Merge cpufreq updates for 5.17-rc1:
- Add new P-state driver for AMD processors (Huang Rui).
- Fix initialization of min and max frequency QoS requests in the
cpufreq core (Rafael Wysocki).
- Fix EPP handling on Alder Lake in intel_pstate (Srinivas Pandruvada).
- Make intel_pstate update cpuinfo.max_freq when notified of HWP
capabilities changes and drop a redundant function call from that
driver (Rafael Wysocki).
- Improve IRQ support in the Qcom cpufreq driver (Ard Biesheuvel,
Stephen Boyd, Vladimir Zapolskiy).
- Fix double devm_remap() in the Mediatek cpufreq driver (Hector Yuan).
- Introduce thermal pressure helpers for cpufreq CPU cooling (Lukasz
Luba).
- Make cpufreq use default_groups in kobj_type (Greg Kroah-Hartman).
* pm-cpufreq: (32 commits)
x86, sched: Fix undefined reference to init_freq_invariance_cppc() build error
cpufreq: amd-pstate: Fix Kconfig dependencies for AMD P-State
cpufreq: amd-pstate: Fix struct amd_cpudata kernel-doc comment
MAINTAINERS: Add AMD P-State driver maintainer entry
Documentation: amd-pstate: Add AMD P-State driver introduction
cpufreq: amd-pstate: Add AMD P-State performance attributes
cpufreq: amd-pstate: Add AMD P-State frequencies attributes
cpufreq: amd-pstate: Add boost mode support for AMD P-State
cpufreq: amd-pstate: Add trace for AMD P-State module
cpufreq: amd-pstate: Introduce the support for the processors with shared memory solution
cpufreq: amd-pstate: Add fast switch function for AMD P-State
cpufreq: amd-pstate: Introduce a new AMD P-State driver to support future processors
ACPI: CPPC: Add CPPC enable register function
ACPI: CPPC: Check present CPUs for determining _CPC is valid
ACPI: CPPC: Implement support for SystemIO registers
x86/msr: Add AMD CPPC MSR definitions
x86/cpufeatures: Add AMD Collaborative Processor Performance Control feature flag
cpufreq: use default_groups in kobj_type
cpufreq: mediatek-hw: Fix double devm_remap in hotplug case
cpufreq: intel_pstate: Update cpuinfo.max_freq on HWP_CAP changes
...
- KCSAN enabled for arm64.
- Additional kselftests to exercise the syscall ABI w.r.t. SVE/FPSIMD.
- Some more SVE clean-ups and refactoring in preparation for SME support
(scalable matrix extensions).
- BTI clean-ups (SYM_FUNC macros etc.)
- arm64 atomics clean-up and codegen improvements.
- HWCAPs for FEAT_AFP (alternate floating point behaviour) and
FEAT_RPRESS (increased precision of reciprocal estimate and reciprocal
square root estimate).
- Use SHA3 instructions to speed-up XOR.
- arm64 unwind code refactoring/unification.
- Avoid DC (data cache maintenance) instructions when DCZID_EL0.DZP == 1
(potentially set by a hypervisor; user-space already does this).
- Perf updates for arm64: support for CI-700, HiSilicon PCIe PMU,
Marvell CN10K LLC-TAD PMU, miscellaneous clean-ups.
- Other fixes and clean-ups; highlights: fix the handling of erratum
1418040, correct the calculation of the nomap region boundaries,
introduce io_stop_wc() mapped to the new DGH instruction (data
gathering hint).
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
- KCSAN enabled for arm64.
- Additional kselftests to exercise the syscall ABI w.r.t. SVE/FPSIMD.
- Some more SVE clean-ups and refactoring in preparation for SME
support (scalable matrix extensions).
- BTI clean-ups (SYM_FUNC macros etc.)
- arm64 atomics clean-up and codegen improvements.
- HWCAPs for FEAT_AFP (alternate floating point behaviour) and
FEAT_RPRESS (increased precision of reciprocal estimate and
reciprocal square root estimate).
- Use SHA3 instructions to speed-up XOR.
- arm64 unwind code refactoring/unification.
- Avoid DC (data cache maintenance) instructions when DCZID_EL0.DZP ==
1 (potentially set by a hypervisor; user-space already does this).
- Perf updates for arm64: support for CI-700, HiSilicon PCIe PMU,
Marvell CN10K LLC-TAD PMU, miscellaneous clean-ups.
- Other fixes and clean-ups; highlights: fix the handling of erratum
1418040, correct the calculation of the nomap region boundaries,
introduce io_stop_wc() mapped to the new DGH instruction (data
gathering hint).
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (81 commits)
arm64: Use correct method to calculate nomap region boundaries
arm64: Drop outdated links in comments
arm64: perf: Don't register user access sysctl handler multiple times
drivers: perf: marvell_cn10k: fix an IS_ERR() vs NULL check
perf/smmuv3: Fix unused variable warning when CONFIG_OF=n
arm64: errata: Fix exec handling in erratum 1418040 workaround
arm64: Unhash early pointer print plus improve comment
asm-generic: introduce io_stop_wc() and add implementation for ARM64
arm64: Ensure that the 'bti' macro is defined where linkage.h is included
arm64: remove __dma_*_area() aliases
docs/arm64: delete a space from tagged-address-abi
arm64: Enable KCSAN
kselftest/arm64: Add pidbench for floating point syscall cases
arm64/fp: Add comments documenting the usage of state restore functions
kselftest/arm64: Add a test program to exercise the syscall ABI
kselftest/arm64: Allow signal tests to trigger from a function
kselftest/arm64: Parameterise ptrace vector length information
arm64/sve: Minor clarification of ABI documentation
arm64/sve: Generalise vector length configuration prctl() for SME
arm64/sve: Make sysctl interface for SVE reusable by SME
...
The type of the function i40iw_remove is void. So remove
the unnecessary return.
Link: https://lore.kernel.org/r/20220110073733.3221379-1-yanjun.zhu@linux.dev
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
A few minor cleanups for cross-architecture code: Alexandre Ghiti
deals with removing some leftovers from drivers and features that
have been removed, and Wasin Thonkaew has a cosmetic change.
