The results of "access_ok()" can be mis-speculated. The result is that
you can end speculatively:
if (access_ok(from, size))
// Right here
even for bad from/size combinations. On first glance, it would be ideal
to just add a speculation barrier to "access_ok()" so that its results
can never be mis-speculated.
But there are lots of system calls just doing access_ok() via
"copy_to_user()" and friends (example: fstat() and friends). Those are
generally not problematic because they do not _consume_ data from
userspace other than the pointer. They are also very quick and common
system calls that should not be needlessly slowed down.
"copy_from_user()" on the other hand uses a user-controller pointer and
is frequently followed up with code that might affect caches. Take
something like this:
if (!copy_from_user(&kernelvar, uptr, size))
do_something_with(kernelvar);
If userspace passes in an evil 'uptr' that *actually* points to a kernel
addresses, and then do_something_with() has cache (or other)
side-effects, it could allow userspace to infer kernel data values.
Add a barrier to the common copy_from_user() code to prevent
mis-speculated values which happen after the copy.
Also add a stub for architectures that do not define barrier_nospec().
This makes the macro usable in generic code.
Since the barrier is now usable in generic code, the x86 #ifdef in the
BPF code can also go away.
Reported-by: Jordy Zomer <jordyzomer@google.com>
Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Daniel Borkmann <daniel@iogearbox.net> # BPF bits
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Rework a large bunch of drivers to use the generic thermal trip
structure and use the opportunity to do more cleanups by removing
unused functions from the OF code (Daniel Lezcano).
- Remove core header inclusion from drivers (Daniel Lezcano).
- Fix some locking issues related to the generic thermal trip rework
(Johan Hovold).
- Fix a crash when requesting the critical temperature on tegra, which
is related to the generic trip point work (Jon Hunter).
- Clean up thermal device unregistration code (Viresh Kumar).
- Fix and clean up thermal control core initialization error code
paths (Daniel Lezcano).
- Relocate the trip points handling code into a separate file (Daniel
Lezcano).
- Make the thermal core fail registration of thermal zones and cooling
devices if the thermal class has not been registered (Rafael Wysocki).
- Add trip point initialization helper functions for ACPI-defined trip
points and modify two thermal drivers to use them (Rafael Wysocki,
Daniel Lezcano).
- Make the core thermal control code use sysfs_emit_at() instead of
scnprintf() where applicable (ye xingchen).
- Consolidate code accessing the Intel TCC (Thermal Control Circuitry)
MSRs by introducing library functions for that and making the
TCC-related code in thermal drivers use them (Zhang Rui).
- Enhance the x86_pkg_temp_thermal driver to support dynamic tjmax
changes (Zhang Rui).
- Address an "unsigned expression compared with zero" warning in the
intel_soc_dts_iosf thermal driver (Yang Li).
- Update comments regarding two functions in the Intel Menlow thermal
driver (Deming Wang).
- Use sysfs_emit_at() instead of scnprintf() in the int340x thermal
driver (ye xingchen).
- Make the intel_pch thermal driver support the Wellsburg PCH (Tim
Zimmermann).
- Modify the intel_pch and processor_thermal_device_pci thermal drivers
use generic trip point tables instead of thermal zone trip point
callbacks (Daniel Lezcano).
- Add production mode attribute sysfs attribute to the int340x thermal
driver (Srinivas Pandruvada).
- Rework dynamic trip point updates handling and locking in the int340x
thermal driver (Rafael Wysocki).
- Make the int340x thermal driver use a generic trip points table
instead of thermal zone trip point callbacks (Rafael Wysocki, Daniel
Lezcano).
- Clean up and improve the int340x thermal driver (Rafael Wysocki).
- Simplify and clean up the intel_pch thermal driver (Rafael Wysocki).
- Fix the Intel powerclamp thermal driver and make it use the common
idle injection framework (Srinivas Pandruvada).
- Add two module parameters, cpumask and max_idle, to the Intel powerclamp
thermal driver to allow it to affect only a specific subset of CPUs
instead of all of them (Srinivas Pandruvada).
- Make the Intel quark_dts thermal driver Use generic trip point
objects instead of its own trip point representation (Daniel
Lezcano).
