Kefeng Wang [Wed, 8 Mar 2023 08:33:10 +0000 (16:33 +0800)]
mm/damon/paddr: minor refactor of damon_pa_mark_accessed_or_deactivate()
Omit one line by unified folio_put(), and make code more clear.
Link: https://lkml.kernel.org/r/20230308083311.120951-3-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Kefeng Wang [Wed, 8 Mar 2023 08:33:09 +0000 (16:33 +0800)]
mm/damon/paddr: minor refactor of damon_pa_pageout()
Patch series "mm/damon/paddr: minor code improvement", v3.
Unify folio_put() to make code more clear, and also fix minor issue in
damon_pa_young().
This patch (of 3):
Omit three lines by unified folio_put(), and make code more clear.
Link: https://lkml.kernel.org/r/20230308083311.120951-1-wangkefeng.wang@huawei.com
Link: https://lkml.kernel.org/r/20230308083311.120951-2-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Linus Torvalds [Tue, 2 May 2023 22:40:41 +0000 (15:40 -0700)]
Merge tag 'pinctrl-v6.4-1' of git://git./linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"Mostly drivers! Nothing special: some new Qualcomm chips as usual, and
the new NXP S32 and nVidia BlueField-3.
Core changes:
- Make a lot of pin controllers with GPIO and irqchips immutable,
i.e. not living structs, but const structs. This is driving a
changed initiated by the irqchip maintainers.
New drivers:
- New driver for the NXP S32 SoC pin controller
- As part of a thorough cleanup and restructuring of the
Ralink/Mediatek drivers, the Ralink MIPS pin control drivers were
folded into the Mediatek directory and the family is renamed
"mtmips". The Ralink chips live on as Mediatek MIPS family where
new variants can be added. As part of this work also the device
tree bindings were reworked.
- New subdriver for the Qualcomm SM7150 SoC.
- New subdriver for the Qualcomm IPQ9574 SoC.
- New driver for the nVidia BlueField-3 SoC.
- Support for the Qualcomm PMM8654AU mixed signal circuit GPIO.
- Support for the Qualcomm PMI632 mixed signal circuit GPIO.
Improvements:
- Add some missing pins and generic cleanups on the Renesas r8a779g0
and r8a779g0 pin controllers. Generic Renesas extension for power
source selection on several SoCs.
- Misc cleanups for the Atmel AT91 and AT91-PIO4 pin controllers
- Make the GPIO mode work on the Qualcomm SM8550-lpass-lpi driver.
- Several device tree binding cleanups as the binding YAML syntax is
solidifying"
* tag 'pinctrl-v6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (153 commits)
pinctrl-bcm2835.c: fix race condition when setting gpio dir
dt-bindings: pinctrl: qcom,sm8150: Drop duplicate function value "atest_usb2"
dt-bindings: pinctrl: qcom: Add few missing functions
pinctrl: qcom: spmi-gpio: Add PMI632 support
dt-bindings: pinctrl: qcom,pmic-gpio: add PMI632
pinctrl: wpcm450: select MFD_SYSCON
pinctrl: qcom ssbi-gpio: Convert to immutable irq_chip
pinctrl: qcom ssbi-mpp: Convert to immutable irq_chip
pinctrl: qcom spmi-mpp: Convert to immutable irq_chip
pinctrl: plgpio: Convert to immutable irq_chip
pinctrl: pistachio: Convert to immutable irq_chip
pinctrl: pic32: Convert to immutable irq_chip
pinctrl: sx150x: Convert to immutable irq_chip
pinctrl: stmfx: Convert to immutable irq_chip
pinctrl: st: Convert to immutable irq_chip
pinctrl: mcp23s08: Convert to immutable irq_chip
pinctrl: equilibrium: Convert to immutable irq_chip
pinctrl: npcm7xx: Convert to immutable irq_chip
pinctrl: armada-37xx: Convert to immutable irq_chip
pinctrl: nsp: Convert to immutable irq_chip
...
Linus Torvalds [Tue, 2 May 2023 18:56:43 +0000 (11:56 -0700)]
Merge tag 'vfio-v6.4-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
- Expose and allow R/W access to the PCIe DVSEC capability through
vfio-pci, as we already do with the legacy vendor capability
(K V P Satyanarayana)
- Fix kernel-doc issues with structure definitions (Simon Horman)
- Clarify ordering of operations relative to the kvm-vfio device for
driver dependencies against the kvm pointer (Yi Liu)
* tag 'vfio-v6.4-rc1' of https://github.com/awilliam/linux-vfio:
docs: kvm: vfio: Suggest KVM_DEV_VFIO_GROUP_ADD vs VFIO_GROUP_GET_DEVICE_FD ordering
vfio: correct kdoc for ops structures
vfio/pci: Add DVSEC PCI Extended Config Capability to user visible list.
Linus Torvalds [Tue, 2 May 2023 18:23:08 +0000 (11:23 -0700)]
Merge tag 'afs-fixes-
20230502' of git://git./linux/kernel/git/dhowells/linux-fs
Pull AFS updates from David Howells:
"Three fixes to AFS directory handling:
- Make sure that afs_read_dir() sees any increase in file size if the
file unexpectedly changed on the server (e.g. due to another client
making a change).
- Make afs_getattr() always return the server's dir file size, not
the locally edited one, so that pagecache eviction doesn't cause
the dir file size to change unexpectedly.
- Prevent afs_read_dir() from getting into an endless loop if the
server indicates that the directory file size is larger than
expected"
* tag 'afs-fixes-
20230502' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Avoid endless loop if file is larger than expected
afs: Fix getattr to report server i_size on dirs, not local size
afs: Fix updating of i_size with dv jump from server
Linus Torvalds [Tue, 2 May 2023 17:46:11 +0000 (10:46 -0700)]
Merge tag 'backlight-next-6.4' of git://git./linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones:
"Fix-ups:
- Add / improve Device Tree bindings
- Convert (int) .remove functions to (void) .remove_new
- Rid 'defined but not used' warnings
- Remove ineffective casts and pointer stubs
- Use specifically crafted API for testing DT property presence"
* tag 'backlight-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: as3711: Use of_property_read_bool() for boolean properties
backlight: hx8357: Use of_property_present() for testing DT property presence
backlight: arcxcnn_bl: Drop of_match_ptr for ID table
backlight: lp855x: Mark OF related data as maybe unused
backlight: sky81452-backlight: Convert to platform remove callback returning void
backlight: rt4831-backlight: Convert to platform remove callback returning void
backlight: qcom-wled: Convert to platform remove callback returning void
backlight: pwm_bl: Convert to platform remove callback returning void
backlight: mt6370-backlight: Convert to platform remove callback returning void
backlight: lp8788_bl: Convert to platform remove callback returning void
backlight: lm3533_bl: Convert to platform remove callback returning void
backlight: led_bl: Convert to platform remove callback returning void
backlight: hp680_bl: Convert to platform remove callback returning void
backlight: da9052_bl: Convert to platform remove callback returning void
backlight: cr_bllcd: Convert to platform remove callback returning void
backlight: adp5520_bl: Convert to platform remove callback returning void
backlight: aat2870_bl: Convert to platform remove callback returning void
backlight: qcom-wled: Add PMI8950 compatible
Linus Torvalds [Tue, 2 May 2023 17:41:31 +0000 (10:41 -0700)]
Merge tag 'mfd-next-6.4' of git://git./linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Drivers:
- Add support for Renesas RZ/G2L MTU3
New Device Support:
- Add support for Lenovo Yoga Book X90F to Intel CHT WC
- Add support for MAX5970 and MAX5978 to Simple MFD (I2C)
- Add support for Meteor Lake PCH-S LPSS PCI to Intel LPSS PCI
- Add support for AXP15060 PMIC to X-Powers PMIC collection
Remove Device Support:
- Remove support for Samsung 5M8751 and S5M8763 PMIC devices
New Functionality:
- Convert deprecated QCOM IRQ Chip to config registers
- Add support for 32-bit address spaces to Renesas SMUs
Fix-ups:
- Make use of APIs / MACROs designed to simplify and demystify
- Add / improve Device Tree bindings
- Memory saving struct layout optimisations
- Remove old / deprecated functionality
- Factor out unassigned register addresses from ranges
- Trivial: Spelling fixes, renames and coding style fixes
- Rid 'defined but not used' warnings
- Remove ineffective casts and pointer stubs
Bug Fixes:
- Fix incorrectly non-inverted mask/unmask IRQs on QCOM platforms
- Remove MODULE_*() helpers from non-tristate drivers
- Do not attempt to use out-of-range memory addresses associated with io_base
- Provide missing export helpers
- Fix remap bulk read optimisation fallout
- Fix memory leak issues in error paths"
* tag 'mfd-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (88 commits)
dt-bindings: mfd: ti,j721e-system-controller: Add SoC chip ID
leds: bd2606mvv: Driver for the Rohm 6 Channel i2c LED driver
dt-bindings: mfd: qcom,spmi-pmic: Document flash LED controller
dt-bindings: mfd: x-powers,axp152: Document the AXP15060 variant
mfd: axp20x: Add support for AXP15060 PMIC
dt-bindings: mfd: x-powers,axp152: Document the AXP313a variant
counter: rz-mtu3-cnt: Unlock on error in rz_mtu3_count_ceiling_write()
dt-bindings: mfd: dlg,da9063: Document voltage monitoring
dt-bindings: mfd: stm32: Remove unnecessary blank lines
dt-bindings: mfd: qcom,spmi-pmic: Use generic ADC node name in examples
dt-bindings: mfd: syscon: Add nuvoton,ma35d1-sys compatible
MAINTAINERS: Add entries for Renesas RZ/G2L MTU3a counter driver
counter: Add Renesas RZ/G2L MTU3a counter driver
Documentation: ABI: sysfs-bus-counter: add cascade_counts_enable and external_input_phase_clock_select
mfd: Add Renesas RZ/G2L MTU3a core driver
dt-bindings: timer: Document RZ/G2L MTU3a bindings
mfd: rsmu_i2c: Convert to i2c's .probe_new() again
mfd: intel-lpss: Add Intel Meteor Lake PCH-S LPSS PCI IDs
mfd: dln2: Fix memory leak in dln2_probe()
mfd: axp20x: Fix axp288 writable-ranges
...
Linus Torvalds [Tue, 2 May 2023 17:36:02 +0000 (10:36 -0700)]
Merge tag 'leds-next-6.4' of git://git./linux/kernel/git/lee/leds
Pull LED updates from Lee Jones:
"New Drivers:
- Add support for MediaTek MT6370 LED Indicator
- Add support for MediaTek MT6370 Flashlight
- Add support for QCOM PMIC Flash
- Add support for Rohm BD2606MVV Charge Pump LED
New Device Support:
- Add support for PMK8550 PWM to QCOM LPG
New Functionality:
- Add support for high resolution PWM to QCOM LPG
Fix-ups:
- Kconfig 'depends' and 'select' dependency changes
- Remove unused / irrelevant includes
- Remove unnecessary checks (already performed further into the call stack)
- Trivial: Fix commentary, simplify error messages
- Rid 'defined but not used' warnings
- Provide documentation
- Explicitly provide include files
Bug Fixes:
- Mark GPIO LED as BROKEN
- Fix Kconfig entries
- Fix various Smatch staticify reports
- Fix error handling (or a lack there of)"
* tag 'leds-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (30 commits)
leds: bd2606mvv: Driver for the Rohm 6 Channel i2c LED driver
dt-bindings: leds: Add ROHM BD2606MVV LED
docs: leds: ledtrig-oneshot: Fix spelling mistake
leds: pwm-multicolor: Simplify an error message
dt-bindings: leds: Convert PCA9532 to dtschema
leds: rgb: leds-qcom-lpg: Add support for PMK8550 PWM
leds: rgb: leds-qcom-lpg: Add support for high resolution PWM
dt-bindings: leds-qcom-lpg: Add qcom,pmk8550-pwm compatible string
leds: tca6507: Fix error handling of using fwnode_property_read_string
leds: flash: Set variables mvflash_{3,4}ch_regs storage-class-specifier to static
leds: rgb: mt6370: Correct config name to select in LEDS_MT6370_RGB
MAINTAINERS: Add entry for LED devices documentation
Documentation: leds: MT6370: Use bullet lists for timing variables
Documentation: leds: mt6370: Properly wrap hw_pattern chart
Documentation: leds: Add MT6370 doc to the toctree
leds: rgb: mt6370: Fix implicit declaration for FIELD_GET
docs: leds: Add MT6370 RGB LED pattern document
leds: flash: mt6370: Add MediaTek MT6370 flashlight support
leds: rgb: mt6370: Add MediaTek MT6370 current sink type LED Indicator support
dt-bindings: leds: spmi-flash-led: Add pm6150l compatible
...
Carlos Bilbao [Wed, 15 Mar 2023 14:35:26 +0000 (09:35 -0500)]
docs/sp_SP: Add translation of process/adding-syscalls
Translate Documentation/process/adding-syscalls.rst into Spanish.
Co-developed-by: Mauricio Fuentes <mauriciofb@gmail.com>
Signed-off-by: Mauricio Fuentes <mauriciofb@gmail.com>
Signed-off-by: Carlos Bilbao <carlos.bilbao@amd.com>
Link: https://lore.kernel.org/r/20230315143526.1213813-1-carlos.bilbao@amd.com
Mat Martineau [Tue, 2 May 2023 00:05:44 +0000 (17:05 -0700)]
CREDITS: Update email address for Mat Martineau
Changing my email address in CREDITS to be consistent with what's in use
in MAINTAINERS and mailmap. Also removed extra date information from the
CREDITS entry since I'm a maintainer for MPTCP again.