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Merge tag 'asm-generic-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic cleanups from Arnd Bergmann:
"A few minor cleanups for cross-architecture code: Alexandre Ghiti
deals with removing some leftovers from drivers and features that have
been removed, and Wasin Thonkaew has a cosmetic change"
* tag 'asm-generic-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
asm-generic/error-injection.h: fix a spelling mistake, and a coding style issue
arch: Remove leftovers from prism54 wireless driver
arch: Remove leftovers from mandatory file locking
Documentation, arch: Remove leftovers from CIFS_WEAK_PW_HASH
Documentation, arch: Remove leftovers from raw device
This adds support for the StarFive JH7100, including the necessary
device drivers and DT files for the BeagleV Starlight prototype
board, with additional boards to be added later. This SoC promises
to be the first usable low-cost platform for RISC-V.
I've taken this through the SoC tree in the anticipation of adding
a few other Arm based SoCs as well, but those did not pass the
review in time, so it's only this one.
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Merge tag 'newsoc-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull RISC-V SoC updates from Arnd Bergmann:
"Add support for StarFive JH7100 RISC-V SoC
This adds support for the StarFive JH7100, including the necessary
device drivers and DT files for the BeagleV Starlight prototype board,
with additional boards to be added later. This SoC promises to be the
first usable low-cost platform for RISC-V.
I've taken this through the SoC tree in the anticipation of adding a
few other Arm based SoCs as well, but those did not pass the review in
time, so it's only this one"
* tag 'newsoc-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
reset: starfive-jh7100: Fix 32bit compilation
RISC-V: Add BeagleV Starlight Beta device tree
RISC-V: Add initial StarFive JH7100 device tree
serial: 8250_dw: Add StarFive JH7100 quirk
dt-bindings: serial: snps-dw-apb-uart: Add JH7100 uarts
pinctrl: starfive: Add pinctrl driver for StarFive SoCs
dt-bindings: pinctrl: Add StarFive JH7100 bindings
dt-bindings: pinctrl: Add StarFive pinctrl definitions
reset: starfive-jh7100: Add StarFive JH7100 reset driver
dt-bindings: reset: Add Starfive JH7100 reset bindings
dt-bindings: reset: Add StarFive JH7100 reset definitions
clk: starfive: Add JH7100 clock generator driver
dt-bindings: clock: starfive: Add JH7100 bindings
dt-bindings: clock: starfive: Add JH7100 clock definitions
dt-bindings: interrupt-controller: Add StarFive JH7100 plic
dt-bindings: timer: Add StarFive JH7100 clint
RISC-V: Add StarFive SoC Kconfig option
As usual, this is the bulk of the updates for the SoC tree, adding
more devices to existing files, addressing issues from ever improving
automated checking, and fixing minor issues.
The most interesting bits as usual are the new platforms.
All the newly supported SoCs belong into existing families
this time:
- Qualcomm gets support for two newly announced platforms, both
of which can now work in production environments: the SDX65
5G modem that can run a minimal Linux on its Cortex-A7 core,
and the Snapdragon 8 Gen 1, their latest high-end phone SoC.
- Renesas adds support for R-Car S4-8, the most recent automotive
Server/Communication SoC.
- TI adds support for J721s2, a new automotive SoC in the K3
family.
- Mediatek MT7986a/b is a SoC used in Wifi routers, the latest
generation following their popular MT76xx series. Only basic
support is added for now.
- NXP i.MX8 ULP8 is a new low-power variant of the widespread
i.MX8 series.
- TI SPEAr320s is a minor variant of the old SPEAr320 SoC that
we have supported for a long time.
New boards with the existing SoCs include
- Aspeed AST2500/AST2600 BMCs in TYAN, Facebook and Yadro servers
- AT91/SAMA5 based evaluation board
- NXP gains twenty new development and industrial boards for their
i.MX and Layerscape SoCs
- Intel IXP4xx now supports the final two machines in device tree
that were previously only supported in old style board files.
- Mediatek MT6589 is used in the Fairphone FP1 phone from 2013,
while MT8183 is used in the Acer Chromebook 314.
- Qualcomm gains support for the reference machines using the two
new SoCs, plus a number of Chromebook variants and phones based
on the Snapdragon 7c, 845 and 888 SoCs, including various
Sony Xperia devices and the Microsoft Surface Duo 2.
- ST STM32 now supports the Engicam i.Core STM32MP1 carrier board.
- Tegra now boots various older Android devices based on 32-bit
chips out of the box, including a number of ASUS Transformer
tablets.
There is also a new Jetson AGX Orin developer kit.
- Apple support adds the missing device trees for all the remaining
M1 Macbook and iMac variants, though not yet the M1 Pro/Max
versions.
- Allwinner now supports another version of the Tanix TX6 set-top
box based on the H6 SoC.
- Broadcom gains support for the Netgear RAXE500 Wireless router
based on BCM4908.
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Merge tag 'dt-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC devicetree updates from Arnd Bergmann:
"As usual, this is the bulk of the updates for the SoC tree, adding
more devices to existing files, addressing issues from ever improving
automated checking, and fixing minor issues.
The most interesting bits as usual are the new platforms. All the
newly supported SoCs belong into existing families this time:
- Qualcomm gets support for two newly announced platforms, both of
which can now work in production environments: the SDX65 5G modem
that can run a minimal Linux on its Cortex-A7 core, and the
Snapdragon 8 Gen 1, their latest high-end phone SoC.
- Renesas adds support for R-Car S4-8, the most recent automotive
Server/Communication SoC.
- TI adds support for J721s2, a new automotive SoC in the K3 family.
- Mediatek MT7986a/b is a SoC used in Wifi routers, the latest
generation following their popular MT76xx series. Only basic
support is added for now.
- NXP i.MX8 ULP8 is a new low-power variant of the widespread i.MX8
series.
- TI SPEAr320s is a minor variant of the old SPEAr320 SoC that we
have supported for a long time.
New boards with the existing SoCs include
- Aspeed AST2500/AST2600 BMCs in TYAN, Facebook and Yadro servers
- AT91/SAMA5 based evaluation board
- NXP gains twenty new development and industrial boards for their
i.MX and Layerscape SoCs
- Intel IXP4xx now supports the final two machines in device tree
that were previously only supported in old style board files.
- Mediatek MT6589 is used in the Fairphone FP1 phone from 2013, while
MT8183 is used in the Acer Chromebook 314.
- Qualcomm gains support for the reference machines using the two new
SoCs, plus a number of Chromebook variants and phones based on the
Snapdragon 7c, 845 and 888 SoCs, including various Sony Xperia
devices and the Microsoft Surface Duo 2.
- ST STM32 now supports the Engicam i.Core STM32MP1 carrier board.
