "legacy" drivers) or more generic drivers using only
functionality provided by the PCI core (hereafter "generic" drivers).
The Kconfig entries are created such that platforms have to select
CONFIG_PCI_DRIVERS_GENERIC if they wish to use it - that is, the default
is CONFIG_PCI_DRIVERS_LEGACY so that existing platforms need no
modification.
The functions declared in pci.h are rearranged with those provided only
by pci-legacy.c being guarded by an #ifdef CONFIG_PCI_DRIVERS_LEGACY to
ensure they are only used in configurations where they are implemented.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14345/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Split out the parts of pci.c that are used by existing systems with
MIPS-style PCI drivers but that will not be used by systems with more
generic PCI drivers such as pcie-xilinx. This is done in preparation for
allowing configurations where the code moved to pci-legacy.c is not
built.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Paul Burton <paul.burton@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/14344/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The MIPS implementation of pcibios_assign_all_busses trivially returns
1. Implement it as a static function in asm/pci.h such that the compiler
can inline it & optimise out never-taken paths.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14343/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
In preparation for allowing configurations in which pcibios_init is not
included, make pcibios_set_cache_line_size an initcall. arch_initcall is
used such that it runs before the pcibios_init subsys_initcall for
platforms that continue to use it.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14342/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Introduce support for CONFIG_PCI_DOMAINS_GENERIC, allowing for platforms
to make use of generic PCI domains instead of the MIPS-specific
implementation. The set_pci_need_domain_info function is introduced to
abstract away the removed need_domain_info field in struct
pci_controller, and pcibios_scanbus is adjusted to use the pci_domain_nr
accessor instead of directly accessing the index field.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14341/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Current instruction decoder for uprobe/kprobe handler only handles
branches with delay slots. For compact branches the behaviour is rather
unpredictable - and depending on the encoding of a compact branch
instruction may result in one (or more) of:
- executing an instruction that follows a branch which wasn't in a delay
slot and shouldn't have been executed
- incorrectly emulating a branch leading to a jump to a wrong location
- unexpected branching out of the single-stepped code and never reaching
the breakpoint that should terminate the probe handler
Results of these actions are generally unpredictable, but can end up
with a probed application or kernel crash, so disable placing probes on
compact branches until they are handled properly.
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14336/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Currently both kprobes and uprobes code have definitions of the
insn_has_delay_slot method. Move it to a separate header as an inline
method that each probe-specific method can later use.
No functional change intended, although the methods slightly varied in
the constraints they set for the methods - the uprobes one was chosen as
it is slightly more specific when filtering opcode fields.
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14335/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Make use of the generic syscon-reboot driver to reboot the Malta board,
reducing the amount of platform code it requires.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Stephan Linz <linz@li-pro.net>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14279/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Add the DT nodes required to probe the CFI compatible parallel monitor
flash found on the Malta development board, and remove the platform
code that was previously doing it. Delete the now-empty malta-platform.c
file. Adjust the Malta defconfigs that enable MTD & the pflash/CFI
driver to enable CONFIG_MTD_PHYSMAP_OF rather than CONFIG_MTD_PHYSMAP in
order to preserve their behaviour.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14278/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Probe the CPU, GIC & i8259 interrupt controllers present in the Malta
system using device tree. This enables interrupts to be provided to
devices using device tree as they are moved over to being probed using
it.
Since Malta is very configurable it's unknown whether a GIC will be
present at compile time. In order to support both cases the
malta_dt_shim code is added in order to detect whether a GIC is present,
adjusting the DT to route interrupts correctly and nop out the GIC node
if no GIC is found.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14274/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Malta boards can have more than 256MB DDR available, but we have
previously only made use of up to 256MB (ie. the DDR accessible via
kseg0) by default, without the user manually specifying mem= kernel
parameters. This patch causes all available DDR, as reported by the
bootloader via the ememsize or memsize environment variables or
optionally on the command line, to be used when possible without the
user needing to manually provide the memory ranges.
Malta now has 2 subtly different memory maps which have to be taken into
account when setting this up. The original memory map (referred to by
the code as v1) has up to 2GB of DDR aliased in both the upper & lower
halves of the 32 bit physical address space, with a 256MB I/O region
obscuring 0x10000000-0x1fffffff only in the lower alias. The revised v2
memory map is flat with up to 4GB DDR starting from 0x0, and the I/O
region obscures 256MB of DDR which becomes inacessible. The memory map
in use is indicated by a register provided by the rocit2 system
controller, which is checked in order to set up the kernels memory
ranges accordingly.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14273/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Set the PCI_BAR0 register in all configurations such that PCI devices
can perform DMA to all of the bottom 2GB of the physical address space.