Signed-off-by: Mat Martineau <martineau@kernel.org>
Link: https://lore.kernel.org/r/20230502000545.2899055-1-martineau@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
晏艳(采苓) [Tue, 28 Mar 2023 07:25:37 +0000 (15:25 +0800)]
Documentation: update kernel stack for x86_64
Commit
6538b8ea886e ("x86_64: expand kernel stack to 16K")
expanded kernel stack for x86_64 but left the wrong documentation,
update it.
Signed-off-by: Yan Yan <yanyan.yan@antgroup.com>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Link: https://lore.kernel.org/r/20230328072537.20188-1-yanyan.yan@antgroup.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Tao Liu [Wed, 26 Apr 2023 02:14:52 +0000 (10:14 +0800)]
docs: Remove unnecessary unicode character
There is a non-printable unicode char '\u202a' or "0xe2 0x80 0xaa" in hex
in the translation doc. It is unnecessary and should be removed for better
text formatting when using editors like vi.
Signed-off-by: Tao Liu <ltao@redhat.com>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/20230426021452.9745-1-ltao@redhat.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Deming Wang [Tue, 2 May 2023 01:01:57 +0000 (21:01 -0400)]
docs: fix "Reviewd" typo
Spell "Reviewed" properly in Documentation/Translations/jp/SubmittingPatches
Signed-off-by: Deming Wang <wangdeming@inspur.com>
Reviewed-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/20230502010157.1655-1-wangdeming@inspur.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Geert Uytterhoeven [Tue, 2 May 2023 10:05:10 +0000 (12:05 +0200)]
Documentation: timers: hrtimers: Make hybrid union historical
Non-scalar time was removed from the ktime hybrid union in v3.17, and
the union itself followed suit in v4.10.
Make it clear that ktime_t is always a 64bit scalar type, to avoid
confusing the casual reader.
While at it, fix a spelling mistake.
Fixes: 24e4a8c3e8868874 ("ktime: Kill non-scalar ktime_t implementation for 2038")
Fixes: 2456e855354415bf ("ktime: Get rid of the union")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/59250a3d1c2c827b5c1833169a6e652ca6a784e6.1683021785.git.geert+renesas@glider.be
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Marc Dionne [Fri, 2 Dec 2022 14:19:42 +0000 (10:19 -0400)]
afs: Avoid endless loop if file is larger than expected
afs_read_dir fetches an amount of data that's based on what the inode
size is thought to be. If the file on the server is larger than what
was fetched, the code rechecks i_size and retries. If the local i_size
was not properly updated, this can lead to an endless loop of fetching
i_size from the server and noticing each time that the size is larger on
the server.
If it is known that the remote size is larger than i_size, bump up the
fetch size to that size.
Fixes: f3ddee8dc4e2 ("afs: Fix directory handling")
Signed-off-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-afs@lists.infradead.org
David Howells [Tue, 6 Dec 2022 13:49:42 +0000 (13:49 +0000)]
afs: Fix getattr to report server i_size on dirs, not local size
Fix afs_getattr() to report the server's idea of the file size of a
directory rather than the local size. The local size may differ as we edit
the local copy to avoid having to redownload it and we may end up with a
differently structured blob of a different size.
However, if the directory is discarded from the pagecache we then download
it again and the user may see the directory file size apparently change.
Fixes: 63a4681ff39c ("afs: Locally edit directory data for mkdir/create/unlink/...")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Marc Dionne [Fri, 2 Dec 2022 14:07:01 +0000 (10:07 -0400)]
afs: Fix updating of i_size with dv jump from server
If the data version returned from the server is larger than expected,
the local data is invalidated, but we may still want to note the remote
file size.
Since we're setting change_size, we have to also set data_changed
for the i_size to get updated.
Fixes: 3f4aa9818163 ("afs: Fix EOF corruption")
Signed-off-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-afs@lists.infradead.org
Fangrui Song [Tue, 2 May 2023 07:41:05 +0000 (07:41 +0000)]
arm64: lds: move .got section out of .text
Currently, the .got section is placed within the output section .text.
However, when .got is non-empty, the SHF_WRITE flag is set for .text
when linked by lld. GNU ld recognizes .text as a special section and
ignores the SHF_WRITE flag. By renaming .text, we can also get the
SHF_WRITE flag.
The kernel has performed R_AARCH64_RELATIVE resolving very early, and can
then assume that .got is read-only. Let's move .got to the vmlinux_rodata
pseudo-segment.
As Ard Biesheuvel notes:
"This matters to consumers of the vmlinux ELF representation of the
kernel image, such as syzkaller, which disregards writable PT_LOAD
segments when resolving code symbols. The kernel itself does not care
about this distinction, but given that the GOT contains data and not
code, it does not require executable permissions, and therefore does
not belong in .text to begin with."
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Fangrui Song <maskray@google.com>
Link: https://lore.kernel.org/r/20230502074105.1541926-1-maskray@google.com
Signed-off-by: Will Deacon <will@kernel.org>
ndesaulniers@google.com [Fri, 28 Apr 2023 18:28:17 +0000 (11:28 -0700)]
arm64: kernel: remove SHF_WRITE|SHF_EXECINSTR from .idmap.text
commit
d54170812ef1 ("arm64: fix .idmap.text assertion for large kernels")
modified some of the section assembler directives that declare
.idmap.text to be SHF_ALLOC instead of
SHF_ALLOC|SHF_WRITE|SHF_EXECINSTR.
This patch fixes up the remaining stragglers that were left behind. Add
Fixes tag so that this doesn't precede related change in stable.
Fixes: d54170812ef1 ("arm64: fix .idmap.text assertion for large kernels")
Reported-by: Greg Thelen <gthelen@google.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20230428-awx-v2-1-b197ffa16edc@google.com
Signed-off-by: Will Deacon <will@kernel.org>
Kristina Martsenko [Fri, 28 Apr 2023 13:25:46 +0000 (14:25 +0100)]
arm64: cpufeature: Fix pointer auth hwcaps
The pointer auth hwcaps are not getting reported to userspace, as they
are missing the .matches field. Add the field back.
Fixes: 876e3c8efe79 ("arm64/cpufeature: Pull out helper for CPUID register definitions")
Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230428132546.2513834-1-kristina.martsenko@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Conor Dooley [Thu, 20 Apr 2023 18:30:16 +0000 (19:30 +0100)]
RISC-V: include cpufeature.h in cpufeature.c
Automation complains:
warning: symbol '__pcpu_scope_misaligned_access_speed' was not declared. Should it be static?
cpufeature.c doesn't actually include the header of the same name, as it
had not previously used anything from it.
The per-cpu variable is declared there, so include it to silence the
complaints.
Fixes: 62a31d6e38bd ("RISC-V: hwprobe: Support probing of misaligned access performance")
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Evan Green <evan@rivosinc.com>
Link: https://lore.kernel.org/r/20230420-wound-gizzard-2b2b589d9bea@spud
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Linus Torvalds [Tue, 2 May 2023 00:18:56 +0000 (17:18 -0700)]
Merge tag 'input-for-v6.4-rc0' of git://git./linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
- a new driver for Novatek touch controllers
- a new driver for power button for NXP BBNSM
- a skeleton KUnit tests for the input core
- improvements to Xpad game controller driver to support more devices
- improvements to edt-ft5x06, hideep and other drivers
* tag 'input-for-v6.4-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (42 commits)
Revert "Input: xpad - fix support for some third-party controllers"
dt-bindings: input: pwm-beeper: convert to dt schema
Input: xpad - fix PowerA EnWired Controller guide button
Input: xpad - add constants for GIP interface numbers
Input: synaptics-rmi4 - fix function name in kerneldoc
Input: raspberrypi-ts - fix refcount leak in rpi_ts_probe
Input: edt-ft5x06 - select REGMAP_I2C
Input: melfas_mip4 - report palm touches
Input: cma3000_d0x - remove unneeded code
Input: edt-ft5x06 - calculate points data length only once
Input: edt-ft5x06 - unify the crc check
Input: edt-ft5x06 - convert to use regmap API
Input: edt-ft5x06 - don't print error messages with dev_dbg()
Input: edt-ft5x06 - remove code duplication
Input: edt-ft5x06 - don't recalculate the CRC
Input: edt-ft5x06 - add spaces to ensure format specification
Input: edt-ft5x06 - remove unnecessary blank lines
Input: edt-ft5x06 - fix indentation
Input: tsc2007 - enable cansleep pendown GPIO
Input: Add KUnit tests for some of the input core helper functions
...
Alexandre Ghiti [Fri, 28 Apr 2023 12:09:32 +0000 (14:09 +0200)]
riscv: Move .rela.dyn to the init sections
The recent introduction of relocatable kernels prepared the move of
.rela.dyn to the init section, but actually forgot to do so, so do it
here.
Before this patch: "Freeing unused kernel image (initmem) memory: 2592K"
After this patch: "Freeing unused kernel image (initmem) memory: 6288K"
The difference corresponds to the size of the .rela.dyn section:
"[42] .rela.dyn RELA
ffffffff8197e798 0127f798
000000000039c660 0000000000000018 A 47 0 8"
Fixes: 559d1e45a16d ("riscv: Use --emit-relocs in order to move .rela.dyn in init")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20230428120932.22735-1-alexghiti@rivosinc.com
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Conor Dooley [Thu, 27 Apr 2023 10:43:42 +0000 (11:43 +0100)]
dt-bindings: riscv: explicitly mention assumption of Zicsr & Zifencei support
The dt-binding was defined before the extraction of csr access and
fence.i into their own extensions, and thus the presence of the I
base extension implies Zicsr and Zifencei.
There's no harm in adding them obviously, but for backwards
compatibility with DTs that existed prior to that extraction, software
is unable to differentiate between "i" and "i_zicsr_zifencei" without
any further information.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230427-fence-blurred-c92fb69d4137@wendy
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Guo Ren [Mon, 1 May 2023 22:33:54 +0000 (15:33 -0700)]
riscv: compat_syscall_table: Fixup compile warning
../arch/riscv/kernel/compat_syscall_table.c:12:41: warning: initialized
field overwritten [-Woverride-init]
12 | #define __SYSCALL(nr, call) [nr] = (call),
| ^
../include/uapi/asm-generic/unistd.h:567:1: note: in expansion of macro
'__SYSCALL'
567 | __SYSCALL(__NR_semget, sys_semget)
Fixes: 59c10c52f573 ("riscv: compat: syscall: Add compat_sys_call_table implementation")
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reported-by: kernel test robot <lkp@intel.com>
Tested-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Drew Fustini <dfustini@baylibre.com>
Link: https://lore.kernel.org/r/20230501223353.2833899-1-dfustini@baylibre.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Dmitry Torokhov [Mon, 1 May 2023 22:20:08 +0000 (15:20 -0700)]
Merge branch 'next' into for-linus
Prepare input updates for 6.4 merge window.
Dmitry Torokhov [Mon, 1 May 2023 22:11:55 +0000 (15:11 -0700)]
Revert "Input: xpad - fix support for some third-party controllers"
This reverts commit
db7220c48d8d71476f881a7ae1285e1df4105409 because it
causes crashes when trying to dereference xpad->dev->dev in xpad_probe()
which has not been set up yet.
Reported-by: syzbot+a3f758b8d8cb7e49afec@syzkaller.appspotmail.com
Reported-by: Dongliang Mu <dzm91@hust.edu.cn>
Link: https://groups.google.com/g/syzkaller-bugs/c/iMhTgpGuIbM
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Linus Torvalds [Mon, 1 May 2023 19:06:20 +0000 (12:06 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"s390:
- More phys_to_virt conversions
- Improvement of AP management for VSIE (nested virtualization)
ARM64:
- Numerous fixes for the pathological lock inversion issue that
plagued KVM/arm64 since... forever.
- New framework allowing SMCCC-compliant hypercalls to be forwarded
to userspace, hopefully paving the way for some more features being
moved to VMMs rather than be implemented in the kernel.
- Large rework of the timer code to allow a VM-wide offset to be
applied to both virtual and physical counters as well as a
per-timer, per-vcpu offset that complements the global one. This
last part allows the NV timer code to be implemented on top.
- A small set of fixes to make sure that we don't change anything
affecting the EL1&0 translation regime just after having having
taken an exception to EL2 until we have executed a DSB. This
ensures that speculative walks started in EL1&0 have completed.