- Tegra now boots various older Android devices based on 32-bit chips
out of the box, including a number of ASUS Transformer tablets.
There is also a new Jetson AGX Orin developer kit.
- Apple support adds the missing device trees for all the remaining
M1 Macbook and iMac variants, though not yet the M1 Pro/Max
versions.
- Allwinner now supports another version of the Tanix TX6 set-top box
based on the H6 SoC.
- Broadcom gains support for the Netgear RAXE500 Wireless router
based on BCM4908"
* tag 'dt-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (574 commits)
Revert "ARM: dts: BCM5301X: define RTL8365MB switch on Asus RT-AC88U"
arm64: dts: qcom: sm6125: Avoid using missing SM6125_VDDCX
arm64: dts: qcom: sm8450-qrd: Enable USB nodes
arm64: dts: qcom: sm8450: Add usb nodes
ARM: dts: aspeed: add LCLK setting into LPC KCS nodes
dt-bindings: ipmi: bt-bmc: add 'clocks' as a required property
ARM: dts: aspeed: add LCLK setting into LPC IBT node
ARM: dts: aspeed: p10: Add TPM device
ARM: dts: aspeed: p10: Enable USB host ports
ARM: dts: aspeed: Add TYAN S8036 BMC machine
ARM: dts: aspeed: tyan-s7106: Add uart_routing and fix vuart config
ARM: dts: aspeed: Adding Facebook Bletchley BMC
ARM: dts: aspeed: g220a: Enable secondary flash
ARM: dts: Add openbmc-flash-layout-64-alt.dtsi
ARM: dts: aspeed: Add secure boot controller node
dt-bindings: aspeed: Add Secure Boot Controller bindings
ARM: dts: Remove "spidev" nodes
dt-bindings: pinctrl: samsung: Add pin drive definitions for Exynos850
dt-bindings: arm: samsung: Document E850-96 board binding
dt-bindings: Add vendor prefix for WinLink
...
Merge ACPI tables parsing code update, NUMA-related ACPI update, CPPC
documentation update, ACPI sysfs attributes handling update and ACPI
thermal and battery drivers updates for 5.17-rc1:
- Add AEST to the list of known ACPI table signatures (Shuuichirou
Ishii).
- Make ACPI NUMA code take hotpluggable memblocks into account when
CONFIG_MEMORY_HOTPLUG is not set (Vitaly Kuznetsov).
- Use default_groups in kobj_type in the ACPI sysfs code (Greg
Kroah-Hartman).
- Rearrange _CPC structure documentation (Andy Shevchenko).
- Drop an always true check from the ACPI thermal driver (Adam
Borowski).
- Add new "not charging" quirk for Lenovo ThinkPads to the ACPI
battery driver (Thomas Weißschuh).
* acpi-tables:
ACPI: tables: Add AEST to the list of known table signatures
* acpi-numa:
ACPI: NUMA: Process hotpluggable memblocks when !CONFIG_MEMORY_HOTPLUG
* acpi-sysfs:
ACPI: sysfs: use default_groups in kobj_type
* acpi-cppc:
ACPI: CPPC: Amend documentation in the comments
* acpi-thermal:
ACPI: thermal: drop an always true check
* acpi-battery:
ACPI: battery: Add the ThinkPad "Not Charging" quirk
There are cleanups and minor bugfixes across several SoC specific
drivers, for Qualcomm, Samsung, NXP i.MX, AT91, Tegra, Keystone,
Renesas, ZynqMP
Noteworthy new features are:
- The op-tee firmware driver gains support for asynchronous
notifications from secure-world firmware.
- Qualcomm platforms gain support for new SoC types in various
drivers: power domain, cache controller, RPM sleep, soc-info
- Samsung SoC drivers gain support for new SoCs in ChipID and PMU,
as well as a new USIv2 driver that handles various types of
serial communiction (uart, i2c, spi)
- Renesas adds support for R-Car S4-8 (R8A779F0) in multiple
drivers, as well as memory controller support for RZ/G2L
(R9A07G044).
- Apple M1 gains support for the PMGR power management driver
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Merge tag 'drivers-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC driver updates from Arnd Bergmann:
"There are cleanups and minor bugfixes across several SoC specific
drivers, for Qualcomm, Samsung, NXP i.MX, AT91, Tegra, Keystone,
Renesas, ZynqMP
Noteworthy new features are:
- The op-tee firmware driver gains support for asynchronous
notifications from secure-world firmware.
- Qualcomm platforms gain support for new SoC types in various
drivers: power domain, cache controller, RPM sleep, soc-info
- Samsung SoC drivers gain support for new SoCs in ChipID and PMU, as
well as a new USIv2 driver that handles various types of serial
communiction (uart, i2c, spi)
- Renesas adds support for R-Car S4-8 (R8A779F0) in multiple drivers,
as well as memory controller support for RZ/G2L (R9A07G044).
- Apple M1 gains support for the PMGR power management driver"
* tag 'drivers-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (94 commits)
soc: qcom: rpmh-rsc: Fix typo in a comment
soc: qcom: socinfo: Add SM6350 and SM7225
dt-bindings: arm: msm: Don't mark LLCC interrupt as required
dt-bindings: firmware: scm: Add SM6350 compatible
dt-bindings: arm: msm: Add LLCC for SM6350
soc: qcom: rpmhpd: Sort power-domain definitions and lists
soc: qcom: rpmhpd: Remove mx/cx relationship on sc7280
soc: qcom: rpmhpd: Rename rpmhpd struct names
soc: qcom: rpmhpd: sm8450: Add the missing .peer for sm8450_cx_ao
soc: qcom: socinfo: add SM8450 ID
soc: qcom: rpmhpd: Add SM8450 power domains
dt-bindings: power: rpmpd: Add SM8450 to rpmpd binding
soc: qcom: smem: Update max processor count
dt-bindings: arm: qcom: Document SM8450 SoC and boards
dt-bindings: firmware: scm: Add SM8450 compatible
dt-bindings: arm: cpus: Add kryo780 compatible
soc: qcom: rpmpd: Add support for sm6125
dt-bindings: qcom-rpmpd: Add sm6125 power domains
soc: qcom: aoss: constify static struct thermal_cooling_device_ops
PM: AVS: qcom-cpr: Use div64_ul instead of do_div
...
These are the usual changes to enable newly added driver
by default, and to do some housekeeping around changing
Kconfig symbols.