- Add toctree entry for thermal documents and fix two issues in the
Intel powerclamp driver documentation (Bagas Sanjaya).
- Use strscpy() to instead of strncpy() in the thermal core (Xu Panda).
- Fix thermal_sampling_exit() (Vincent Guittot).
- Add Mediatek Low Voltage Thermal Sensor (LVTS) driver (Balsam Chihi).
- Add r8a779g0 RCar support to the rcar_gen3 thermal driver (Geert
Uytterhoeven).
- Fix useless call to set_trips() when resuming in the rcar_gen3
thermal control driver and add interrupt support detection at init
time to it (Niklas Söderlund).
- Fix memory corruption in the hi3660 thermal driver (Yongqin Liu).
- Fix include path for libnl3 in pkg-config file for libthermal (Vibhav
Pant).
- Remove syscfg-based driver for st as the platform is not supported
any more (Alain Volmat).
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Merge tag 'thermal-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control updates from Rafael Wysocki:
"The majority of changes here are related to the general switch-over to
using arrays of generic trip point structures registered along with a
thermal zone instead of trip point callbacks (this has been done
mostly by Daniel Lezcano with some help from yours truly on the Intel
drivers front).
Apart from that and the related reorganization of code, there are some
enhancements of the existing driver and a new Mediatek Low Voltage
Thermal Sensor (LVTS) driver. The Intel powerclamp undergoes a major
rework so it will use the generic idle_inject facility for CPU idle
time injection going forward and it will take additional module
parameters for specifying the subset of CPUs to be affected by it
(work done by Srinivas Pandruvada).
Also included are assorted fixes and a whole bunch of cleanups.
Specifics:
- Rework a large bunch of drivers to use the generic thermal trip
structure and use the opportunity to do more cleanups by removing
unused functions from the OF code (Daniel Lezcano)
- Remove core header inclusion from drivers (Daniel Lezcano)
- Fix some locking issues related to the generic thermal trip rework
(Johan Hovold)
- Fix a crash when requesting the critical temperature on tegra,
which is related to the generic trip point work (Jon Hunter)
- Clean up thermal device unregistration code (Viresh Kumar)
- Fix and clean up thermal control core initialization error code
paths (Daniel Lezcano)
- Relocate the trip points handling code into a separate file (Daniel
Lezcano)
- Make the thermal core fail registration of thermal zones and
cooling devices if the thermal class has not been registered
(Rafael Wysocki)
- Add trip point initialization helper functions for ACPI-defined
trip points and modify two thermal drivers to use them (Rafael
Wysocki, Daniel Lezcano)
- Make the core thermal control code use sysfs_emit_at() instead of
scnprintf() where applicable (ye xingchen)
- Consolidate code accessing the Intel TCC (Thermal Control
Circuitry) MSRs by introducing library functions for that and
making the TCC-related code in thermal drivers use them (Zhang Rui)
- Enhance the x86_pkg_temp_thermal driver to support dynamic tjmax
changes (Zhang Rui)
- Address an "unsigned expression compared with zero" warning in the
intel_soc_dts_iosf thermal driver (Yang Li)
- Update comments regarding two functions in the Intel Menlow thermal
driver (Deming Wang)
- Use sysfs_emit_at() instead of scnprintf() in the int340x thermal
driver (ye xingchen)
- Make the intel_pch thermal driver support the Wellsburg PCH (Tim
Zimmermann)
- Modify the intel_pch and processor_thermal_device_pci thermal
drivers use generic trip point tables instead of thermal zone trip
point callbacks (Daniel Lezcano)
- Add production mode attribute sysfs attribute to the int340x
thermal driver (Srinivas Pandruvada)
- Rework dynamic trip point updates handling and locking in the
int340x thermal driver (Rafael Wysocki)
- Make the int340x thermal driver use a generic trip points table