- The usual selftest fixes and improvements.
x86:
- Optimize CR0.WP toggling by avoiding an MMU reload when TDP is
enabled, and by giving the guest control of CR0.WP when EPT is
enabled on VMX (VMX-only because SVM doesn't support per-bit
controls)
- Add CR0/CR4 helpers to query single bits, and clean up related code
where KVM was interpreting kvm_read_cr4_bits()'s "unsigned long"
return as a bool
- Move AMD_PSFD to cpufeatures.h and purge KVM's definition
- Avoid unnecessary writes+flushes when the guest is only adding new
PTEs
- Overhaul .sync_page() and .invlpg() to utilize .sync_page()'s
optimizations when emulating invalidations
- Clean up the range-based flushing APIs
- Revamp the TDP MMU's reaping of Accessed/Dirty bits to clear a
single A/D bit using a LOCK AND instead of XCHG, and skip all of
the "handle changed SPTE" overhead associated with writing the
entire entry
- Track the number of "tail" entries in a pte_list_desc to avoid
having to walk (potentially) all descriptors during insertion and
deletion, which gets quite expensive if the guest is spamming
fork()
- Disallow virtualizing legacy LBRs if architectural LBRs are
available, the two are mutually exclusive in hardware
- Disallow writes to immutable feature MSRs (notably
PERF_CAPABILITIES) after KVM_RUN, similar to CPUID features
- Overhaul the vmx_pmu_caps selftest to better validate
PERF_CAPABILITIES
- Apply PMU filters to emulated events and add test coverage to the
pmu_event_filter selftest
- AMD SVM:
- Add support for virtual NMIs
- Fixes for edge cases related to virtual interrupts
- Intel AMX:
- Don't advertise XTILE_CFG in KVM_GET_SUPPORTED_CPUID if
XTILE_DATA is not being reported due to userspace not opting in
via prctl()
- Fix a bug in emulation of ENCLS in compatibility mode
- Allow emulation of NOP and PAUSE for L2
- AMX selftests improvements
- Misc cleanups
MIPS:
- Constify MIPS's internal callbacks (a leftover from the hardware
enabling rework that landed in 6.3)
Generic:
- Drop unnecessary casts from "void *" throughout kvm_main.c
- Tweak the layout of "struct kvm_mmu_memory_cache" to shrink the
struct size by 8 bytes on 64-bit kernels by utilizing a padding
hole
Documentation:
- Fix goof introduced by the conversion to rST"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (211 commits)
KVM: s390: pci: fix virtual-physical confusion on module unload/load
KVM: s390: vsie: clarifications on setting the APCB
KVM: s390: interrupt: fix virtual-physical confusion for next alert GISA
KVM: arm64: Have kvm_psci_vcpu_on() use WRITE_ONCE() to update mp_state
KVM: arm64: Acquire mp_state_lock in kvm_arch_vcpu_ioctl_vcpu_init()
KVM: selftests: Test the PMU event "Instructions retired"
KVM: selftests: Copy full counter values from guest in PMU event filter test
KVM: selftests: Use error codes to signal errors in PMU event filter test
KVM: selftests: Print detailed info in PMU event filter asserts
KVM: selftests: Add helpers for PMC asserts in PMU event filter test
KVM: selftests: Add a common helper for the PMU event filter guest code
KVM: selftests: Fix spelling mistake "perrmited" -> "permitted"
KVM: arm64: vhe: Drop extra isb() on guest exit
KVM: arm64: vhe: Synchronise with page table walker on MMU update
KVM: arm64: pkvm: Document the side effects of kvm_flush_dcache_to_poc()
KVM: arm64: nvhe: Synchronise with page table walker on TLBI
KVM: arm64: Handle 32bit CNTPCTSS traps
KVM: arm64: nvhe: Synchronise with page table walker on vcpu run
KVM: arm64: vgic: Don't acquire its_lock before config_lock
KVM: selftests: Add test to verify KVM's supported XCR0
...
Linus Torvalds [Mon, 1 May 2023 18:52:32 +0000 (11:52 -0700)]
Merge tag 'for-linus' of https://github.com/openrisc/linux
Pull OpenRISC updates from Stafford Horne:
"Two things for OpenRISC this cycle:
- Small cleanup for device tree cpu iteration from Rob Herring
- Add support for storing, restoring and accessing user space FPU
state, to allow for libc to support the FPU on OpenRISC"
* tag 'for-linus' of https://github.com/openrisc/linux:
openrisc: Add floating point regset
openrisc: Support floating point user api
openrisc: Support storing and restoring fpu state
openrisc: Properly store r31 to pt_regs on unhandled exceptions
openrisc: Use common of_get_cpu_node() instead of open-coding
Linus Torvalds [Mon, 1 May 2023 18:14:12 +0000 (11:14 -0700)]
Merge tag 'rtc-6.4' of git://git./linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"Not much this cycle, there is the conversion to remove_new and many
small fixes in drivers:
Subsystem:
- Convert to platform remove callback returning void
Drivers:
- meson-vrtc: fix a firmware display issue"
* tag 'rtc-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (53 commits)
rtc: armada38x: use devm_platform_ioremap_resource_byname()
rtc: sunplus: use devm_platform_ioremap_resource_byname()
rtc: jz4740: Make sure clock provider gets removed
rtc: k3: handle errors while enabling wake irq
rtc: meson-vrtc: Use ktime_get_real_ts64() to get the current time
dt-bindings: rtc: Drop unneeded quotes
rtc: pcf8523: remove unnecessary OR operation
rtc: pcf8523: fix coding-style issues
rtc: ds1390: mark OF related data as maybe unused
rtc: omap: include header for omap_rtc_power_off_program prototype
rtc: sun6i: Use of_property_present() for testing DT property presence
rtc: mpfs: convert SOC_MICROCHIP_POLARFIRE to ARCH_MICROCHIP_POLARFIRE
rtc: zynqmp: Convert to platform remove callback returning void
rtc: xgene: Convert to platform remove callback returning void
rtc: wm8350: Convert to platform remove callback returning void
rtc: vt8500: Convert to platform remove callback returning void
rtc: twl: Convert to platform remove callback returning void
rtc: tps6586x: Convert to platform remove callback returning void
rtc: tegra: Convert to platform remove callback returning void
rtc: sunplus: Convert to platform remove callback returning void
...
Linus Torvalds [Mon, 1 May 2023 18:08:01 +0000 (11:08 -0700)]
Merge tag 'i3c/for-6.4' of git://git./linux/kernel/git/i3c/linux
Pull i3c updates from Alexandre Belloni:
"Subsystem:
- OF alias bus numbering
- convert to platform remove callback returning void
New driver:
- AST2600 controller, based on Synopsys DesignWare IP
Driver update:
- dw: add infrastructure to support different platform integrations"
* tag 'i3c/for-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux:
i3c: ast2600: set variable ast2600_i3c_ops storage-class-specifier to static
i3c: ast2600: fix register setting for 545 ohm pullups
i3c: ast2600: enable IBI support
i3c: dw: Add a platform facility for IBI PEC workarounds
i3c: dw: Add support for in-band interrupts
i3c: dw: Turn DAT array entry into a struct
i3c: dw: Create a generic fifo read function
i3c: Allow OF-alias-based persistent bus numbering
i3c: ast2600: Add AST2600 platform-specific driver
dt-bindings: i3c: Add AST2600 i3c controller
i3c: dw: Add infrastructure for platform-specific implementations
i3c: dw: use bus mode rather than device reg for conditional tCAS setting
i3c: dw: Return the length from a read priv_xfer
i3c: svc: Convert to platform remove callback returning void
i3c: mipi-i3c-hci: Convert to platform remove callback returning void
i3c: cdns: Convert to platform remove callback returning void
i3c: dw: Convert to platform remove callback returning void
i3c: Make i3c_master_unregister() return void
i3c: dw: drop of_match_ptr for ID table
i3c: Correct reference to the I²C device data type
Linus Torvalds [Mon, 1 May 2023 18:00:04 +0000 (11:00 -0700)]
Merge tag 'ext4_for_linus_stable' of git://git./linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Some ext4 regression and bug fixes"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: clean up error handling in __ext4_fill_super()
ext4: reflect error codes from ext4_multi_mount_protect() to its callers
ext4: fix lost error code reporting in __ext4_fill_super()
ext4: fix unused iterator variable warnings
ext4: fix use-after-free read in ext4_find_extent for bigalloc + inline
ext4: fix i_disksize exceeding i_size problem in paritally written case
Linus Torvalds [Mon, 1 May 2023 17:43:44 +0000 (10:43 -0700)]
Merge tag '6.4-rc-smb3-client-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
- deferred close fix for an important case when cached file should be
closed immediately
- two fixes for missing locks
- eight minor cleanup
* tag '6.4-rc-smb3-client-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update internal module version number for cifs.ko
smb3: move some common open context structs to smbfs_common
smb3: make query_on_disk_id open context consistent and move to common code
SMB3.1.1: add new tree connect ShareFlags
cifs: missing lock when updating session status
SMB3: Close deferred file handles in case of handle lease break
SMB3: Add missing locks to protect deferred close file list
cifs: Avoid a cast in add_lease_context()
cifs: Simplify SMB2_open_init()
cifs: Simplify SMB2_open_init()
cifs: Simplify SMB2_open_init()
Linus Torvalds [Mon, 1 May 2023 17:37:37 +0000 (10:37 -0700)]
Merge tag 'tpmdd-v6.4-rc1-fix-v2' of git://git./linux/kernel/git/jarkko/linux-tpmdd
Pull tpm fix from Jarkko Sakkinen:
"This fixes a critical bug in my first pull request.
I fixed the cherry pick issue and tested with real hardare and
libvirt/qemu plus swtpm"
* tag 'tpmdd-v6.4-rc1-fix-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
tpm: Re-enable TPM chip boostrapping non-tpm_tis TPM drivers
Huacai Chen [Mon, 1 May 2023 09:19:59 +0000 (17:19 +0800)]
tools/perf: Add basic support for LoongArch
Add basic support for LoongArch, which is very similar to the MIPS
version.
Signed-off-by: Ming Wang <wangming01@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Youling Tang [Mon, 1 May 2023 09:19:53 +0000 (17:19 +0800)]
LoongArch: ftrace: Add direct call trampoline samples support
The ftrace samples need per-architecture trampoline implementations to
save and restore argument registers around the calls to my_direct_func*
and to restore polluted registers (e.g: ra).
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Youling Tang [Mon, 1 May 2023 09:19:53 +0000 (17:19 +0800)]
LoongArch: ftrace: Add direct call support
Select the HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS to provide the
register_ftrace_direct[_multi] interfaces allowing users to register
the customed trampoline (direct_caller) as the mcount for one or more
target functions. And modify_ftrace_direct[_multi] are also provided
for modifying direct_caller.
There are a few cases to distinguish:
- If a direct call ops is the only one tracing a function AND the direct
called trampoline is within the reach of a 'bl' instruction
-> the ftrace patchsite jumps to the trampoline
- Else
-> the ftrace patchsite jumps to the ftrace_regs_caller trampoline points
to ftrace_list_ops so it iterates over all registered ftrace ops,
including the direct call ops and calls its call_direct_funcs handler
which stores the direct called trampoline's address in the ftrace_regs
and the ftrace_regs_caller trampoline will return to that address
instead of returning to the traced function
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Youling Tang [Mon, 1 May 2023 09:19:53 +0000 (17:19 +0800)]
LoongArch: ftrace: Implement ftrace_find_callable_addr() to simplify code
In the module processing functions, the same logic can be reused by
implementing ftrace_find_callable_addr().
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Youling Tang [Mon, 1 May 2023 09:19:52 +0000 (17:19 +0800)]
LoongArch: ftrace: Fix build error if DYNAMIC_FTRACE_WITH_REGS is not set
We can see the following build error if CONFIG_DYNAMIC_FTRACE_WITH_REGS
is not set on LoongArch:
arch/loongarch/kernel/ftrace_dyn.c: In function ‘ftrace_make_call’:
arch/loongarch/kernel/ftrace_dyn.c:167:23: error: implicit declaration of function ‘__get_mod’
167 | ret = __get_mod(&mod, pc);
| ^~~~~~~~~
arch/loongarch/kernel/ftrace_dyn.c:171:24: error: implicit declaration of function ‘get_plt_addr’
171 | addr = get_plt_addr(mod, addr);
| ^~~~~~~~~~~~
The reason is that the __get_mod() and get_plt_addr() may be called in
ftrace_make_{call,nop}.
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Qing Zhang [Mon, 1 May 2023 09:19:52 +0000 (17:19 +0800)]
LoongArch: ftrace: Abstract DYNAMIC_FTRACE_WITH_ARGS accesses
Add new ftrace_regs_{get,set}_*() helpers which can be used to manipulate
ftrace_regs. When CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS=y, these can always
be used on any ftrace_regs, and when CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS
=n these can be used when regs are available.
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Tiezhu Yang [Mon, 1 May 2023 09:19:52 +0000 (17:19 +0800)]
LoongArch: Add support for function error injection
Inspired by the commit
42d038c4fb00f ("arm64: Add support for function
error injection") and the commit
ee55ff803b383 ("riscv: Add support for
function error injection"), this patch supports function error injection
for LoongArch.
Mainly implement two functions:
(1) regs_set_return_value() which is used to overwrite the return value,
(2) override_function_with_return() which is used to override the probed
function returning and jump to its caller.
Here is a simple test under CONFIG_FUNCTION_ERROR_INJECTION and
CONFIG_FAIL_FUNCTION:
# echo sys_clone > /sys/kernel/debug/fail_function/inject
# echo 100 > /sys/kernel/debug/fail_function/probability
# dmesg
bash: fork: Invalid argument
# dmesg
...
FAULT_INJECTION: forcing a failure.
name fail_function, interval 1, probability 100, space 0, times 1
...
Call Trace:
[<
90000000002238f4>] show_stack+0x5c/0x180
[<
90000000012e384c>] dump_stack_lvl+0x60/0x88
[<
9000000000b1879c>] should_fail_ex+0x1b0/0x1f4
[<
900000000032ead4>] fei_kprobe_handler+0x28/0x6c
[<
9000000000230970>] kprobe_breakpoint_handler+0xf0/0x118
[<
90000000012e3e60>] do_bp+0x2c4/0x358
[<
9000000002241924>] exception_handlers+0x1924/0x10000
[<
900000000023b7d0>] sys_clone+0x0/0x4
[<
90000000012e4744>] do_syscall+0x7c/0x94
[<
9000000000221e44>] handle_syscall+0xc4/0x160
Tested-by: Hengqi Chen <hengqi.chen@gmail.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Qing Zhang [Mon, 1 May 2023 09:19:52 +0000 (17:19 +0800)]
LoongArch: Add ARCH_HAS_FORTIFY_SOURCE selection
FORTIFY_SOURCE could detect various overflows at compile and run time.