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Merge tag 'defconfig-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM defconfig updates from Arnd Bergmann:
"These are the usual changes to enable newly added driver by default,
and to do some housekeeping around changing Kconfig symbols"
* tag 'defconfig-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
arm64: defconfig: Enable Samsung I2C driver
ARM: configs: at91: Enable crypto software implementations
ARM: configs: at91: sama7: Enable SPI NOR and QSPI controller
ARM: config: multi v7: Enable NVIDIA Tegra20 APB DMA driver
ARM: config: multi v7: Enable NVIDIA Tegra20 S/PDIF driver
ARM: tegra_defconfig: Enable S/PDIF driver
ARM: imx_v6_v7_defconfig: Enable for DHCOM devices required RTC_DRV_RV3029C2
ARM: config: multi v7: Enable display drivers used by Tegra devices
ARM: tegra_defconfig: Enable drivers wanted by Acer Chromebooks and ASUS tablets
ARM: configs: gemini: Activate crypto driver
arm64: defconfig: enable drivers for booting i.MX8ULP
arm64: defconfig: Enable R-Car S4-8
arm64: defconfig: enable drivers for TQ TQMa8MxML-MBa8Mx
arm64: defconfig: Enable OV5640
arm64: defconfig: Enable VIDEO_IMX_MEDIA
These are all minor bug fixes and cleanups to code in arch/arm and
arch/arm64 that is specific to one SoC, updating Kconfig symbols,
the MAINTAINERS file, and removing some dead code.
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Merge tag 'soc-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC updates from Arnd Bergmann:
"These are all minor bug fixes and cleanups to code in arch/arm and
arch/arm64 that is specific to one SoC, updating Kconfig symbols, the
MAINTAINERS file, and removing some dead code"
* tag 'soc-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
arm64: exynos: Enable Exynos Multi-Core Timer driver
ARM: ixp4xx: remove unused header file pata_ixp4xx_cf.h
ARM: ixp4xx: remove dead configs CPU_IXP43X and CPU_IXP46X
MAINTAINERS: Add Florian as BCM5301X and BCM53573 maintainer
ARM: samsung: Remove HAVE_S3C2410_I2C and use direct dependencies
ARM: imx: rename DEBUG_IMX21_IMX27_UART to DEBUG_IMX27_UART
ARM: imx: remove dead left-over from i.MX{27,31,35} removal
ARM: s3c: add one more "fallthrough" statement in Jive
ARM: s3c: include header for prototype of s3c2410_modify_misccr
ARM: shmobile: rcar-gen2: Add missing of_node_put()
The event_command.parse() callback is responsible for parsing and
registering triggers. The existing command implementions for this
callback duplicate a lot of the same code, so to clean up and
consolidate those implementations, introduce a handful of helper
functions for implementors to use.
This also makes it easier for new commands to be implemented and
allows them to focus more on the customizations they provide rather
than obscuring and complicating it with boilerplate code.
Link: https://lkml.kernel.org/r/c1ff71f594d45177706571132bd3119491097221.1641823001.git.zanussi@kernel.org
Signed-off-by: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
The name of the func() callback on event_trigger_ops is too generic
and is easily confused with other callbacks with that name, so change
it to something that reflects its actual purpose.
In this case, the main purpose of the callback is to implement an
event trigger, so call it trigger() instead.
Also add some more documentation to event_trigger_ops describing the
callbacks a bit better.
Link: https://lkml.kernel.org/r/36ab812e3ee74ee03ae0043fda41a858ee728c00.1641823001.git.zanussi@kernel.org
Signed-off-by: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
The name of the func() callback on event_command is too generic and is
easily confused with other callbacks with that name, so change it to
something that reflects its actual purpose.
In this case, the main purpose of the callback is to parse an event
command, so call it parse() instead.
Link: https://lkml.kernel.org/r/7784e321840752ed88aac0b349c0c685fc9247b1.1641823001.git.zanussi@kernel.org
Signed-off-by: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Merge x86-specific ACPI updates, PMIC driver ACPI updates and a DPTF
driver update for 5.17-rc1:
- Rework the handling of device enumeration quirks in the x86-specific
code and add new quirks for known-broken platforms (Hans de Goede).
- Fix the handling of defective LPAT in the ACPI xpower PMIC driver
and clean up some definitions of PMIC data structures (Hans de
Goede).
- Fix outdated comment in the ACPI DPTF driver (Sumeet Pawnikar).
* acpi-x86:
ACPI / x86: Skip AC and battery devices on x86 Android tablets with broken DSDTs
ACPI / x86: Introduce an acpi_quirk_skip_acpi_ac_and_battery() helper
mmc: sdhci-acpi: Use the new soc_intel_is_byt() helper
mmc: sdhci-acpi: Remove special handling for GPD win/pocket devices
ACPI / x86: Add PWM2 on the Xiaomi Mi Pad 2 to the always_present list
ACPI / x86: Add not-present quirk for the PCI0.SDHB.BRC1 device on the GPD win
ACPI / x86: Allow specifying acpi_device_override_status() quirks by path
ACPI: Change acpi_device_always_present() into acpi_device_override_status()
ACPI / x86: Drop PWM2 device on Lenovo Yoga Book from always present table
* acpi-pmic:
ACPI: PMIC: xpower: Fix _TMP ACPI errors
ACPI: PMIC: allow drivers to provide a custom lpat_raw_to_temp() function
ACPI: PMIC: constify all struct intel_pmic_opregion_data declarations
* acpi-dptf:
ACPI: DPTF: Update device ID in a comment
Since it is possible for ioremap() to fail, 'data->MmioAddress' could be
NULL. Skip entry if ioremap() fails.
Link: https://lore.kernel.org/r/20211230021137.1823352-1-jiasheng@iscas.ac.cn
Fixes: 0e6f9d2708 ("pcmcia: use pcmcia_loop_config in scsi pcmcia drivers")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Merge ACPI EC driver updates and ACPI processor driver updates for
5.17-rc1:
- Rework flushing of EC work while suspended to idle and clean up
the handling of events in the ACPI EC driver (Rafael Wysocki).
- Prohibit ec_sys module parameter write_support from being used
when the system is locked down (Hans de Goede).
- Make the ACPI processor thermal driver use cpufreq_cpu_get() to
check for presence of cpufreq policy (Manfred Spraul).
- Avoid unnecessary CPU cache flushing in the ACPI processor idle
driver (Kirill A. Shutemov).
- Replace kernel.h with the necessary inclusions in the ACPI
processor driver (Andy Shevchenko).