This is imperfect if we make use of the legacy Malta memory map, but it
is an improvement on the inconsistent values setup before.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14272/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The i8259A_irq_pending function is unused. Remove the dead code.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14271/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The default i8259 polling function (i8259_irq) is nicely generic but is
fairly costly. Platforms often provide an alternative means of polling
for an i8259 interrupt, and when using the i8259 without device tree
have typically just chained its parent interrupt to their own handler
function. In order to allow for platform-specific polling functions to
be used in cases where the driver is probed via device tree, provide an
i8259_set_poll function that accepts a pointer to an alternative poll
function that will override the default.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14270/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Pull sparc updates from David Miller:
"Besides some cleanups the major thing here is supporting relaxed
ordering PCIe transactions on newer sparc64 machines, from Chris
Hyser"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc: fixing ident and beautifying code
sparc64: Enable setting "relaxed ordering" in IOMMU mappings
sparc64: Enable PCI IOMMU version 2 API
sparc: migrate exception table users off module.h and onto extable.h
The SEAD3 board defines a custom implementation of read_persistent_clock
which does exactly the same dummy operation as the generic weak version.
Remove the not really implemented custom version.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14064/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Probe the img-ascii-lcd driver using device tree in order to display a
message on the SEAD3 board's LCD display, and remove the platform code
that was formerly performing this function. This removes more platform
code and moves SEAD3 further towards being entirely DT-based.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14063/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Pull ARM updates from Russell King:
- Correct ARMs dma-mapping to use the correct printk format strings.
- Avoid defining OBJCOPYFLAGS globally which upsets lkdtm rodata
testing.
- Cleanups to ARMs asm/memory.h include.
- L2 cache cleanups.
- Allow flat nommu binaries to be executed on ARM MMU systems.
- Kernel hardening - add more read-only after init annotations,
including making some kernel vdso variables const.
- Ensure AMBA primecell clocks are appropriately defaulted.
- ARM breakpoint cleanup.
- Various StrongARM 11x0 and companion chip (SA1111) updates to bring
this legacy platform to use more modern APIs for (eg) GPIOs and
interrupts, which will allow us in the future to reduce some of the
board-level driver clutter and elimate function callbacks into board
code via platform data. There still appears to be interest in these
platforms!
- Remove the now redundant secure_flush_area() API.
- Module PLT relocation optimisations. Ard says: This series of 4
patches optimizes the ARM PLT generation code that is invoked at
module load time, to get rid of the O(n^2) algorithm that results in
pathological load times of 10 seconds or more for large modules on
certain STB platforms.
- ARMv7M cache maintanence support.
- L2 cache PMU support
* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (35 commits)
ARM: sa1111: provide to_sa1111_device() macro
ARM: sa1111: add sa1111_get_irq()
ARM: sa1111: clean up duplication in IRQ chip implementation
ARM: sa1111: implement a gpio_chip for SA1111 GPIOs
ARM: sa1111: move irq cleanup to separate function
ARM: sa1111: use devm_clk_get()
ARM: sa1111: use devm_kzalloc()
ARM: sa1111: ensure we only touch RAB bus type devices when removing
ARM: 8611/1: l2x0: add PMU support
ARM: 8610/1: V7M: Add dsb before jumping in handler mode
ARM: 8609/1: V7M: Add support for the Cortex-M7 processor
ARM: 8608/1: V7M: Indirect proc_info construction for V7M CPUs
ARM: 8607/1: V7M: Wire up caches for V7M processors with cache support.
ARM: 8606/1: V7M: introduce cache operations
ARM: 8605/1: V7M: fix notrace variant of save_and_disable_irqs
ARM: 8604/1: V7M: Add support for reading the CTR with read_cpuid_cachetype()
ARM: 8603/1: V7M: Add addresses for mem-mapped V7M cache operations
ARM: 8602/1: factor out CSSELR/CCSIDR operations that use cp15 directly
ARM: kernel: avoid brute force search on PLT generation
ARM: kernel: sort relocation sections before allocating PLTs
...
Pull ARM fix from Russell King:
"A 5% error in delay calculation was introduced during the last merge
window, which had gone un-noticed until yesterday"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: fix delays
The 2 line * 16 character LCD display on the SEAD3 board has no real use
as a framebuffer device. It's far too small to produce any meaningful
output if used as the kernel console, SEAD3 is a development board that
will essentially always have a far more useful UART connection & the
code in sead3-display.c will overwrite whatever's on the display every
second anyway. Remove this unused code.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14059/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Early during boot topology_update_package_map() computes
logical_pkg_ids for all present processors.