ARCH_HAS_FORTIFY_SOURCE means that the architecture can be built and run
with CONFIG_FORTIFY_SOURCE. So select it in LoongArch.
See more about this feature from commit
6974f0c4555e285 ("include/linux/
string.h: add the option of fortified string.h functions").
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Min Zhou [Mon, 1 May 2023 09:19:43 +0000 (17:19 +0800)]
LoongArch: crypto: Add crc32 and crc32c hw acceleration
With a blatant copy of some MIPS bits we introduce the crc32 and crc32c
hw accelerated module to LoongArch.
LoongArch has provided these instructions to calculate crc32 and crc32c:
* crc.w.b.w crcc.w.b.w
* crc.w.h.w crcc.w.h.w
* crc.w.w.w crcc.w.w.w
* crc.w.d.w crcc.w.d.w
So we can make use of these instructions to improve the performance of
calculation for crc32(c) checksums.
As can be seen from the following test results, crc32(c) instructions
can improve the performance by 58%.
Software implemention Hardware acceleration
Buffer size time cost (seconds) time cost (seconds) Accel.
100 KB 0.000845 0.000534 59.1%
1 MB 0.007758 0.004836 59.4%
10 MB 0.076593 0.047682 59.4%
100 MB 0.756734 0.479126 58.5%
1000 MB 7.563841 4.778266 58.5%
Signed-off-by: Min Zhou <zhoumin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Bibo Mao [Mon, 1 May 2023 09:19:43 +0000 (17:19 +0800)]
LoongArch: Add checksum optimization for 64-bit system
LoongArch platform is 64-bit system, which supports 8-bytes memory
accessing, but generic checksum functions use 4-byte memory access.
So add 8-bytes memory access optimization for checksum functions on
LoongArch. And the code comes from arm64 system.
When network hw checksum is disabled, iperf performance improves about
10% with this patch.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Rui [Mon, 1 May 2023 09:19:43 +0000 (17:19 +0800)]
LoongArch: Optimize memory ops (memset/memcpy/memmove)
To optimize memset()/memcpy()/memmove() and so on, we use a jump table
to dispatch cases for short data lengths; and for long data lengths, we
split the destination into head part (first 8 bytes), tail part (last 8
bytes) and middle part. The head part and tail part may be at unaligned
addresses, while the middle part is always aligned (the middle part is
allowed to overlap the head/tail part). In this way, the first and last
8 bytes may be unaligned accesses, but we can make sure the data in the
middle is processed at an aligned destination address.
We have tested micro-bench[1] on a Loongson-3C5000 16-core machine (2.2GHz):
1. memset
| length | src offset | dst offset | speed before | speed after | % |
|--------|------------|------------|--------------|-------------|---------|
| 8 | 0 | 0 | 696.191 | 1518.785 | 118.16% |
| 8 | 0 | 1 | 696.325 | 1518.937 | 118.14% |
| 50 | 0 | 0 | 969.976 | 8053.902 | 730.32% |
| 50 | 0 | 1 | 970.034 | 8058.475 | 730.74% |
| 300 | 0 | 0 | 5876.612 | 16544.703 | 181.53% |
| 300 | 0 | 1 | 5030.849 | 16549.011 | 228.95% |
| 1200 | 0 | 0 | 11797.077 | 16752.137 | 42.00% |
| 1200 | 0 | 1 | 5687.141 | 16645.233 | 192.68% |
| 4000 | 0 | 0 | 15723.27 | 16761.557 | 6.60% |
| 4000 | 0 | 1 | 5906.114 | 16732.316 | 183.30% |
| 8000 | 0 | 0 | 16751.403 | 16770.002 | 0.11% |
| 8000 | 0 | 1 | 5995.449 | 16754.07 | 179.45% |
2. memcpy
| length | src offset | dst offset | speed before | speed after | % |
|--------|------------|------------|--------------|-------------|---------|
| 8 | 0 | 0 | 696.2 | 1670.605 | 139.96% |
| 8 | 0 | 1 | 696.325 | 1671.138 | 139.99% |
| 50 | 0 | 0 | 969.974 | 8724.999 | 799.51% |
| 50 | 0 | 1 | 970.032 | 8730.138 | 799.98% |
| 300 | 0 | 0 | 5564.662 | 16272.652 | 192.43% |
| 300 | 0 | 1 | 4670.436 | 14972.842 | 220.59% |
| 1200 | 0 | 0 | 10740.23 | 16751.728 | 55.97% |
| 1200 | 0 | 1 | 5027.741 | 14874.564 | 195.85% |
| 4000 | 0 | 0 | 15122.367 | 16737.642 | 10.68% |
| 4000 | 0 | 1 | 5536.918 | 14890.397 | 168.93% |
| 8000 | 0 | 0 | 16505.453 | 16553.543 | 0.29% |
| 8000 | 0 | 1 | 5821.619 | 14841.804 | 154.94% |
3. memmove
| length | src offset | dst offset | speed before | speed after | % |
|--------|------------|------------|--------------|-------------|---------|
| 8 | 0 | 0 | 982.693 | 1670.568 | 70.00% |
| 8 | 0 | 1 | 983.023 | 1671.174 | 70.00% |
| 50 | 0 | 0 | 1230.87 | 8727.625 | 609.06% |
| 50 | 0 | 1 | 1232.515 | 8730.138 | 608.32% |
| 300 | 0 | 0 | 6490.375 | 16296.993 | 151.09% |
| 300 | 0 | 1 | 4282.687 | 14972.842 | 249.61% |
| 1200 | 0 | 0 | 11742.755 | 16752.546 | 42.66% |
| 1200 | 0 | 1 | 5039.338 | 14872.951 | 195.14% |
| 4000 | 0 | 0 | 15467.786 | 16737.09 | 8.21% |
| 4000 | 0 | 1 | 5009.905 | 14890.542 | 197.22% |
| 8000 | 0 | 0 | 16489.664 | 16553.273 | 0.39% |
| 8000 | 0 | 1 | 5823.786 | 14858.646 | 155.14% |
* speed: MB/s
* length: byte
[1] https://github.com/heiher/mem-bench
Signed-off-by: WANG Rui <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Huacai Chen [Mon, 1 May 2023 09:19:27 +0000 (17:19 +0800)]
LoongArch: Provide kernel fpu functions
Provide kernel_fpu_begin()/kernel_fpu_end() to allow the kernel itself
to use fpu. They can be used by some other kernel components, e.g., the
AMDGPU graphic driver for DCN.
Reported-by: WANG Xuerui <kernel@xen0n.name>
Tested-by: WANG Xuerui <kernel@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Xuerui [Mon, 1 May 2023 09:19:27 +0000 (17:19 +0800)]
LoongArch: Relay BCE exceptions to userland as SIGSEGV with si_code=SEGV_BNDERR
SEGV_BNDERR was introduced initially for supporting the Intel MPX, but
fell into disuse after the MPX support was removed. The LoongArch
bounds-checking instructions behave very differently than MPX, but
overall the interface is still kind of suitable for conveying the
information to userland when bounds-checking assertions trigger, so we
wouldn't have to invent more UAPI. Specifically, when the BCE triggers,
a SEGV_BNDERR is sent to userland, with si_addr set to the out-of-bounds
address or value (in asrt{gt,le}'s case), and one of si_lower or
si_upper set to the configured bound depending on the faulting
instruction. The other bound is set to either 0 or ULONG_MAX to resemble
a range with both lower and upper bounds.
Note that it is possible to have si_addr == si_lower in case of a
failing asrtgt or {ld,st}gt, because those instructions test for strict
greater-than relationship. This should not pose a problem for userland,
though, because the faulting PC is available for the application to
associate back to the exact instruction for figuring out the
expectation.
Example exception context generated by a faulting `asrtgt.d t0, t1`
(assert t0 > t1 or BCE) with t0=100 and t1=200:
> pc
00005555558206a4 ra
00007ffff2d854fc tp
00007ffff2f2f180 sp
00007ffffbf9fb80
> a0
0000000000000002 a1
00007ffffbf9fce8 a2
00007ffffbf9fd00 a3
00007ffff2ed4558
> a4
0000000000000000 a5
00007ffff2f044c8 a6
00007ffffbf9fce0 a7
fffffffffffff000
> t0
0000000000000064 t1
00000000000000c8 t2
00007ffffbfa2d5e t3
00007ffff2f12aa0
> t4
00007ffff2ed6158 t5
00007ffff2ed6158 t6
000000000000002e t7
0000000003d8f538
> t8
0000000000000005 u0
0000000000000000 s9
0000000000000000 s0
00007ffffbf9fce8
> s1
0000000000000002 s2
0000000000000000 s3
00007ffff2f2c038 s4
0000555555820610
> s5
00007ffff2ed5000 s6
0000555555827e38 s7
00007ffffbf9fd00 s8
0000555555827e38
> ra:
00007ffff2d854fc
> ERA:
00005555558206a4
> CRMD:
000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)
> PRMD:
00000007 (PPLV3 +PIE -PWE)
> EUEN:
00000000 (-FPE -SXE -ASXE -BTE)
> ECFG:
0007181c (LIE=2-4,11-12 VS=7)
> ESTAT:
000a0000 [BCE] (IS= ECode=10 EsubCode=0)
> PRID:
0014c010 (Loongson-64bit, Loongson-3A5000)
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Xuerui [Mon, 1 May 2023 09:19:27 +0000 (17:19 +0800)]
LoongArch: Tweak the BADV and CPUCFG.PRID lines in show_regs()
Use ISA manual names for BADV and CPUCFG.PRID lines in show_regs(), for
stylistic consistency with the other lines already touched.
While at it, also include current CPU's full name in show_regs() output.
It may be more helpful for developers looking at the resulting dumps,
because multiple distinct CPU models may share the same PRID. Not having
this info available may hide problems only found on some but not all of
the models sharing one specific PRID.
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Xuerui [Mon, 1 May 2023 09:19:27 +0000 (17:19 +0800)]
LoongArch: Humanize the ESTAT line when showing registers
Example output looks like:
[ xx.xxxxxx] ESTAT:
00001000 [INT] (IS=12 ECode=0 EsubCode=0)
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Xuerui [Mon, 1 May 2023 09:19:27 +0000 (17:19 +0800)]
LoongArch: Humanize the ECFG line when showing registers
Example output looks like:
[ xx.xxxxxx] ECFG:
00071c1c (LIE=2-4,10-12 VS=7)
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Xuerui [Mon, 1 May 2023 09:19:27 +0000 (17:19 +0800)]
LoongArch: Humanize the EUEN line when showing registers
Example output looks like:
[ xx.xxxxxx] EUEN:
00000000 (-FPE -SXE -ASXE -BTE)
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Xuerui [Mon, 1 May 2023 09:19:10 +0000 (17:19 +0800)]
LoongArch: Humanize the PRMD line when showing registers
Example output looks like:
[ xx.xxxxxx] PRMD:
00000004 (PPLV0 +PIE -PWE)
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Xuerui [Mon, 1 May 2023 09:19:10 +0000 (17:19 +0800)]
LoongArch: Humanize the CRMD line when showing registers
Example output looks like:
[ xx.xxxxxx] CRMD:
000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)
Some initial machinery for this pretty-printing format has been included
in this patch as well.
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Xuerui [Mon, 1 May 2023 09:19:10 +0000 (17:19 +0800)]
LoongArch: Fix format of CSR lines during show_regs()
Use uppercase CSR names throughout for consistency with the manual
wording, and right-align the keys. The "CSR" part is inferrable from
context, hence dropped for more horizontal space.
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Xuerui [Mon, 1 May 2023 09:19:10 +0000 (17:19 +0800)]
LoongArch: Print symbol info for $ra and CSR.ERA only for kernel-mode contexts
Otherwise the addresses wouldn't make sense at all.
While at it, align the "map keys" to maintain right-alignment with the
"estat:" line too; also swap the ERA and ra lines so all CSRs are shown
together.
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Xuerui [Mon, 1 May 2023 09:19:10 +0000 (17:19 +0800)]
LoongArch: Print GPRs with ABI names when showing registers
Show PC (CSR.ERA) in place of $zero, and also show the syscall restart
flag (conveniently stuffed in regs[0]) if non-zero.
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Xuerui [Mon, 1 May 2023 09:19:10 +0000 (17:19 +0800)]
LoongArch: Define regular names for BCE/WATCH/HVC/GSPR exceptions
Define them according to the ISA manual, in order to enable matching the
sub-exceptions for humanization purposes later.
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
WANG Xuerui [Mon, 1 May 2023 09:19:10 +0000 (17:19 +0800)]
LoongArch: Clean up the architectural interrupt definitions
While interrupts are assigned ECodes `64 + interrupt number`, all
existing use sites of interrupt numbers want the 64 subtracted.
Re-arrange the definitions so that the actual interrupt number is used
everywhere, and make EXCCODE_INT_END inclusive as it is more intuitive
that way.
While at it, according to the asm/loongarch.h definitions, the total
number of architectural interrupts should be 14, but various other
places indicate otherwise (13 or 15). Those places have been adjusted
to 14 as well for consistency.
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Tom Rix [Sat, 29 Apr 2023 13:46:01 +0000 (09:46 -0400)]
i3c: ast2600: set variable ast2600_i3c_ops storage-class-specifier to static
smatch reports
drivers/i3c/master/ast2600-i3c-master.c:121:34: warning: symbol
'ast2600_i3c_ops' was not declared. Should it be static?