- Use swap() instead of open coding it in the ACPI processor idle
driver (Guo Zhengkui).
* acpi-ec:
ACPI: EC: Mark the ec_sys write_support param as module_param_hw()
ACPI: EC: Relocate acpi_ec_create_query() and drop acpi_ec_delete_query()
ACPI: EC: Make the event work state machine visible
ACPI: EC: Avoid queuing unnecessary work in acpi_ec_submit_event()
ACPI: EC: Rename three functions
ACPI: EC: Simplify locking in acpi_ec_event_handler()
ACPI: EC: Rearrange the loop in acpi_ec_event_handler()
ACPI: EC: Fold acpi_ec_check_event() into acpi_ec_event_handler()
ACPI: EC: Pass one argument to acpi_ec_query()
ACPI: EC: Call advance_transaction() from acpi_ec_dispatch_gpe()
ACPI: EC: Rework flushing of EC work while suspended to idle
* acpi-processor:
ACPI: processor: thermal: avoid cpufreq_get_policy()
ACPI: processor: idle: Only flush cache on entering C3
ACPI: processor idle: Use swap() instead of open coding it
ACPI: processor: Replace kernel.h with the necessary inclusions
Avoid potentially hazardous memory copying and the needless use of
"%pIS" -- in the kernel, an RPC service listener is always bound to
ANYADDR. Having the network namespace is helpful when recording
errors, though.
Fixes: a0469f46fa ("SUNRPC: Replace dprintk call sites in TCP state change callouts")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
While testing, I got an unexpected KASAN splat:
Jan 08 13:50:27 oracle-102.nfsv4.dev kernel: BUG: KASAN: stack-out-of-bounds in trace_event_raw_event_svc_xprt_create_err+0x190/0x210 [sunrpc]
Jan 08 13:50:27 oracle-102.nfsv4.dev kernel: Read of size 28 at addr ffffc9000008f728 by task mount.nfs/4628
The memcpy() in the TP_fast_assign section of this trace point
copies the size of the destination buffer in order that the buffer
won't be overrun.
In other similar trace points, the source buffer for this memcpy is
a "struct sockaddr_storage" so the actual length of the source
buffer is always long enough to prevent the memcpy from reading
uninitialized or unallocated memory.
However, for this trace point, the source buffer can be as small as
a "struct sockaddr_in". For AF_INET sockaddrs, the memcpy() reads
memory that follows the source buffer, which is not always valid
memory.
To avoid copying past the end of the passed-in sockaddr, make the
source address's length available to the memcpy(). It would be a
little nicer if the tracing infrastructure was more friendly about
storing socket addresses that are not AF_INET, but I could not find
a way to make printk("%pIS") work with a dynamic array.
Reported-by: KASAN
Fixes: 4b8f380e46 ("SUNRPC: Tracepoint to record errors in svc_xpo_create()")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
The function regulator_get() returns an error pointer. Use IS_ERR() to
validate the return value.
Link: https://lore.kernel.org/r/20211222070930.9449-1-linmq006@gmail.com
Fixes: cf137b3ea4 ("scsi: ufs-mediatek: Support VA09 regulator operations")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Merge ACPI device enumeration updates, ACPI power management updates
and PCI host bridge ACPI driver updates for 5.17-rc1:
- Introduce acpi_fetch_acpi_dev() as a replacement for
acpi_bus_get_device() and use it in the ACPI subsystem (Rafael
Wysocki).
- Avoid using _CID for device enumaration if _HID is missing or
invalid (Rafael Wysocki).
- Rework quirk handling during ACPI device enumeration and add some
new quirks for known broken platforms (Hans de Goede).
- Avoid unnecessary or redundant CPU cache flushing during system
PM transitions (Kirill A. Shutemov).
- Add PM debug messages related to power resources (Rafael Wysocki).
- Fix kernel-doc comment in the PCI host bridge ACPI driver (Yang Li).
* acpi-scan:
serdev: Do not instantiate serdevs on boards with known bogus DSDT entries
i2c: acpi: Do not instantiate I2C-clients on boards with known bogus DSDT entries
ACPI / x86: Add acpi_quirk_skip_[i2c_client|serdev]_enumeration() helpers
ACPI: scan: Create platform device for BCM4752 and LNV4752 ACPI nodes
ACPI: Use acpi_fetch_acpi_dev() instead of acpi_bus_get_device()
ACPI: scan: Introduce acpi_fetch_acpi_dev()
ACPI: scan: Do not add device IDs from _CID if _HID is not valid
* acpi-pm:
ACPI: PM: Remove redundant cache flushing
ACPI: PM: Avoid CPU cache flush when entering S4
* acpi-power:
ACPI: PM: Emit debug messages when enabling/disabling wakeup power
* acpi-pci:
PCI/ACPI: Fix acpi_pci_osc_control_set() kernel-doc comment
The Tactive time determines the waiting time before burst at hibern8 exit
and is determined by hardware at linkup time. However, in the case of
Samsung devices, increase host's Tactive time +100us for stability. If the
HCI's Tactive time is equal or greater than the device, +100us should be
set.
Link: https://lore.kernel.org/r/20220106213924.186263-1-hy50.seo@samsung.com
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Acked-by: Avri Altman <Avri.Altman@wdc.com>
Signed-off-by: SEO HOYOUNG <hy50.seo@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
As stated in [1], dma_set_mask() with a 64-bit mask never fails if
dev->dma_mask is non-NULL. So, if it fails, the 32 bits case will also
fail for the same reason.
Simplify code and remove some dead code accordingly.
While at it, return the error code returned by dma_set_mask_and_coherent()
instead of -1.
[1]: https://lkml.org/lkml/2021/6/7/398
Link: https://lore.kernel.org/r/958bcb2a6e86344c14f38369e8e7079615a2b0e3.1641754613.git.christophe.jaillet@wanadoo.fr
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The "data_info" struct is copied to the user. It has a 4 byte struct
hole after the last struct member so we need to memset that to avoid
copying uninitialized stack data to the user.
Fixes: b0013e037a ("ACPI: Introduce Platform Firmware Runtime Telemetry driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
In [1], Christoph Hellwig has proposed to remove the wrappers in
include/linux/pci-dma-compat.h.
Some reasons why this API should be removed have been given by Julia
Lawall in [2].
When memory is allocated in kbuf_alloc_2_sgl() GFP_KERNEL can be used
because this function already uses the GFP_USER flag for some memory
allocation and not spin_lock is taken in the between.