instead of thermal zone trip point callbacks (Rafael Wysocki,
Daniel Lezcano)
- Clean up and improve the int340x thermal driver (Rafael Wysocki)
- Simplify and clean up the intel_pch thermal driver (Rafael Wysocki)
- Fix the Intel powerclamp thermal driver and make it use the common
idle injection framework (Srinivas Pandruvada)
- Add two module parameters, cpumask and max_idle, to the Intel
powerclamp thermal driver to allow it to affect only a specific
subset of CPUs instead of all of them (Srinivas Pandruvada)
- Make the Intel quark_dts thermal driver Use generic trip point
objects instead of its own trip point representation (Daniel
Lezcano)
- Add toctree entry for thermal documents and fix two issues in the
Intel powerclamp driver documentation (Bagas Sanjaya)
- Use strscpy() to instead of strncpy() in the thermal core (Xu
Panda)
- Fix thermal_sampling_exit() (Vincent Guittot)
- Add Mediatek Low Voltage Thermal Sensor (LVTS) driver (Balsam
Chihi)
- Add r8a779g0 RCar support to the rcar_gen3 thermal driver (Geert
Uytterhoeven)
- Fix useless call to set_trips() when resuming in the rcar_gen3
thermal control driver and add interrupt support detection at init
time to it (Niklas Söderlund)
- Fix memory corruption in the hi3660 thermal driver (Yongqin Liu)
- Fix include path for libnl3 in pkg-config file for libthermal
(Vibhav Pant)
- Remove syscfg-based driver for st as the platform is not supported
any more (Alain Volmat)"
* tag 'thermal-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (135 commits)
thermal/drivers/st: Remove syscfg based driver
thermal: Remove core header inclusion from drivers
tools/lib/thermal: Fix include path for libnl3 in pkg-config file.
thermal/drivers/hisi: Drop second sensor hi3660
thermal/drivers/rcar_gen3_thermal: Fix device initialization
thermal/drivers/rcar_gen3_thermal: Create device local ops struct
thermal/drivers/rcar_gen3_thermal: Do not call set_trips() when resuming
thermal/drivers/rcar_gen3: Add support for R-Car V4H
dt-bindings: thermal: rcar-gen3-thermal: Add r8a779g0 support
thermal/drivers/mediatek: Add the Low Voltage Thermal Sensor driver
dt-bindings: thermal: mediatek: Add LVTS thermal controllers
thermal/drivers/mediatek: Relocate driver to mediatek folder
tools/lib/thermal: Fix thermal_sampling_exit()
Documentation: powerclamp: Fix numbered lists formatting
Documentation: powerclamp: Escape wildcard in cpumask description
Documentation: admin-guide: Add toctree entry for thermal docs
thermal: intel: powerclamp: Add two module parameters
Documentation: admin-guide: Move intel_powerclamp documentation
thermal: core: Use sysfs_emit_at() instead of scnprintf()
thermal: intel: powerclamp: Fix duration module parameter
...
- Drop port I/O validation for some regions to avoid AML failures due
to rejections of legitimate port I/O writes (Mario Limonciello).
- Constify acpi_get_handle() pathname argument to allow its callers to
pass const pathnames to it (Sakari Ailus).
- Prevent acpi_ns_simple_repair() from crashing in some cases when
AE_AML_NO_RETURN_VALUE should be returned (Daniil Tatianin).
- Fix typo in CDAT DSMAS struct definition (Lukas Wunner).
- Drop an unnecessary (void *) conversion from the ACPI processor
driver (Zhou jie).
- Modify the ACPI processor performance library code to use the "no
limit" frequency QoS as appropriate and adjust the intel_pstate
driver accordingly (Rafael Wysocki).
- Add support for NBFT to the ACPI table parser (Stuart Hayes).
- Introduce list of known non-PNP devices to avoid enumerating some of
them as PNP devices (Rafael Wysocki).
- Add x86 ACPI paths to the ACPI entry in MAINTAINERS to allow scripts
to report the actual maintainers information (Rafael Wysocki).
- Add two more entries to the ACPI IRQ override quirk list (Adam
Niederer, Werner Sembach).
- Add a pmic_i2c_address entry for Intel Bay Trail Crystal Cove to
allow intel_soc_pmic_exec_mipi_pmic_seq_element() to be used with
the Bay Trail Crystal Cove PMIC OpRegion driver (Hans de Goede).