This variable is only used in its defining file, so it should be static.
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au>
Link: https://lore.kernel.org/r/20230429134601.2688558-1-trix@redhat.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Linus Torvalds [Sun, 30 Apr 2023 20:00:38 +0000 (13:00 -0700)]
Merge tag 'iommu-updates-v6.4' of git://git./linux/kernel/git/joro/iommu
Pull iommu updates from Joerg Roedel:
- Convert to platform remove callback returning void
- Extend changing default domain to normal group
- Intel VT-d updates:
- Remove VT-d virtual command interface and IOASID
- Allow the VT-d driver to support non-PRI IOPF
- Remove PASID supervisor request support
- Various small and misc cleanups
- ARM SMMU updates:
- Device-tree binding updates:
* Allow Qualcomm GPU SMMUs to accept relevant clock properties
* Document Qualcomm 8550 SoC as implementing an MMU-500
* Favour new "qcom,smmu-500" binding for Adreno SMMUs
- Fix S2CR quirk detection on non-architectural Qualcomm SMMU
implementations
- Acknowledge SMMUv3 PRI queue overflow when consuming events
- Document (in a comment) why ATS is disabled for bypass streams
- AMD IOMMU updates:
- 5-level page-table support
- NUMA awareness for memory allocations
- Unisoc driver: Support for reattaching an existing domain
- Rockchip driver: Add missing set_platform_dma_ops callback
- Mediatek driver: Adjust the dma-ranges
- Various other small fixes and cleanups
* tag 'iommu-updates-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (82 commits)
iommu: Remove iommu_group_get_by_id()
iommu: Make iommu_release_device() static
iommu/vt-d: Remove BUG_ON in dmar_insert_dev_scope()
iommu/vt-d: Remove a useless BUG_ON(dev->is_virtfn)
iommu/vt-d: Remove BUG_ON in map/unmap()
iommu/vt-d: Remove BUG_ON when domain->pgd is NULL
iommu/vt-d: Remove BUG_ON in handling iotlb cache invalidation
iommu/vt-d: Remove BUG_ON on checking valid pfn range
iommu/vt-d: Make size of operands same in bitwise operations
iommu/vt-d: Remove PASID supervisor request support
iommu/vt-d: Use non-privileged mode for all PASIDs
iommu/vt-d: Remove extern from function prototypes
iommu/vt-d: Do not use GFP_ATOMIC when not needed
iommu/vt-d: Remove unnecessary checks in iopf disabling path
iommu/vt-d: Move PRI handling to IOPF feature path
iommu/vt-d: Move pfsid and ats_qdep calculation to device probe path
iommu/vt-d: Move iopf code from SVA to IOPF enabling path
iommu/vt-d: Allow SVA with device-specific IOPF
dmaengine: idxd: Add enable/disable device IOPF feature
arm64: dts: mt8186: Add dma-ranges for the parent "soc" node
...
Linus Torvalds [Sun, 30 Apr 2023 18:51:51 +0000 (11:51 -0700)]
Merge tag 'cxl-for-6.4' of git://git./linux/kernel/git/cxl/cxl
Pull compute express link updates from Dan Williams:
"DOE support is promoted from drivers/cxl/ to drivers/pci/ with Bjorn's
blessing, and the CXL core continues to mature its media management
capabilities with support for listing and injecting media errors. Some
late fixes that missed v6.3-final are also included:
- Refactor the DOE infrastructure (Data Object Exchange
PCI-config-cycle mailbox) to be a facility of the PCI core rather
than the CXL core.
This is foundational for upcoming support for PCI
device-attestation and PCIe / CXL link encryption.
- Add support for retrieving and injecting poison for CXL memory
expanders.
This enabling uses trace-events to convey CXL media error records
to user tooling. It includes translation of device-local addresses
(DPA) to system physical addresses (SPA) and their corresponding
CXL region.
- Fixes for decoder enumeration that missed v6.3-final
- Miscellaneous fixups"
* tag 'cxl-for-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (38 commits)
cxl/test: Add mock test for set_timestamp
cxl/mbox: Update CMD_RC_TABLE
tools/testing/cxl: Require CONFIG_DEBUG_FS
tools/testing/cxl: Add a sysfs attr to test poison inject limits
tools/testing/cxl: Use injected poison for get poison list
tools/testing/cxl: Mock the Clear Poison mailbox command
tools/testing/cxl: Mock the Inject Poison mailbox command
cxl/mem: Add debugfs attributes for poison inject and clear
cxl/memdev: Trace inject and clear poison as cxl_poison events
cxl/memdev: Warn of poison inject or clear to a mapped region
cxl/memdev: Add support for the Clear Poison mailbox command
cxl/memdev: Add support for the Inject Poison mailbox command
tools/testing/cxl: Mock support for Get Poison List
cxl/trace: Add an HPA to cxl_poison trace events
cxl/region: Provide region info to the cxl_poison trace event
cxl/memdev: Add trigger_poison_list sysfs attribute
cxl/trace: Add TRACE support for CXL media-error records
cxl/mbox: Add GET_POISON_LIST mailbox command
cxl/mbox: Initialize the poison state
cxl/mbox: Restrict poison cmds to debugfs cxl_raw_allow_all
...
Linus Torvalds [Sun, 30 Apr 2023 18:43:31 +0000 (11:43 -0700)]
Merge tag 's390-6.4-1' of git://git./linux/kernel/git/s390/linux
Pull s390 updates from Vasily Gorbik:
- Add support for stackleak feature. Also allow specifying
architecture-specific stackleak poison function to enable faster
implementation. On s390, the mvc-based implementation helps decrease
typical overhead from a factor of 3 to just 25%
- Convert all assembler files to use SYM* style macros, deprecating the
ENTRY() macro and other annotations. Select ARCH_USE_SYM_ANNOTATIONS
- Improve KASLR to also randomize module and special amode31 code base
load addresses
- Rework decompressor memory tracking to support memory holes and
improve error handling
- Add support for protected virtualization AP binding
- Add support for set_direct_map() calls
- Implement set_memory_rox() and noexec module_alloc()
- Remove obsolete overriding of mem*() functions for KASAN
- Rework kexec/kdump to avoid using nodat_stack to call purgatory
- Convert the rest of the s390 code to use flexible-array member
instead of a zero-length array
- Clean up uaccess inline asm
- Enable ARCH_HAS_MEMBARRIER_SYNC_CORE
- Convert to using CONFIG_FUNCTION_ALIGNMENT and enable
DEBUG_FORCE_FUNCTION_ALIGN_64B
- Resolve last_break in userspace fault reports
- Simplify one-level sysctl registration
- Clean up branch prediction handling
- Rework CPU counter facility to retrieve available counter sets just
once
- Other various small fixes and improvements all over the code
* tag 's390-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (118 commits)
s390/stackleak: provide fast __stackleak_poison() implementation
stackleak: allow to specify arch specific stackleak poison function
s390: select ARCH_USE_SYM_ANNOTATIONS
s390/mm: use VM_FLUSH_RESET_PERMS in module_alloc()
s390: wire up memfd_secret system call
s390/mm: enable ARCH_HAS_SET_DIRECT_MAP
s390/mm: use BIT macro to generate SET_MEMORY bit masks
s390/relocate_kernel: adjust indentation
s390/relocate_kernel: use SYM* macros instead of ENTRY(), etc.
s390/entry: use SYM* macros instead of ENTRY(), etc.
s390/purgatory: use SYM* macros instead of ENTRY(), etc.
s390/kprobes: use SYM* macros instead of ENTRY(), etc.
s390/reipl: use SYM* macros instead of ENTRY(), etc.
s390/head64: use SYM* macros instead of ENTRY(), etc.
s390/earlypgm: use SYM* macros instead of ENTRY(), etc.
s390/mcount: use SYM* macros instead of ENTRY(), etc.
s390/crc32le: use SYM* macros instead of ENTRY(), etc.
s390/crc32be: use SYM* macros instead of ENTRY(), etc.
s390/crypto,chacha: use SYM* macros instead of ENTRY(), etc.
s390/amode31: use SYM* macros instead of ENTRY(), etc.
...
Linus Torvalds [Sun, 30 Apr 2023 18:32:53 +0000 (11:32 -0700)]
Merge tag 'kbuild-v6.4' of git://git./linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Refactor scripts/kallsyms to make it faster and easier to maintain
- Clean up menuconfig
- Provide Clang with hard-coded target triple instead of CROSS_COMPILE
- Use -z pack-relative-relocs flags instead of --use-android-relr-tags
for arm64 CONFIG_RELR
- Add srcdeb-pkg target to build only a Debian source package
- Add KDEB_SOURCE_COMPRESS option to specify the compression for a
Debian source package
- Misc cleanups and fixes
* tag 'kbuild-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: deb-pkg: specify targets in debian/rules as .PHONY
sparc: unify sparc32/sparc64 archhelp
kbuild: rpm-pkg: remove kernel-drm PROVIDES
kbuild: deb-pkg: add KDEB_SOURCE_COMPRESS to specify source compression
kbuild: add srcdeb-pkg target
Makefile: use -z pack-relative-relocs
kbuild: clang: do not use CROSS_COMPILE for target triple
kconfig: menuconfig: reorder functions to remove forward declarations
kconfig: menuconfig: remove unused M_EVENT macro
kconfig: menuconfig: remove OLD_NCURSES macro
kbuild: builddeb: Eliminate debian/arch use
scripts/kallsyms: update the usage in the comment block
scripts/kallsyms: decrease expand_symbol() / cleanup_symbol_name() calls
scripts/kallsyms: change the output order
scripts/kallsyms: move compiler-generated symbol patterns to mksysmap
scripts/kallsyms: exclude symbols generated by itself dynamically
scripts/mksysmap: use sed with in-line comments
scripts/mksysmap: remove comments described in nm(1)
scripts/kallsyms: remove redundant code for omitting U and N
kallsyms: expand symbol name into comment for debugging
Linus Torvalds [Sun, 30 Apr 2023 18:20:22 +0000 (11:20 -0700)]
Merge tag 'rust-6.4' of https://github.com/Rust-for-Linux/linux
Pull rust updates from Miguel Ojeda
"More additions to the Rust core. Importantly, this adds the pin-init
API, which will be used by other abstractions, such as the
synchronization ones added here too:
- pin-init API: a solution for the safe pinned initialization
problem.
This allows to reduce the need for 'unsafe' code in the kernel when
dealing with data structures that require a stable address. Commit
90e53c5e70a6 ("rust: add pin-init API core") contains a nice
introduction -- here is an example of how it looks like:
#[pin_data]
struct Example {
#[pin]
value: Mutex<u32>,
#[pin]
value_changed: CondVar,
}
impl Example {
fn new() -> impl PinInit<Self> {
pin_init!(Self {
value <- new_mutex!(0),
value_changed <- new_condvar!(),
})
}
}
// In a `Box`.
let b = Box::pin_init(Example::new())?;
// In the stack.
stack_pin_init!(let s = Example::new());
- 'sync' module:
New types 'LockClassKey' ('struct lock_class_key'), 'Lock',
'Guard', 'Mutex' ('struct mutex'), 'SpinLock' ('spinlock_t'),
'LockedBy' and 'CondVar' (uses 'wait_queue_head_t'), plus macros
such as 'static_lock_class!' and 'new_spinlock!'.
In particular, 'Lock' and 'Guard' are generic implementations that
contain code that is common to all locks. Then, different backends
(the new 'Backend' trait) are implemented and used to define types
like 'Mutex':
type Mutex<T> = Lock<T, MutexBackend>;
In addition, new methods 'assume_init()', 'init_with()' and
'pin_init_with()' for 'UniqueArc<MaybeUninit<T>>' and 'downcast()'
for 'Arc<dyn Any + Send + Sync>'; as well as 'Debug' and 'Display'
implementations for 'Arc' and 'UniqueArc'. Reduced stack usage of
'UniqueArc::try_new_uninit()', too.
- 'types' module:
New trait 'AlwaysRefCounted' and new type 'ARef' (an owned
reference to an always-reference-counted object, meant to be used
in wrappers for C types that have their own ref counting
functions).
Moreover, new associated functions 'raw_get()' and 'ffi_init()' for
'Opaque'.
- New 'task' module with a new type 'Task' ('struct task_struct'),
and a new macro 'current!' to safely get a reference to the current
one.
- New 'ioctl' module with new '_IOC*' const functions (equivalent to
the C macros).
- New 'uapi' crate, intended to be accessible by drivers directly.
- 'macros' crate: new 'quote!' macro (similar to the one provided in
userspace by the 'quote' crate); and the 'module!' macro now allows
specifying multiple module aliases.
- 'error' module:
New associated functions for the 'Error' type, such as
'from_errno()' and new functions such as 'to_result()'.
- 'alloc' crate:
More fallible 'Vec' methods: 'try_resize` and
'try_extend_from_slice' and the infrastructure (imported from the
Rust standard library) they need"
* tag 'rust-6.4' of https://github.com/Rust-for-Linux/linux: (44 commits)
rust: ioctl: Add ioctl number manipulation functions
rust: uapi: Add UAPI crate
rust: sync: introduce `CondVar`
rust: lock: add `Guard::do_unlocked`
rust: sync: introduce `LockedBy`
rust: introduce `current`
rust: add basic `Task`
rust: introduce `ARef`
rust: lock: introduce `SpinLock`
rust: lock: introduce `Mutex`
rust: sync: introduce `Lock` and `Guard`
rust: sync: introduce `LockClassKey`
MAINTAINERS: add Benno Lossin as Rust reviewer
rust: init: broaden the blanket impl of `Init`
rust: sync: add functions for initializing `UniqueArc<MaybeUninit<T>>`
rust: sync: reduce stack usage of `UniqueArc::try_new_uninit`
rust: types: add `Opaque::ffi_init`
rust: prelude: add `pin-init` API items to prelude
rust: init: add `Zeroable` trait and `init::zeroed` function
rust: init: add `stack_pin_init!` macro
...