When memory is allocated in mptctl_do_mpt_command() GFP_KERNEL can be used
because this function already uses copy_from_user() and this function can
sleep.
When memory is allocated in mptctl_hp_hostinfo() GFP_KERNEL can be used
because this function already uses mpt_config() and this function has an
explicit might_sleep().
When memory is allocated in mptctl_hp_targetinfo() GFP_KERNEL can be used
because this function already uses mpt_config() and this function has an
explicit might_sleep().
[1]: https://lore.kernel.org/kernel-janitors/20200421081257.GA131897@infradead.org/
[2]: https://lore.kernel.org/kernel-janitors/alpine.DEB.2.22.394.2007120902170.2424@hadrien/
Link: https://lore.kernel.org/r/516375d6d06114484533baf03aae351306100246.1641500561.git.christophe.jaillet@wanadoo.fr
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Make digital tuning store the bandwidth in Hz in the private dev struct,
rather than the hardware-specific bandwidth property code, so that the
get_bandwidth() function returns the bandwidth in Hz, just as it already
does when using analog tuning.
Link: https://lore.kernel.org/linux-media/trinity-931c0e68-88af-46cc-91a1-986754798a4f-1641509499366@3c-app-gmx-bap68
Reported-by: Robert Schlabbach <robert_s@gmx.net>
Signed-off-by: Robert Schlabbach <robert_s@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Commit 98c65a3dac ("media: si2157: add support for 1.7MHz and 6.1
MHz") introduced two bugs: The 6.1MHz setting was always used for any
bandwidth less than 7MHz due to missing "else" keywords, and then the
setting was not specified as decimal 10, but as hexadecimal 0x10, which
makes the tuner refuse the tune command. In sum, it is not possible to
tune to any channels of less than 7MHz bandwidth anymore.
Add the missing "else" keywords and convert all bandwidth settings to
decimal to avoid any future decimal vs. hexadecimal confusion.
Remove the use of the undefined bandwidth setting 0x0f for bandwidths
greater than 8MHz, which is also refused by the tune command, in favour
of using the default bandwidth setting 8 for any bandwidths greater than
7MHz.
Link: https://lore.kernel.org/linux-media/trinity-d0015ea1-1da5-4c7d-a75b-781fb26dc339-1641509387112@3c-app-gmx-bap68
Fixes: 98c65a3dac ("media: si2157: add support for 1.7MHz and 6.1 MHz")
Reported-by: Robert Schlabbach <robert_s@gmx.net>
Signed-off-by: Robert Schlabbach <robert_s@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
When CONFIG_VIDEO_ATOMISP_ISP2401 is disabled, clang warns:
./drivers/staging/media/atomisp//pci/isp2400_input_system_local.h:32:40:
error: redefinition of typedef 'input_system_cfg2400_t' is a C11 feature
[-Werror,-Wtypedef-redefinition]
typedef struct input_system_cfg2400_s input_system_cfg2400_t;
^
./drivers/staging/media/atomisp//pci/input_system_local.h:22:40: note:
previous definition is here
typedef struct input_system_cfg2400_s input_system_cfg2400_t;
^
1 error generated.
input_system_cfg2400_t's typedef was copied from
isp2400_input_system_local.h to input_system_local.h, rather than moved.
Remove the one in isp2400_input_system_local.h so that there is no more
warning, which can break the build under -Werror.
Link: https://github.com/ClangBuiltLinux/linux/issues/1557
Link: https://lore.kernel.org/linux-media/20211227164243.2329724-1-nathan@kernel.org
Fixes: 4005ecee61 ("media: atomisp: shift some structs from input_system_local")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Purging can happen during swapping out, or directly invoked with the
madvise ioctl. In such cases this doesn't involve a ttm move, which
skips umapping the object.
v2(Thomas):
- add ttm_truncate helper, and just call into i915_ttm_move_notify() to
handle the unmapping step
Fixes: 213d509277 ("drm/i915/ttm: Introduce a TTM i915 gem object backend")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220106174910.280616-4-matthew.auld@intel.com
(cherry picked from commit ab4911b7d4)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Ensure we call ttm_bo_unmap_virtual when releasing the pages.
Importantly this should now handle the ttm swapping case, and all other
places that already call into i915_ttm_move_notify().
v2: fix up the selftest
Fixes: cf3e3e86d7 ("drm/i915: Use ttm mmap handling for ttm bo's.")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220106174910.280616-3-matthew.auld@intel.com
(cherry picked from commit 903e038727)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Don't attempt to fault and re-populate purged objects. By some fluke
this passes the dontneed-after-mmap IGT, but for the wrong reasons.
Fixes: cf3e3e86d7 ("drm/i915: Use ttm mmap handling for ttm bo's.")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220106174910.280616-2-matthew.auld@intel.com
(cherry picked from commit f3cb4a2de5)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
A few more updates for v5.17, nothing hugely stand out in the few days
since the initial pull request was sent.
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Merge tag 'asoc-v5.17-2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v5.17
A few more updates for v5.17, nothing hugely stand out in the few days
since the initial pull request was sent.
Pull clocksource watchdog updates from Paul McKenney:
- Avoid accidental unstable marking of clocksources by rejecting
clocksource measurements where the source of the skew is the delay
reading reference clocksource itself. This change avoids many of the
current false positives caused by epic cache-thrashing workloads.
- Reduce the default clocksource_watchdog() retries to 2, thus offsetting
the increased overhead due to #1 above rereading the reference
clocksource.