- Add comments with DSDT power OpRegion field names to the ACPI PMIC
driver (Hans de Goede).
- Fix string termination handling in the ACPI battery driver (Armin
Wolf).
- Limit error type to 32-bit width in the ACPI APEI error injection
code (Shuai Xue).
- Fix Lenovo Ideapad Z570 DMI match in the ACPI backlight driver (Hans
de Goede).
- Silence missing prototype warnings in some places in the ACPI-related
code (Ammar Faizi).
- Make kobj_type structures used in the ACPI code constant (Thomas
Weißschuh).
- Correct spelling in firmware-guide/ACPI (Randy Dunlap).
- Clarify the meaning of Explicit and Implicit in the _DSD GPIO
properties documentation (Andy Shevchenko).
- Fix some kernel-doc comments in the ACPI CPPC library code (Yang Li).
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Merge tag 'acpi-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These fix a frequency limit issue in the ACPI processor performance
library code, fix a few issues in the ACPICA code, improve Crystal
Cove support in the ACPI PMIC driver, fix string handling in the ACPI
battery driver, add IRQ override quirks for a few machines more, fix
other assorted problems and clean up code and documentation.
Specifics:
- Drop port I/O validation for some regions to avoid AML failures due
to rejections of legitimate port I/O writes (Mario Limonciello)
- Constify acpi_get_handle() pathname argument to allow its callers
to pass const pathnames to it (Sakari Ailus)
- Prevent acpi_ns_simple_repair() from crashing in some cases when
AE_AML_NO_RETURN_VALUE should be returned (Daniil Tatianin)
- Fix typo in CDAT DSMAS struct definition (Lukas Wunner)
- Drop an unnecessary (void *) conversion from the ACPI processor
driver (Zhou jie)
- Modify the ACPI processor performance library code to use the "no
limit" frequency QoS as appropriate and adjust the intel_pstate
driver accordingly (Rafael Wysocki)
- Add support for NBFT to the ACPI table parser (Stuart Hayes)
- Introduce list of known non-PNP devices to avoid enumerating some
of them as PNP devices (Rafael Wysocki)
- Add x86 ACPI paths to the ACPI entry in MAINTAINERS to allow
scripts to report the actual maintainers information (Rafael
Wysocki)
- Add two more entries to the ACPI IRQ override quirk list (Adam
Niederer, Werner Sembach)
- Add a pmic_i2c_address entry for Intel Bay Trail Crystal Cove to
allow intel_soc_pmic_exec_mipi_pmic_seq_element() to be used with
the Bay Trail Crystal Cove PMIC OpRegion driver (Hans de Goede)
- Add comments with DSDT power OpRegion field names to the ACPI PMIC
driver (Hans de Goede)
- Fix string termination handling in the ACPI battery driver (Armin
Wolf)
- Limit error type to 32-bit width in the ACPI APEI error injection
code (Shuai Xue)
- Fix Lenovo Ideapad Z570 DMI match in the ACPI backlight driver
(Hans de Goede)
- Silence missing prototype warnings in some places in the
ACPI-related code (Ammar Faizi)
- Make kobj_type structures used in the ACPI code constant (Thomas
Weißschuh)
- Correct spelling in firmware-guide/ACPI (Randy Dunlap)
- Clarify the meaning of Explicit and Implicit in the _DSD GPIO
properties documentation (Andy Shevchenko)
- Fix some kernel-doc comments in the ACPI CPPC library code (Yang
Li)"
* tag 'acpi-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (25 commits)
ACPI: make kobj_type structures constant
Documentation: firmware-guide: gpio-properties: Clarify Explicit and Implicit
ACPICA: Fix typo in CDAT DSMAS struct definition
ACPI: resource: Do IRQ override on all TongFang GMxRGxx
ACPI: resource: Add IRQ overrides for MAINGEAR Vector Pro 2 models
ACPI: CPPC: Fix some kernel-doc comments
ACPI: video: Fix Lenovo Ideapad Z570 DMI match
Documentation: firmware-guide/ACPI: correct spelling
ACPI: PMIC: Add comments with DSDT power opregion field names
ACPI: battery: Increase maximum string length
ACPI: battery: Fix buffer overread if not NUL-terminated
ACPI: APEI: EINJ: Limit error type to 32-bit width
MAINTAINERS: Add x86 ACPI paths to the ACPI entry
ACPI: battery: Fix missing NUL-termination with large strings
ACPI: PNP: Introduce list of known non-PNP devices
ACPICA: nsrepair: handle cases without a return value correctly
ACPI: Silence missing prototype warnings
cpufreq: intel_pstate: Drop ACPI _PSS states table patching
ACPI: processor: perflib: Avoid updating frequency QoS unnecessarily
ACPI: processor: perflib: Use the "no limit" frequency QoS
...