Later, when processors are brought up, identify_cpu() updates
these values based on phys_pkg_id which is a function of
initial_apicid. On PV guests the latter may point to a
non-existing node, causing logical_pkg_ids to be set to -1.
Intel's RAPL uses logical_pkg_id (as topology_logical_package_id())
to index its arrays and therefore in this case will point to index
65535 (since logical_pkg_id is a u16). This could lead to either a
crash or may actually access random memory location.
As a workaround, we recompute topology during CPU bringup to reset
logical_pkg_id to a valid value.
(The reason for initial_apicid being bogus is because it is
initial_apicid of the processor from which the guest is launched.
This value is CPUID(1).EBX[31:24])
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Use of_property_read_bool instead of open-coding it as fpcu_has.
Convert the members of struct cpuinfo from u32 to bool accordingly as
they are only used as boolean anyhow.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Ley Foon Tan <lftan@altera.com>
When compiling on x86 with CONFIG_OPROFILE=m and CONFIG_FRAME_POINTER=n,
the oprofile module fails to link:
ERROR: ftrace_graph_ret_addr" [arch/x86/oprofile/oprofile.ko] undefined!
The problem was introduced when oprofile was converted to use the new
x86 unwinder. When frame pointers are disabled, the "guess" unwinder's
unwind_get_return_address() is an inline function which calls
ftrace_graph_ret_addr(), which is not exported.
Fix it by converting the "guess" version of unwind_get_return_address()
to an exported out-of-line function, just like its frame pointer
counterpart.
Reported-by: Karl Beldan <karl.beldan@gmail.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: ec2ad9ccf1 ("oprofile/x86: Convert x86_backtrace() to use the new unwinder")
Link: http://lkml.kernel.org/r/be08d589f6474df78364e081c42777e382af9352.1475731632.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Commit 215e362daf ("ARM: 8306/1: loop_udelay: remove bogomips value
limitation") tried to increase the bogomips limitation, but in doing
so messed up udelay such that it always gives about a 5% error in the
delay, even if we use a timer.
The calculation is:
loops = UDELAY_MULT * us_delay * ticks_per_jiffy >> UDELAY_SHIFT
Originally, UDELAY_MULT was ((UL(2199023) * HZ) >> 11) and UDELAY_SHIFT
30. Assuming HZ=100, us_delay of 1000 and ticks_per_jiffy of 1660000
(eg, 166MHz timer, 1ms delay) this would calculate:
((UL(2199023) * HZ) >> 11) * 1000 * 1660000 >> 30
=> 165999
With the new values of 2047 * HZ + 483648 * HZ / 1000000 and 31, we get:
(2047 * HZ + 483648 * HZ / 1000000) * 1000 * 1660000 >> 31
=> 158269
which is incorrect. This is due to a typo - correcting it gives:
(2147 * HZ + 483648 * HZ / 1000000) * 1000 * 1660000 >> 31
=> 165999
i.o.w, the original value.
Fixes: 215e362daf ("ARM: 8306/1: loop_udelay: remove bogomips value limitation")
Cc: <stable@vger.kernel.org>
Reviewed-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Good evening,
Following LinuxCodingStyle documentation and with the help of Sam, fixed
severals identation issues in the code, and few others cosmetic changes
And last and i hope least fixing my name :)
Signed-off-by : Dominique Carrel <netmonk@netmonk.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Enable relaxed ordering for memory writes in IOMMU TSB entry from
dma_4v_alloc_coherent(), dma_4v_map_page() and dma_4v_map_sg() when
dma_attrs DMA_ATTR_WEAK_ORDERING is set. This requires PCI IOMMU I/O
Translation Services version 2.0 API.
Many PCIe devices allow enabling relaxed-ordering (memory writes bypassing
other memory writes) for various DMA buffers. A notable exception is the
Mellanox mlx4 IB adapter. Due to the nature of x86 HW this appears to have
little performance impact there. On SPARC HW however, this results in major
performance degradation getting only about 3Gbps. Enabling RO in the IOMMU
entries corresponding to mlx4 data buffers increases the throughput to
about 13 Gbps.
Orabug: 19245907
Signed-off-by: Chris Hyser <chris.hyser@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Enable Version 2 of the PCI IOMMU API needed for advanced features
such as PCI Relaxed Ordering and greater than 2 GB DMA address
space per root complex.