Link: https://lore.kernel.org/lkml/20220105001723.GA536708@paulmck-ThinkPad-P17-Gen-1
- Fix GICv3 redistributor table reservation with RT across kexec
- Fix GICv4.1 redistributor view of the VPE table across kexec
- Add support for extra interrupts on spear-shirq
- Make obtaining some interrupts optional for the Renesas drivers
- Various cleanups and bug fixes
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Merge tag 'irqchip-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip updates from Marc Zyngier:
- Fix GICv3 redistributor table reservation with RT across kexec
- Fix GICv4.1 redistributor view of the VPE table across kexec
- Add support for extra interrupts on spear-shirq
- Make obtaining some interrupts optional for the Renesas drivers
- Various cleanups and bug fixes
Link: https://lore.kernel.org/lkml/20220108130807.4109738-1-maz@kernel.org
functional changes (Marek Szyprowski)
- Add imx8ulp compatible string for NPX TPM driver (Jacky Bai)
- Fix comma introduced by error by replacing it by the initial
semicolon on the Exynos_mct (Will Deacon)
- Add OSTM driver support on Renesas. The reset line must be
deasserted before accessing the registers. This change depends on an
external change resulting in a shared immutable branch
'reset/of-get-optional-exclusive' from
git://git.pengutronix.de/pza/linux (Biju Das)
- Make the OSTM Kconfig option visible to user in order to let him
disable it when ARM architected timers is enabled (Biju Das)
- Tag two variables on iMX sysctr _ro_afterinit (Peng Fan)
- Set the cpumask to cpu_possible_mask in order to have full benefit
of the DYNIRQ flag on iMX sysctr (Peng Fan)
- Tag __maybe_unused a variable in the Pistachio timer driver in order
to fix a warning reported by the kernel test robot (Drew Fustini)
- Add MStar MSC313e timer support and the ssd20xd-based variant, as
well as the DT bindings (Romain Perier)
- Remove the incompatible compatible string for the rk3066 (Johan
Jonker)
- Fix dts_check warnings on the cadence ttc driver by adding the power
domain bindings (Michal Simek)
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Merge tag 'timers-v5.17-rc1' of https://git.linaro.org/people/daniel.lezcano/linux into timers/core
Pull clocksource/events updates from Daniel Lezcano:
- Refactor resource allocation on the Exynos_mct driver without
functional changes (Marek Szyprowski)
- Add imx8ulp compatible string for NPX TPM driver (Jacky Bai)
- Fix comma introduced by error by replacing it by the initial
semicolon on the Exynos_mct (Will Deacon)
- Add OSTM driver support on Renesas. The reset line must be
deasserted before accessing the registers. This change depends on an
external change resulting in a shared immutable branch
'reset/of-get-optional-exclusive' from
git://git.pengutronix.de/pza/linux (Biju Das)
- Make the OSTM Kconfig option visible to user in order to let him
disable it when ARM architected timers is enabled (Biju Das)
- Tag two variables on iMX sysctr _ro_afterinit (Peng Fan)
- Set the cpumask to cpu_possible_mask in order to have full benefit
of the DYNIRQ flag on iMX sysctr (Peng Fan)
- Tag __maybe_unused a variable in the Pistachio timer driver in order
to fix a warning reported by the kernel test robot (Drew Fustini)
- Add MStar MSC313e timer support and the ssd20xd-based variant, as
well as the DT bindings (Romain Perier)
- Remove the incompatible compatible string for the rk3066 (Johan
Jonker)
- Fix dts_check warnings on the cadence ttc driver by adding the power
domain bindings (Michal Simek)
Link: https://lore.kernel.org/lkml/e093c706-c98d-29ee-0102-78b6d41c6164@linaro.org
Fix possible memory leak in error path of storvsc_queuecommand() when
DMA mapping fails.
Signed-off-by: Juan Vazquez <juvazq@linux.microsoft.com>
Reviewed-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Link: https://lore.kernel.org/r/20220109001758.6401-1-juvazq@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Change the nfs filesystem to support fscache's indexing rewrite and
reenable caching in nfs.
The following changes have been made:
(1) The fscache_netfs struct is no more, and there's no need to register
the filesystem as a whole.
(2) The session cookie is now an fscache_volume cookie, allocated with
fscache_acquire_volume(). That takes three parameters: a string
representing the "volume" in the index, a string naming the cache to
use (or NULL) and a u64 that conveys coherency metadata for the
volume.
For nfs, I've made it render the volume name string as:
"nfs,<ver>,<family>,<address>,<port>,<fsidH>,<fsidL>*<,param>[,<uniq>]"
(3) The fscache_cookie_def is no more and needed information is passed
directly to fscache_acquire_cookie(). The cache no longer calls back
into the filesystem, but rather metadata changes are indicated at
other times.
fscache_acquire_cookie() is passed the same keying and coherency
information as before.
(4) fscache_enable/disable_cookie() have been removed.
Call fscache_use_cookie() and fscache_unuse_cookie() when a file is
opened or closed to prevent a cache file from being culled and to keep
resources to hand that are needed to do I/O.
If a file is opened for writing, we invalidate it with
FSCACHE_INVAL_DIO_WRITE in lieu of doing writeback to the cache,
thereby making it cease caching until all currently open files are
closed. This should give the same behaviour as the uptream code.
Making the cache store local modifications isn't straightforward for
NFS, so that's left for future patches.
(5) fscache_invalidate() now needs to be given uptodate auxiliary data and
a file size. It also takes a flag to indicate if this was due to a
DIO write.
(6) Call nfs_fscache_invalidate() with FSCACHE_INVAL_DIO_WRITE on a file
to which a DIO write is made.
(7) Call fscache_note_page_release() from nfs_release_page().
(8) Use a killable wait in nfs_vm_page_mkwrite() when waiting for
PG_fscache to be cleared.
(9) The functions to read and write data to/from the cache are stubbed out
pending a conversion to use netfslib.
Changes
=======
ver #3:
- Added missing =n fallback for nfs_fscache_release_file()[1][2].
ver #2:
- Use gfpflags_allow_blocking() rather than using flag directly.
- fscache_acquire_volume() now returns errors.
- Remove NFS_INO_FSCACHE as it's no longer used.
- Need to unuse a cookie on file-release, not inode-clear.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Co-developed-by: David Howells <dhowells@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Dave Wysochanski <dwysocha@redhat.com>
Acked-by: Jeff Layton <jlayton@kernel.org>
cc: Trond Myklebust <trond.myklebust@hammerspace.com>
cc: Anna Schumaker <anna.schumaker@netapp.com>
cc: linux-nfs@vger.kernel.org
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/202112100804.nksO8K4u-lkp@intel.com/ [1]
Link: https://lore.kernel.org/r/202112100957.2oEDT20W-lkp@intel.com/ [2]
Link: https://lore.kernel.org/r/163819668938.215744.14448852181937731615.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/163906979003.143852.2601189243864854724.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163967182112.1823006.7791504655391213379.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/164021575950.640689.12069642327533368467.stgit@warthog.procyon.org.uk/ # v4
Change the 9p filesystem to take account of the changes to fscache's
indexing rewrite and reenable caching in 9p.
The following changes have been made:
(1) The fscache_netfs struct is no more, and there's no need to register
the filesystem as a whole.
(2) The session cookie is now an fscache_volume cookie, allocated with
fscache_acquire_volume(). That takes three parameters: a string
representing the "volume" in the index, a string naming the cache to
use (or NULL) and a u64 that conveys coherency metadata for the
volume.