Christophe JAILLET [Thu, 27 Apr 2023 18:05:42 +0000 (20:05 +0200)]
ceph: reorder fields in 'struct ceph_snapid_map'
Group some variables based on their sizes to reduce holes.
On x86_64, this shrinks the size of 'struct ceph_snapid_map' from 72 to 64
bytes.
When such a structure is allocated, because of the way memory allocation
works, when 72 bytes were requested, 96 bytes were allocated.
So, on x86_64, this change saves 32 bytes per allocation and has the
structure fit in a single cacheline.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Xiubo Li [Wed, 26 Apr 2023 02:38:57 +0000 (10:38 +0800)]
ceph: pass ino# instead of old_dentry if it's disconnected
When exporting the kceph to NFS it may pass a DCACHE_DISCONNECTED
dentry for the link operation. Then it will parse this dentry as a
snapdir, and the mds will fail the link request as -EROFS.
MDS allow clients to pass a ino# instead of a path.
Link: https://tracker.ceph.com/issues/59515
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Xiubo Li [Wed, 19 Apr 2023 02:39:14 +0000 (10:39 +0800)]
ceph: fix potential use-after-free bug when trimming caps
When trimming the caps and just after the 'session->s_cap_lock' is
released in ceph_iterate_session_caps() the cap maybe removed by
another thread, and when using the stale cap memory in the callbacks
it will trigger use-after-free crash.
We need to check the existence of the cap just after the 'ci->i_ceph_lock'
being acquired. And do nothing if it's already removed.
Cc: stable@vger.kernel.org
Link: https://tracker.ceph.com/issues/43272
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Luís Henriques <lhenriques@suse.de>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Xiubo Li [Wed, 8 Mar 2023 02:21:44 +0000 (10:21 +0800)]
ceph: implement writeback livelock avoidance using page tagging
While the mapped IOs continue if we try to flush a file's buffer
we can see that the fsync() won't complete until the IOs finish.
This is analogous to Jan Kara's commit (
f446daaea9d4 mm: implement
writeback livelock avoidance using page tagging), we will try to
avoid livelocks of writeback when some steadily creates dirty pages
in a mapping we are writing out.
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Xiubo Li [Tue, 28 Feb 2023 12:40:51 +0000 (20:40 +0800)]
ceph: do not print the whole xattr value if it's too long
If the xattr's value size is long enough the kernel will warn and
then will fail the xfstests test case.
Just print part of the value string if it's too long.
At the same time fix the function name issue in the debug logs.
Link: https://tracker.ceph.com/issues/58404
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Akhil R [Thu, 27 Apr 2023 12:39:14 +0000 (18:09 +0530)]
i2c: tegra: Fix PEC support for SMBUS block read
Update the msg->len value correctly for SMBUS block read. The discrepancy
went unnoticed as msg->len is used in SMBUS transfers only when a PEC
byte is added.
Fixes: d7583c8a5748 ("i2c: tegra: Add SMBus block read function")
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Linus Torvalds [Sun, 30 Apr 2023 00:42:33 +0000 (17:42 -0700)]
Merge tag 'efi-next-for-v6.4' of git://git./linux/kernel/git/efi/efi
Pull EFI updates from Ard Biesheuvel:
- relocate the LoongArch kernel if the preferred address is already
occupied
- implement BTI annotations for arm64 EFI stub and zboot images
- clean up arm64 zboot Kbuild rules for injecting the kernel code size
* tag 'efi-next-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi/zboot: arm64: Grab code size from ELF symbol in payload
efi/zboot: arm64: Inject kernel code size symbol into the zboot payload
efi/zboot: Set forward edge CFI compat header flag if supported
efi/zboot: Add BSS padding before compression
arm64: efi: Enable BTI codegen and add PE/COFF annotation
efi/pe: Import new BTI/IBT header flags from the spec
efi/loongarch: Reintroduce efi_relocate_kernel() to relocate kernel
Linus Torvalds [Sun, 30 Apr 2023 00:37:02 +0000 (17:37 -0700)]
Merge tag 'for-v6.4' of git://git./linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
- power-supply core support for automatic handling of constant battery
data supplied by firmware
- generic-adc-battery: major cleanup
- axp288_charger: fix ACPI issues on x86 Android tablets
- rk817: cleanup and fix handling for low state of charge
* tag 'for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (26 commits)
power: supply: rk817: Fix low SOC bugs
power: supply: rk817: Drop unneeded debugging code
power: supply: axp288_charger: Use alt usb-id extcon on some x86 android tablets
power: supply: generic-adc-battery: style fixes
power: supply: generic-adc-battery: improve error message
power: supply: generic-adc-battery: update copyright info
power: supply: generic-adc-battery: add DT support
power: supply: generic-adc-battery: add temperature support
power: supply: generic-adc-battery: simplify read_channel logic
power: supply: generic-adc-battery: use simple-battery API
power: supply: generic-adc-battery: drop memory alloc error message
power: supply: generic-adc-battery: drop charge now support
power: supply: generic-adc-battery: drop jitter delay support
power: supply: generic-adc-battery: fix unit scaling
power: supply: generic-adc-battery: convert to managed resources
power: supply: core: auto-exposure of simple-battery data
dt-bindings: power: supply: adc-battery: add binding
power: supply: bq256xx: Support to disable charger
power: supply: charger-manager: Use of_property_read_bool() for boolean properties
power: reset: qcom-pon: drop of_match_ptr for ID table
...
Linus Torvalds [Sun, 30 Apr 2023 00:29:39 +0000 (17:29 -0700)]
Merge tag 'clk-for-linus' of git://git./linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"Nothing looks out of the ordinary in this batch of clk driver updates.
There are a couple patches to the core clk framework, but they're all
basically cleanups or debugging aids. The driver updates and new
additions are dominated in the diffstat by Qualcomm and MediaTek
drivers. Qualcomm gained a handful of new drivers for various SoCs,
and MediaTek gained a bunch of drivers for MT8188. The MediaTek
drivers are being modernized as well, so there are updates all over
that vendor's clk drivers. There's also a couple other new clk drivers
in here, for example the Starfive JH7110 SoC support is added.
Outside of the two major SoC vendors though, we have the usual
collection of non-critical fixes and cleanups to various clk drivers.
It's good to see that we're getting more cleanups and modernization
patches. Maybe one day we'll be able to properly split clk providers
from clk consumers.
Core:
- Print an informational message before disabling unused clks
New Drivers:
- BCM63268 timer clock and reset controller
- Frequency Hopping (FHCTL) on MediaTek MT6795, MT8173, MT8192 and
MT8195 SoCs
- Mediatek MT8188 SoC clk drivers
- Clock driver for Sunplus SP7021 SoC
- Clk driver support for Loongson-2 SoCs
- Clock driver for Skyworks Si521xx I2C PCIe clock generators
- Initial Starfive JH7110 clk/reset support
- Global clock controller drivers for Qualcomm SM7150, IPQ9574,
MSM8917 and IPQ5332 SoCs
- GPU clock controller drivers for SM6115, SM6125, SM6375 and SA8775P
SoCs
Updates:
- Shrink size of clk_fractional_divider a little
- Convert various clk drivers to devm_of_clk_add_hw_provider()
- Convert platform clk drivers to remove_new()
- Converted most Mediatek clock drivers to struct platform_driver
- MediaTek clock drivers can be built as modules
- Reimplement Loongson-1 clk driver with DT support
- Migrate socfpga clk driver to of_clk_add_hw_provider()
- Support for i3c clks on Aspeed ast2600 SoCs
- Add clock generic devm_clk_hw_register_gate_parent_data
- Add audiomix block control for i.MX8MP
- Add support for determine_rate to i.MX composite-8m
- Let the LCDIF Pixel clock of i.MX8MM and i.MX8MN set parent rate
- Provide clock name in error message for clk-gpr-mux on get parent
failure
- Drop duplicate imx_clk_mux_flags macro
- Register the i.MX8MP Media Disp2 Pix clock as bus clock
- Add Media LDB root clock to i.MX8MP
- Make i.MX8MP nand_usdhc_bus clock as non-critical
- Fix the rate table for i.MX fracn-gppll
- Disable HW control for the fracn-gppll in order to be controlled by
register write
- Add support for interger PLL in fracn-gppll
- Add mcore_booted module parameter to i.MX93 provider
- Add NIC, A55 and ARM PLL clocks to i.MX93
- Fix i.MX8ULP XBAR_DIVBUS and AD_SLOW clock parents
- Use "divider closest" clock type for PLL4_PFD dividers on i.MX8ULP
to get more accurate clock rates
- Mark the MU0_Bi and TPM5 clocks on i.MX8ULP as critical
- Update some of the i.MX critical clocks flags to allow glitchless
on-the-fly rate change.
- Add I2C5 clock on Renesas R-Car V3H
- Exynos850: Add CMU_G3D clock controller for the Mali GPU
- Extract Exynos5433 (ARM64) clock controller power management code
to common driver parts
- Exynos850: make PMU_ALIVE_PCLK clock critical
- Add Audio, thermal, camera (CSI-2), Image Signal Processor/Channel
Selector (ISPCS), and video capture (VIN) clocks on Renesas R-Car
V4H
- Add video capture (VIN) clocks on Renesas R-Car V3H
- Add Cortex-A53 System CPU (Z2) clocks on Renesas R-Car V3M and V3H
- Support for Stromer Plus PLL on Qualcomm IPQ5332
- Add a missing reset to Qualcomm QCM2290
- Migrate Qualcomm IPQ4019 to clk_parent_data
- Make USB GDSCs enter retention state when disabled on Qualcomm
SM6375, MSM8996 and MSM8998 SoCs
- Set floor rounding clk_ops for Qualcomm QCM2290 SDCC2 clk
- Add two EMAC GDSCs on Qualcomm SC8280XP
- Use shared rcg clk ops in Qualcomm SM6115 GCC
- Park Qualcomm SM8350 PCIe PIPE clks when disabled
- Add GDSCs to Qualcomm SC7280 LPASS audio clock controller
- Add missing XO clocks to Qualcomm MSM8226 and MSM8974
- Convert some Qualcomm clk DT bindings to YAML
- Reparenting fix for the clock supplying camera modules on Rockchip
rk3399
- Mark more critical (bus-)clocks on Rockchip rk3588"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (290 commits)
clk: qcom: gcc-sc8280xp: Add EMAC GDSCs
clk: starfive: Delete the redundant dev_set_drvdata() in JH7110 clock drivers
clk: rockchip: rk3588: make gate linked clocks critical
clk: qcom: dispcc-qcm2290: Remove inexistent DSI1PHY clk
clk: qcom: add the GPUCC driver for sa8775p
dt-bindings: clock: qcom: describe the GPUCC clock for SA8775P
clk: qcom: gcc-sm8350: fix PCIe PIPE clocks handling
clk: qcom: lpassaudiocc-sc7280: Add required gdsc power domain clks in lpass_cc_sc7280_desc
clk: qcom: lpasscc-sc7280: Skip qdsp6ss clock registration
dt-bindings: clock: qcom,sc7280-lpasscc: Add qcom,adsp-pil-mode property
clk: starfive: Avoid casting iomem pointers
clk: microchip: fix potential UAF in auxdev release callback
clk: qcom: rpm: Use managed `of_clk_add_hw_provider()`
clk: mediatek: fhctl: Mark local variables static
clk: sifive: make SiFive clk drivers depend on ARCH_ symbols
clk: uniphier: Use managed `of_clk_add_hw_provider()`
clk: si5351: Use managed `of_clk_add_hw_provider()`
clk: si570: Use managed `of_clk_add_hw_provider()`
clk: si514: Use managed `of_clk_add_hw_provider()`
clk: lmk04832: Use managed `of_clk_add_hw_provider()`
...
Linus Torvalds [Sun, 30 Apr 2023 00:21:24 +0000 (17:21 -0700)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"Usual wide collection of unrelated items in drivers:
- Driver bug fixes and treewide cleanups in hfi1, siw, qib, mlx5,
rxe, usnic, usnic, bnxt_re, ocrdma, iser:
- remove unnecessary NULL checks
- kmap obsolescence
- pci_enable_pcie_error_reporting() obsolescence
- unused variables and macros
- trace event related warnings
- casting warnings
- Code cleanups for irdm and erdma
- EFA reporting of 128 byte PCIe TLP support
- mlx5 more agressively uses the out of order HW feature
- Big rework of how state machines and tasks work in rxe
- Fix a syzkaller found crash netdev refcount leak in siw
- bnxt_re revises their HW description header
- Congestion control for bnxt_re
- Use mmu_notifiers more safely in hfi1
- mlx5 gets better support for PCIe relaxed ordering inside VMs"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (81 commits)
RDMA/efa: Add rdma write capability to device caps
RDMA/mlx5: Use correct device num_ports when modify DC
RDMA/irdma: Drop spurious WQ_UNBOUND from alloc_ordered_workqueue() call
RDMA/rxe: Fix spinlock recursion deadlock on requester
RDMA/mlx5: Fix flow counter query via DEVX
RDMA/rxe: Protect QP state with qp->state_lock
RDMA/rxe: Move code to check if drained to subroutine
RDMA/rxe: Remove qp->req.state
RDMA/rxe: Remove qp->comp.state
RDMA/rxe: Remove qp->resp.state
RDMA/mlx5: Allow relaxed ordering read in VFs and VMs
net/mlx5: Update relaxed ordering read HCA capabilities
RDMA/mlx5: Check pcie_relaxed_ordering_enabled() in UMR
RDMA/mlx5: Remove pcie_relaxed_ordering_enabled() check for RO write
RDMA: Add ib_virt_dma_to_page()
RDMA/rxe: Fix the error "trying to register non-static key in rxe_cleanup_task"
RDMA/irdma: Slightly optimize irdma_form_ah_cm_frame()
RDMA/rxe: Fix incorrect TASKLET_STATE_SCHED check in rxe_task.c
IB/hfi1: Place struct mmu_rb_handler on cache line start
IB/hfi1: Fix bugs with non-PAGE_SIZE-end multi-iovec user SDMA requests
...