Signed-off-by: Chris Hyser <chris.hyser@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
These files were only including module.h for exception table
related functions. We've now separated that content out into its
own file "extable.h" so now move over to that and avoid all the
extra header content in module.h that we don't really need to compile
these files.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull m68knommu updates from Greg Ungerer:
"The bulk of the changes here are to clean up the ColdFire 5441x SoC
support so that it can run with MMU enabled. We have only supported it
with MMU disabled up to now.
There is also a few individual bug fixes across the ColdFire support
code"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k: let clk_disable() return immediately if clk is NULL
m68knommu: convert printk(KERN_INFO) to pr_info()
m68knommu: clean up uClinux boot log output
m68k: generalize uboot command line support
m68k: don't panic if no hardware FPU defined
m68k: only generate FPU instructions if CONFIG_FPU enabled
m68k: always make available dump_fpu()
m68k: generalize io memory region setup for ColdFire ACR registers
m68k: move ColdFire _bootmem_alloc code
m68k: report correct FPU type on ColdFire MMU platforms
m68k: set appropriate machine type for m5411x SoC platforms
m68k: move CONFIG_FPU set to per-CPU configuration
m68knommu: fix IO write size in nettel pin set
m68knommu: switch to using IO access methods in WildFire board code
m68knommu: fix early setup to not access variables
- add new kernel memory layouts for MMUv3 cores: with 256MB and 512MB
KSEG size, starting at physical address other than 0;
- make kernel load address configurable;
- clean up kernel memory layout macros;
- drop sysmem early allocator and switch to memblock;
- enable kmemleak and memory reservation from the device tree;
- wire up new syscalls: userfaultfd, membarrier, mlock2, copy_file_range,
preadv2 and pwritev2;
- add new platform: Cadence Configurable System Platform (CSP) and new
core variant for it: xt_lnx;
- rearrange CCOUNT calibration code, make most of it generic;
- improve machine reset code (XTFPGA now reboots reliably with MMUv3
cores);
- provide default memmap command line option for configurations without
device tree support;
- ISS fixes: simdisk is now capable of using highmem pages, panic
correctly terminates simulator.
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Merge tag 'xtensa-20161005' of git://github.com/jcmvbkbc/linux-xtensa
Pull Xtensa updates from Max Filippov:
"Updates for the xtensa architecture. It is a combined set of patches
for 4.8 that never got to the mainline and new patches for 4.9.
- add new kernel memory layouts for MMUv3 cores: with 256MB and 512MB
KSEG size, starting at physical address other than 0
- make kernel load address configurable
- clean up kernel memory layout macros
- drop sysmem early allocator and switch to memblock
- enable kmemleak and memory reservation from the device tree
- wire up new syscalls: userfaultfd, membarrier, mlock2,
copy_file_range, preadv2 and pwritev2
- add new platform: Cadence Configurable System Platform (CSP) and
new core variant for it: xt_lnx
- rearrange CCOUNT calibration code, make most of it generic
- improve machine reset code (XTFPGA now reboots reliably with MMUv3
cores)
- provide default memmap command line option for configurations
without device tree support
- ISS fixes: simdisk is now capable of using highmem pages, panic
correctly terminates simulator"
* tag 'xtensa-20161005' of git://github.com/jcmvbkbc/linux-xtensa: (24 commits)
xtensa: disable MMU initialization option on MMUv2 cores
xtensa: add default memmap and mmio32native options to defconfigs
xtensa: add default memmap option to common_defconfig
xtensa: add default memmap option to iss_defconfig
xtensa: ISS: allow simdisk to use high memory buffers
xtensa: ISS: define simc_exit and use it instead of inline asm
xtensa: xtfpga: group platform_* functions together
xtensa: rearrange CCOUNT calibration
xtensa: xtfpga: use clock provider, don't update DT
xtensa: Tweak xuartps UART driver Rx watermark for Cadence CSP config.
xtensa: initialize MMU before jumping to reset vector
xtensa: fix icountlevel setting in cpu_reset
xtensa: extract common CPU reset code into separate function
xtensa: Added Cadence CSP kernel configuration for Xtensa
xtensa: fix default kernel load address
xtensa: wire up new syscalls
xtensa: support reserved-memory DT node
xtensa: drop sysmem and switch to memblock
xtensa: minimize use of PLATFORM_DEFAULT_MEM_{ADDR,SIZE}
xtensa: cleanup MMU setup and kernel layout macros
...