For 9p, I've made it render the volume name string as:
"9p,<devname>,<cachetag>"
where the cachetag is replaced by the aname if it wasn't supplied.
This probably needs rethinking a bit as the aname can have slashes in
it. It might be better to hash the cachetag and use the hash or I
could substitute commas for the slashes or something.
(3) The fscache_cookie_def is no more and needed information is passed
directly to fscache_acquire_cookie(). The cache no longer calls back
into the filesystem, but rather metadata changes are indicated at
other times.
fscache_acquire_cookie() is passed the same keying and coherency
information as before.
(4) The functions to set/reset/flush cookies are removed and
fscache_use_cookie() and fscache_unuse_cookie() are used instead.
fscache_use_cookie() is passed a flag to indicate if the cookie is
opened for writing. fscache_unuse_cookie() is passed updates for the
metadata if we changed it (ie. if the file was opened for writing).
These are called when the file is opened or closed.
(5) wait_on_page_bit[_killable]() is replaced with the specific wait
functions for the bits waited upon.
(6) I've got rid of some of the 9p-specific cache helper functions and
called things like fscache_relinquish_cookie() directly as they'll
optimise away if v9fs_inode_cookie() returns an unconditional NULL
(which will be the case if CONFIG_9P_FSCACHE=n).
(7) v9fs_vfs_setattr() is made to call fscache_resize() to change the size
of the cache object.
Notes:
(A) We should call fscache_invalidate() if we detect that the server's
copy of a file got changed by a third party, but I don't know where to
do that. We don't need to do that when allocating the cookie as we
get a check-and-invalidate when we initially bind to the cache object.
(B) The copy-to-cache-on-writeback side of things will be handled in
separate patch.
Changes
=======
ver #3:
- Canonicalise the cookie key and coherency data to make them
endianness-independent.
ver #2:
- Use gfpflags_allow_blocking() rather than using flag directly.
- fscache_acquire_volume() now returns errors.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Jeff Layton <jlayton@kernel.org>
Tested-by: Dominique Martinet <asmadeus@codewreck.org>
cc: Eric Van Hensbergen <ericvh@gmail.com>
cc: Latchesar Ionkov <lucho@ionkov.net>
cc: v9fs-developer@lists.sourceforge.net
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/163819664645.215744.1555314582005286846.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/163906975017.143852.3459573173204394039.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163967178512.1823006.17377493641569138183.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/164021573143.640689.3977487095697717967.stgit@warthog.procyon.org.uk/ # v4
KASAN detected the following issue:
BUG: KASAN: slab-out-of-bounds in hyperv_flush_tlb_multi+0xf88/0x1060
Read of size 4 at addr ffff8880011ccbc0 by task kcompactd0/33
CPU: 1 PID: 33 Comm: kcompactd0 Not tainted 5.14.0-39.el9.x86_64+debug #1
Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine,
BIOS Hyper-V UEFI Release v4.0 12/17/2019
Call Trace:
dump_stack_lvl+0x57/0x7d
print_address_description.constprop.0+0x1f/0x140
? hyperv_flush_tlb_multi+0xf88/0x1060
__kasan_report.cold+0x7f/0x11e
? hyperv_flush_tlb_multi+0xf88/0x1060
kasan_report+0x38/0x50
hyperv_flush_tlb_multi+0xf88/0x1060
flush_tlb_mm_range+0x1b1/0x200
ptep_clear_flush+0x10e/0x150
...
Allocated by task 0:
kasan_save_stack+0x1b/0x40
__kasan_kmalloc+0x7c/0x90
hv_common_init+0xae/0x115
hyperv_init+0x97/0x501
apic_intr_mode_init+0xb3/0x1e0
x86_late_time_init+0x92/0xa2
start_kernel+0x338/0x3eb
secondary_startup_64_no_verify+0xc2/0xcb
The buggy address belongs to the object at ffff8880011cc800
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 960 bytes inside of
1024-byte region [ffff8880011cc800, ffff8880011ccc00)
'hyperv_flush_tlb_multi+0xf88/0x1060' points to
hv_cpu_number_to_vp_number() and '960 bytes' means we're trying to get
VP_INDEX for CPU#240. 'nr_cpus' here is exactly 240 so we're trying to
access past hv_vp_index's last element. This can (and will) happen
when 'cpus' mask is empty and cpumask_last() will return '>=nr_cpus'.
Commit ad0a6bad44 ("x86/hyperv: check cpu mask after interrupt has
been disabled") tried to deal with empty cpumask situation but
apparently didn't fully fix the issue.
'cpus' cpumask which is passed to hyperv_flush_tlb_multi() is
'mm_cpumask(mm)' (which is '&mm->cpu_bitmap'). This mask changes every
time the particular mm is scheduled/unscheduled on some CPU (see
switch_mm_irqs_off()), disabling IRQs on the CPU which is performing remote
TLB flush has zero influence on whether the particular process can get
scheduled/unscheduled on _other_ CPUs so e.g. in the case where the mm was
scheduled on one other CPU and got unscheduled during
hyperv_flush_tlb_multi()'s execution will lead to cpumask becoming empty.
It doesn't seem that there's a good way to protect 'mm_cpumask(mm)'
from changing during hyperv_flush_tlb_multi()'s execution. It would be
possible to copy it in the very beginning of the function but this is a
waste. It seems we can deal with changing cpumask just fine.
When 'cpus' cpumask changes during hyperv_flush_tlb_multi()'s
execution, there are two possible issues:
- 'Under-flushing': we will not flush TLB on a CPU which got added to
the mask while hyperv_flush_tlb_multi() was already running. This is
not a problem as this is equal to mm getting scheduled on that CPU
right after TLB flush.
- 'Over-flushing': we may flush TLB on a CPU which is already cleared
from the mask. First, extra TLB flush preserves correctness. Second,
Hyper-V's TLB flush hypercall takes 'mm->pgd' argument so Hyper-V may
avoid the flush if CR3 doesn't match.
Fix the immediate issue with cpumask_last()/hv_cpu_number_to_vp_number()
and remove the pointless cpumask_empty() check from the beginning of the
function as it really doesn't protect anything. Also, avoid the hypercall
altogether when 'flush->processor_mask' ends up being empty.
Fixes: ad0a6bad44 ("x86/hyperv: check cpu mask after interrupt has been disabled")
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220106094611.1404218-1-vkuznets@redhat.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