Conor Dooley [Sat, 29 Apr 2023 09:27:33 +0000 (10:27 +0100)]
RISC-V: fixup in-flight collision with ARCH_WANT_OPTIMIZE_VMEMMAP rename
Lukas warned that ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP had been
renamed in the mm tree & that RISC-V would need a fixup as part of the
merge. The warning was missed however, and RISC-V is selecting the
orphaned Kconfig option.
Fixes: 89d77f71f493 ("Merge tag 'riscv-for-linus-6.4-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux")
Reported-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>.
Link: https://lore.kernel.org/linux-riscv/CAKXUXMyVeg2kQK_edKHtMD3eADrDK_PKhCSVkMrLDdYgTQQ5rg@mail.gmail.com/
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Link: https://lore.kernel.org/r/20230429-trilogy-jolly-12bf5c53d62d@spud
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Randy Dunlap [Sat, 29 Apr 2023 15:52:47 +0000 (08:52 -0700)]
RISC-V: fix sifive and thead section mismatches in errata
When CONFIG_MODULES is set, __init_or_module becomes <empty>, but when
CONFIG_MODULES is not set, __init_or_module becomes __init.
In the latter case, it causes section mismatch warnings:
WARNING: modpost: vmlinux.o: section mismatch in reference: riscv_fill_cpu_mfr_info (section: .text) -> sifive_errata_patch_func (section: .init.text)
WARNING: modpost: vmlinux.o: section mismatch in reference: riscv_fill_cpu_mfr_info (section: .text) -> thead_errata_patch_func (section: .init.text)
Fixes: bb3f89487fd9 ("RISC-V: hwprobe: Remove __init on probe_vendor_features()")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Evan Green <evan@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230429155247.12131-1-rdunlap@infradead.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Andrew Jones [Thu, 27 Apr 2023 16:36:26 +0000 (18:36 +0200)]
RISC-V: Align SBI probe implementation with spec
sbi_probe_extension() is specified with "Returns 0 if the given SBI
extension ID (EID) is not available, or 1 if it is available unless
defined as any other non-zero value by the implementation."
Additionally, sbiret.value is a long. Fix the implementation to
ensure any nonzero long value is considered a success, rather
than only positive int values.
Fixes: b9dcd9e41587 ("RISC-V: Add basic support for SBI v0.2")
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230427163626.101042-1-ajones@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Song Shuai [Wed, 26 Apr 2023 10:00:09 +0000 (18:00 +0800)]
riscv: mm: remove redundant parameter of create_fdt_early_page_table
create_fdt_early_page_table() explicitly uses early_pg_dir for
32-bit fdt mapping and the pgdir parameter is redundant here.
So remove it and its caller.
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Song Shuai <suagrfillet@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Fixes: ef69d2559fe9 ("riscv: Move early dtb mapping into the fixmap region")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230426100009.685435-1-suagrfillet@gmail.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Palmer Dabbelt [Sat, 29 Apr 2023 18:25:15 +0000 (11:25 -0700)]
Merge patch series "RISC-V Hibernation Support"
Sia Jee Heng <jeeheng.sia@starfivetech.com> says:
This series adds RISC-V Hibernation/suspend to disk support.
Low level Arch functions were created to support hibernation.
swsusp_arch_suspend() relies code from __cpu_suspend_enter() to write
cpu state onto the stack, then calling swsusp_save() to save the memory
image.
Arch specific hibernation header is implemented and is utilized by the
arch_hibernation_header_restore() and arch_hibernation_header_save()
functions. The arch specific hibernation header consists of satp, hartid,
and the cpu_resume address. The kernel built version is also need to be
saved into the hibernation image header to making sure only the same
kernel is restore when resume.
swsusp_arch_resume() creates a temporary page table that covering only
the linear map. It copies the restore code to a 'safe' page, then start to
restore the memory image. Once completed, it restores the original
kernel's page table. It then calls into __hibernate_cpu_resume()
to restore the CPU context. Finally, it follows the normal hibernation
path back to the hibernation core.
To enable hibernation/suspend to disk into RISCV, the below config
need to be enabled:
- CONFIG_HIBERNATION
- CONFIG_ARCH_HIBERNATION_HEADER
- CONFIG_ARCH_HIBERNATION_POSSIBLE
At high-level, this series includes the following changes:
1) Change suspend_save_csrs() and suspend_restore_csrs()
to public function as these functions are common to
suspend/hibernation. (patch 1)
2) Refactor the common code in the __cpu_resume_enter() function and
__hibernate_cpu_resume() function. The common code are used by
hibernation and suspend. (patch 2)
3) Enhance kernel_page_present() function to support huge page. (patch 3)
4) Add arch/riscv low level functions to support
hibernation/suspend to disk. (patch 4)
* b4-shazam-merge:
RISC-V: Add arch functions to support hibernation/suspend-to-disk
RISC-V: mm: Enable huge page support to kernel_page_present() function
RISC-V: Factor out common code of __cpu_resume_enter()
RISC-V: Change suspend_save_csrs and suspend_restore_csrs to public function
Link: https://lore.kernel.org/r/20230330064321.1008373-1-jeeheng.sia@starfivetech.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Nathan Chancellor [Tue, 4 Apr 2023 20:34:21 +0000 (13:34 -0700)]
riscv: Adjust dependencies of HAVE_DYNAMIC_FTRACE selection
When building allmodconfig with clang and its integrated assembler and
linking with a version of GNU ld prior to 2.36, the following link error
occurs:
riscv64-linux-gnu-ld: .init.data has both ordered [`__patchable_function_entries' in init/main.o] and unordered [`.init_array.0' in kernel/trace/trace_benchmark.o] sections
riscv64-linux-gnu-ld: final link failed: bad value
This is the same error addressed by commit
45bd8951806e ("arm64: Improve
HAVE_DYNAMIC_FTRACE_WITH_REGS selection for clang") for arm64. See that
changelog for a full description of why this error occurs with this
combination of tools.
In a similar manner as that change, restrict the
CONFIG_HAVE_DYNAMIC_FTRACE selection to combinations of tools known to
work so that there are no errors.
Link: https://github.com/ClangBuiltLinux/linux/issues/1817
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230404-riscv-dynamic-ftrace-checks-clang-v1-1-0ce296b7d423@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Sia Jee Heng [Thu, 30 Mar 2023 06:43:21 +0000 (14:43 +0800)]
RISC-V: Add arch functions to support hibernation/suspend-to-disk
Low level Arch functions were created to support hibernation.
swsusp_arch_suspend() relies code from __cpu_suspend_enter() to write
cpu state onto the stack, then calling swsusp_save() to save the memory
image.
Arch specific hibernation header is implemented and is utilized by the
arch_hibernation_header_restore() and arch_hibernation_header_save()
functions. The arch specific hibernation header consists of satp, hartid,
and the cpu_resume address. The kernel built version is also need to be
saved into the hibernation image header to making sure only the same
kernel is restore when resume.
swsusp_arch_resume() creates a temporary page table that covering only
the linear map. It copies the restore code to a 'safe' page, then start
to restore the memory image. Once completed, it restores the original
kernel's page table. It then calls into __hibernate_cpu_resume()
to restore the CPU context. Finally, it follows the normal hibernation
path back to the hibernation core.
To enable hibernation/suspend to disk into RISCV, the below config
need to be enabled:
- CONFIG_HIBERNATION
- CONFIG_ARCH_HIBERNATION_HEADER
- CONFIG_ARCH_HIBERNATION_POSSIBLE
Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
Reviewed-by: Ley Foon Tan <leyfoon.tan@starfivetech.com>
Reviewed-by: Mason Huo <mason.huo@starfivetech.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20230330064321.1008373-5-jeeheng.sia@starfivetech.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Sia Jee Heng [Thu, 30 Mar 2023 06:43:20 +0000 (14:43 +0800)]
RISC-V: mm: Enable huge page support to kernel_page_present() function
Currently kernel_page_present() function doesn't support huge page
detection causes the function to mistakenly return false to the
hibernation core.
Add huge page detection to the function to solve the problem.
Fixes: 9e953cda5cdf ("riscv: Introduce huge page support for 32/64bit kernel")
Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
Reviewed-by: Ley Foon Tan <leyfoon.tan@starfivetech.com>
Reviewed-by: Mason Huo <mason.huo@starfivetech.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20230330064321.1008373-4-jeeheng.sia@starfivetech.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Sia Jee Heng [Thu, 30 Mar 2023 06:43:19 +0000 (14:43 +0800)]
RISC-V: Factor out common code of __cpu_resume_enter()
The cpu_resume() function is very similar for the suspend to disk and
suspend to ram cases. Factor out the common code into suspend_restore_csrs
macro and suspend_restore_regs macro.
Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230330064321.1008373-3-jeeheng.sia@starfivetech.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Sia Jee Heng [Thu, 30 Mar 2023 06:43:18 +0000 (14:43 +0800)]
RISC-V: Change suspend_save_csrs and suspend_restore_csrs to public function
Currently suspend_save_csrs() and suspend_restore_csrs() functions are
statically defined in the suspend.c. Change the function's attribute
to public so that the functions can be used by hibernation as well.
Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
Reviewed-by: Ley Foon Tan <leyfoon.tan@starfivetech.com>
Reviewed-by: Mason Huo <mason.huo@starfivetech.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20230330064321.1008373-2-jeeheng.sia@starfivetech.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Linus Torvalds [Sat, 29 Apr 2023 18:10:39 +0000 (11:10 -0700)]
Merge tag '6.4-rc-ksmbd-server-fixes' of git://git.samba.org/ksmbd
Pull ksmbd server updates from Steve French:
- SMB3.1.1 negotiate context fixes and cleanup
- new lock_rename_child VFS helper
- ksmbd fix to avoid unlink race and to use the new VFS helper to avoid
rename race
* tag '6.4-rc-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
ksmbd: fix racy issue from using ->d_parent and ->d_name
ksmbd: remove unused compression negotiate ctx packing
ksmbd: avoid duplicate negotiate ctx offset increments
ksmbd: set NegotiateContextCount once instead of every inc
fs: introduce lock_rename_child() helper
ksmbd: remove internal.h include
Linus Torvalds [Sat, 29 Apr 2023 18:04:14 +0000 (11:04 -0700)]
Merge tag 'nfsd-6.4' of git://git./linux/kernel/git/cel/linux
Pull nfsd updates from Chuck Lever:
"The big ticket item for this release is that support for RPC-with-TLS
[RFC 9289] has been added to the Linux NFS server.
The goal is to provide a simple-to-deploy, low-overhead in-transit
confidentiality and peer authentication mechanism. It can supplement
NFS Kerberos and it can protect the use of legacy non-cryptographic
user authentication flavors such as AUTH_SYS. The TLS Record protocol
is handled entirely by kTLS, meaning it can use either software
encryption or offload encryption to smart NICs.
Aside from that, work continues on improving NFSD's open file cache.
Among the many clean-ups in that area is a patch to convert the
rhashtable to use the list-hashing version of that data structure"
* tag 'nfsd-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (31 commits)
NFSD: Handle new xprtsec= export option
SUNRPC: Support TLS handshake in the server-side TCP socket code
NFSD: Clean up xattr memory allocation flags
NFSD: Fix problem of COMMIT and NFS4ERR_DELAY in infinite loop
SUNRPC: Clear rq_xid when receiving a new RPC Call
SUNRPC: Recognize control messages in server-side TCP socket code
SUNRPC: Be even lazier about releasing pages
SUNRPC: Convert svc_xprt_release() to the release_pages() API
SUNRPC: Relocate svc_free_res_pages()
nfsd: simplify the delayed disposal list code
SUNRPC: Ignore return value of ->xpo_sendto
SUNRPC: Ensure server-side sockets have a sock->file
NFSD: Watch for rq_pages bounds checking errors in nfsd_splice_actor()
sunrpc: simplify two-level sysctl registration for svcrdma_parm_table
SUNRPC: return proper error from get_expiry()
lockd: add some client-side tracepoints
nfs: move nfs_fhandle_hash to common include file
lockd: server should unlock lock if client rejects the grant
lockd: fix races in client GRANTED_MSG wait logic
lockd: move struct nlm_wait to lockd.h
...
Linus Torvalds [Sat, 29 Apr 2023 17:58:44 +0000 (10:58 -0700)]
Merge tag 'nfs-for-6.4-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client updates from Anna Schumaker:
"New Features:
- Convert the readdir path to use folios
- Convert the NFS fscache code to use netfs
Bugfixes and Cleanups:
- Always send a RECLAIM_COMPLETE after establishing a lease
- Simplify sysctl registrations and other cleanups
- Handle out-of-order write replies on NFS v3
- Have sunrpc call_bind_status use standard hard/soft task semantics
- Other minor cleanups"
* tag 'nfs-for-6.4-1' of git://git.linux-nfs.org/projects/anna/linux-nfs:
NFSv4.2: Rework scratch handling for READ_PLUS
NFS: Cleanup unused rpc_clnt variable
NFS: set varaiable nfs_netfs_debug_id storage-class-specifier to static
SUNRPC: remove the maximum number of retries in call_bind_status
NFS: Convert readdir page array functions to use a folio
NFS: Convert the readdir array-of-pages into an array-of-folios
NFSv3: handle out-of-order write replies.
NFS: Remove fscache specific trace points and NFS_INO_FSCACHE bit
NFS: Remove all NFSIOS_FSCACHE counters due to conversion to netfs API
NFS: Convert buffered read paths to use netfs when fscache is enabled
NFS: Configure support for netfs when NFS fscache is configured
NFS: Rename readpage_async_filler to nfs_read_add_folio
sunrpc: simplify one-level sysctl registration for debug_table
sunrpc: move sunrpc_table and proc routines above
sunrpc: simplify one-level sysctl registration for xs_tunables_table
sunrpc: simplify one-level sysctl registration for xr_tunables_table
nfs: simplify two-level sysctl registration for nfs_cb_sysctls
nfs: simplify two-level sysctl registration for nfs4_cb_sysctls
lockd: simplify two-level sysctl registration for nlm_sysctls
NFSv4.1: Always send a RECLAIM_COMPLETE after establishing lease
Linus Torvalds [Sat, 29 Apr 2023 17:52:37 +0000 (10:52 -0700)]
Merge tag 'ntfs3_for_6.4' of https://github.com/Paragon-Software-Group/linux-ntfs3
Pull ntfs3 updates from Konstantin Komarov:
"New code:
- add missed "nocase" in ntfs_show_options
- extend information on failures/errors
- small optimizations
Fixes:
- some logic errors
- some dead code was removed
- code is refactored and reformatted according to the new version of
clang-format
Code removal:
- 'noacsrules' option.
Currently, this option does not work properly, and its use leads to
unstable results. If we figure out how to implement it without
errors, we will add it later
- writepage"
* tag 'ntfs3_for_6.4' of https://github.com/Paragon-Software-Group/linux-ntfs3: (30 commits)
fs/ntfs3: Fix root inode checking
fs/ntfs3: Print details about mount fails
fs/ntfs3: Add missed "nocase" in ntfs_show_options
fs/ntfs3: Code formatting and refactoring
fs/ntfs3: Changed ntfs_get_acl() to use dentry
fs/ntfs3: Remove field sbi->used.bitmap.set_tail
fs/ntfs3: Undo critial modificatins to keep directory consistency
fs/ntfs3: Undo endian changes
fs/ntfs3: Optimization in ntfs_set_state()
fs/ntfs3: Fix ntfs_create_inode()
fs/ntfs3: Remove noacsrules
fs/ntfs3: Use bh_read to simplify code
fs/ntfs3: Fix a possible null-pointer dereference in ni_clear()
fs/ntfs3: Refactoring of various minor issues
fs/ntfs3: Restore overflow checking for attr size in mi_enum_attr
fs/ntfs3: Check for extremely large size of $AttrDef
fs/ntfs3: Improved checking of attribute's name length
fs/ntfs3: Add null pointer checks
fs/ntfs3: fix spelling mistake "attibute" -> "attribute"
fs/ntfs3: Add length check in indx_get_root
...
Linus Torvalds [Sat, 29 Apr 2023 17:44:27 +0000 (10:44 -0700)]
Merge tag 'xfs-6.4-merge-1' of git://git./fs/xfs/xfs-linux
Pull xfs updates from Dave Chinner:
"This consists mainly of online scrub functionality and the design
documentation for the upcoming online repair functionality built on
top of the scrub code:
- Added detailed design documentation for the upcoming online repair
feature
- major update to online scrub to complete the reverse mapping
cross-referencing infrastructure enabling us to fully validate
allocated metadata against owner records. This is the last piece of
scrub infrastructure needed before we can start merging online
repair functionality.
- Fixes for the ascii-ci hashing issues
- deprecation of the ascii-ci functionality
- on-disk format verification bug fixes
- various random bug fixes for syzbot and other bug reports"
* tag 'xfs-6.4-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (107 commits)
xfs: fix livelock in delayed allocation at ENOSPC
xfs: Extend table marker on deprecated mount options table
xfs: fix duplicate includes
xfs: fix BUG_ON in xfs_getbmap()
xfs: verify buffer contents when we skip log replay
xfs: _{attr,data}_map_shared should take ILOCK_EXCL until iread_extents is completely done
xfs: remove WARN when dquot cache insertion fails
xfs: don't consider future format versions valid
xfs: deprecate the ascii-ci feature
xfs: test the ascii case-insensitive hash
xfs: stabilize the dirent name transformation function used for ascii-ci dir hash computation
xfs: cross-reference rmap records with refcount btrees
xfs: cross-reference rmap records with inode btrees
xfs: cross-reference rmap records with free space btrees
xfs: cross-reference rmap records with ag btrees
xfs: introduce bitmap type for AG blocks
xfs: convert xbitmap to interval tree
xfs: drop the _safe behavior from the xbitmap foreach macro
xfs: don't load local xattr values during scrub
xfs: remove the for_each_xbitmap_ helpers
...
Linus Torvalds [Sat, 29 Apr 2023 17:35:48 +0000 (10:35 -0700)]
Merge tag 'iomap-6.4-merge-1' of git://git./fs/xfs/xfs-linux
Pull iomap updates from Darrick Wong:
"The only changes for this cycle are the addition of tracepoints to the
iomap directio code so that Ritesh (who is working on porting ext2 to
iomap) can observe the io flows more easily.
Summary:
- Remove an unused symbol
- Add tracepoints for the directio code"
* tag 'iomap-6.4-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
iomap: Add DIO tracepoints
iomap: Remove IOMAP_DIO_NOSYNC unused dio flag
fs.h: Add TRACE_IOCB_STRINGS for use in trace points
Linus Torvalds [Sat, 29 Apr 2023 17:29:57 +0000 (10:29 -0700)]
Merge tag 'dma-mapping-6.4-2023-04-28' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig:
- fix a PageHighMem check in dma-coherent initialization (Doug Berger)
- clean up the coherency defaul initialiation (Jiaxun Yang)
- add cacheline to user/kernel dma-debug space dump messages (Desnes
Nunes, Geert Uytterhoeve)
- swiotlb statistics improvements (Michael Kelley)
- misc cleanups (Petr Tesarik)
* tag 'dma-mapping-6.4-2023-04-28' of git://git.infradead.org/users/hch/dma-mapping:
swiotlb: Omit total_used and used_hiwater if !CONFIG_DEBUG_FS
swiotlb: track and report io_tlb_used high water marks in debugfs
swiotlb: fix debugfs reporting of reserved memory pools
swiotlb: relocate PageHighMem test away from rmem_swiotlb_setup
of: address: always use dma_default_coherent for default coherency
dma-mapping: provide CONFIG_ARCH_DMA_DEFAULT_COHERENT
dma-mapping: provide a fallback dma_default_coherent
dma-debug: Use %pa to format phys_addr_t
dma-debug: add cacheline to user/kernel space dump messages
dma-debug: small dma_debug_entry's comment and variable name updates
dma-direct: cleanup parameters to dma_direct_optimal_gfp_mask
Linus Torvalds [Sat, 29 Apr 2023 17:24:30 +0000 (10:24 -0700)]
Merge tag 'timers-core-2023-04-28' of git://git./linux/kernel/git/tip/tip
Pull more timer updates from Thomas Gleixner:
"Timekeeping and clocksource/event driver updates the second batch:
- A trivial documentation fix in the timekeeping core
- A really boring set of small fixes, enhancements and cleanups in
the drivers code. No new clocksource/clockevent drivers for a
change"
* tag 'timers-core-2023-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timekeeping: Fix references to nonexistent ktime_get_fast_ns()
dt-bindings: timer: rockchip: Add rk3588 compatible
dt-bindings: timer: rockchip: Drop superfluous rk3288 compatible
clocksource/drivers/ti: Use of_property_read_bool() for boolean properties
clocksource/drivers/timer-ti-dm: Fix finding alwon timer
clocksource/drivers/davinci: Fix memory leak in davinci_timer_register when init fails
clocksource/drivers/stm32-lp: Drop of_match_ptr for ID table
clocksource/drivers/timer-ti-dm: Convert to platform remove callback returning void
clocksource/drivers/timer-tegra186: Convert to platform remove callback returning void
clocksource/drivers/timer-ti-dm: Improve error message in .remove
clocksource/drivers/timer-stm32-lp: Mark driver as non-removable
clocksource/drivers/sh_mtu2: Mark driver as non-removable
clocksource/drivers/timer-ti-dm: Use of_address_to_resource()
clocksource/drivers/timer-imx-gpt: Remove non-DT function
clocksource/drivers/timer-mediatek: Split out CPUXGPT timers
clocksource/drivers/exynos_mct: Explicitly return 0 for shared timer
Linus Torvalds [Sat, 29 Apr 2023 17:17:05 +0000 (10:17 -0700)]
Merge tag 'lsm-pr-
20230428' of git://git./linux/kernel/git/pcmoore/lsm
Pull lsm fix from Paul Moore:
"A single Documentation/LSM fix to update the LSM hook documentation
references from lsm_hooks.h to security.c"
* tag 'lsm-pr-
20230428' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
lsm: move hook comments docs to security/security.c
Linus Torvalds [Sat, 29 Apr 2023 17:11:32 +0000 (10:11 -0700)]
Merge tag 'integrity-v6.4' of git://git./linux/kernel/git/zohar/linux-integrity
Pull integrity update from Mimi Zohar:
"Just one one bug fix. Other integrity changes are being upstreamed via
the tpm and lsm trees"
* tag 'integrity-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
IMA: allow/fix UML builds
Linus Torvalds [Sat, 29 Apr 2023 17:05:22 +0000 (10:05 -0700)]
Merge tag 'cgroup-for-6.4' of git://git./linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:
- cpuset changes including the fix for an incorrect interaction with
CPU hotplug and an optimization
- Other doc and cosmetic changes
* tag 'cgroup-for-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
docs: cgroup-v1/cpusets: update libcgroup project link
cgroup/cpuset: Minor updates to test_cpuset_prs.sh
cgroup/cpuset: Include offline CPUs when tasks' cpumasks in top_cpuset are updated
cgroup/cpuset: Skip task update if hotplug doesn't affect current cpuset
cpuset: Clean up cpuset_node_allowed
cgroup: bpf: use cgroup_lock()/cgroup_unlock() wrappers
Linus Torvalds [Sat, 29 Apr 2023 16:48:52 +0000 (09:48 -0700)]
Merge tag 'wq-for-6.4' of git://git./linux/kernel/git/tj/wq
Pull workqueue updates from Tejun Heo:
"Mostly changes from Petr to improve warning and error reporting.
Workqueue now reports more of the relevant failures with better
context which should help debugging"
* tag 'wq-for-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: Introduce show_freezable_workqueues
workqueue: Print backtraces from CPUs with hung CPU bound workqueues
workqueue: Warn when a rescuer could not be created
workqueue: Interrupted create_worker() is not a repeated event
workqueue: Warn when a new worker could not be created
workqueue: Fix hung time report of worker pools
workqueue: Simplify a pr_warn() call in wq_select_unbound_cpu()
MAINTAINERS: Add workqueue_internal.h to the WORKQUEUE entry
Mark Rutland [Thu, 13 Apr 2023 16:06:44 +0000 (17:06 +0100)]
locking/atomic: Correct (cmp)xchg() instrumentation
All xchg() and cmpxchg() ops are atomic RMWs, but currently we
instrument these with instrument_atomic_write() rather than
instrument_atomic_read_write(), missing the read aspect.
Similarly, all try_cmpxchg() ops are non-atomic RMWs on *oldp, but we
instrument these accesses with instrument_atomic_write() rather than
instrument_read_write(), missing the read aspect and erroneously marking
these as atomic.
Fix the instrumentation for both points.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20230413160644.490976-1-mark.rutland@arm.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Uros Bizjak [Wed, 5 Apr 2023 14:17:09 +0000 (16:17 +0200)]
locking/x86: Define arch_try_cmpxchg_local()
Define target specific arch_try_cmpxchg_local(). This
definition overrides the generic arch_try_cmpxchg_local()
fallback definition and enables target-specific
implementation of try_cmpxchg_local().
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230405141710.3551-5-ubizjak@gmail.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Uros Bizjak [Wed, 5 Apr 2023 14:17:08 +0000 (16:17 +0200)]
locking/arch: Wire up local_try_cmpxchg()
Implement target specific support for local_try_cmpxchg()
and local_cmpxchg() using typed C wrappers that call their
_local counterpart and provide additional checking of
their input arguments.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230405141710.3551-4-ubizjak@gmail.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Uros Bizjak [Wed, 5 Apr 2023 14:17:07 +0000 (16:17 +0200)]
locking/generic: Wire up local{,64}_try_cmpxchg()
Implement generic support for local{,64}_try_cmpxchg().
Redirect to the atomic_ family of functions when the target
does not provide its own local.h definitions.
For 64-bit targets, implement local64_try_cmpxchg and
local64_cmpxchg using typed C wrappers that call local_
family of functions and provide additional checking
of their input arguments.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20230405141710.3551-3-ubizjak@gmail.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>