- Add EPP support to the AMD P-state cpufreq driver (Perry Yuan, Wyes
Karny, Arnd Bergmann, Bagas Sanjaya).
- Drop the custom cpufreq driver for loongson1 that is not necessary
any more and the corresponding cpufreq platform device (Keguang
Zhang).
- Remove "select SRCU" from system sleep, cpufreq and OPP Kconfig
entries (Paul E. McKenney).
- Enable thermal cooling for Tegra194 (Yi-Wei Wang).
- Register module device table and add missing compatibles for
cpufreq-qcom-hw (Nícolas F. R. A. Prado, Abel Vesa and Luca Weiss).
- Various dt binding updates for qcom-cpufreq-nvmem and opp-v2-kryo-cpu
(Christian Marangi).
- Make kobj_type structure in the cpufreq core constant (Thomas
Weißschuh).
- Make cpufreq_unregister_driver() return void (Uwe Kleine-König).
- Make the TEO cpuidle governor check CPU utilization in order to refine
idle state selection (Kajetan Puchalski).
- Make Kconfig select the haltpoll cpuidle governor when the haltpoll
cpuidle driver is selected and replace a default_idle() call in that
driver with arch_cpu_idle() to allow MWAIT to be used (Li RongQing).
- Add Emerald Rapids Xeon support to the intel_idle driver (Artem
Bityutskiy).
- Add ARCH_SUSPEND_POSSIBLE dependencies for ARMv4 cpuidle drivers to
avoid randconfig build failures (Arnd Bergmann).
- Make kobj_type structures used in the cpuidle sysfs interface
constant (Thomas Weißschuh).
- Make the cpuidle driver registration code update microsecond values
of idle state parameters in accordance with their nanosecond values
if they are provided (Rafael Wysocki).
- Make the PSCI cpuidle driver prevent topology CPUs from being
suspended on PREEMPT_RT (Krzysztof Kozlowski).
- Document that pm_runtime_force_suspend() cannot be used with
DPM_FLAG_SMART_SUSPEND (Richard Fitzgerald).
- Add EXPORT macros for exporting PM functions from drivers (Richard
Fitzgerald).
- Remove /** from non-kernel-doc comments in hibernation code (Randy
Dunlap).
- Fix possible name leak in powercap_register_zone() (Yang Yingliang).
- Add Meteor Lake and Emerald Rapids support to the intel_rapl power
capping driver (Zhang Rui).
- Modify the idle_inject power capping facility to support 100% idle
injection (Srinivas Pandruvada).
- Fix large time windows handling in the intel_rapl power capping
driver (Zhang Rui).
- Fix memory leaks with using debugfs_lookup() in the generic PM
domains and Energy Model code (Greg Kroah-Hartman).
- Add missing 'cache-unified' property in the example for kryo OPP
bindings (Rob Herring).
- Fix error checking in opp_migrate_dentry() (Qi Zheng).
- Let qcom,opp-fuse-level be a 2-long array for qcom SoCs (Konrad
Dybcio).
- Modify some power management utilities to use the canonical ftrace
path (Ross Zwisler).
- Correct spelling problems for Documentation/power/ as reported by
codespell (Randy Dunlap).
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Merge tag 'pm-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These add EPP support to the AMD P-state cpufreq driver, add support
for new platforms to the Intel RAPL power capping driver, intel_idle
and the Qualcomm cpufreq driver, enable thermal cooling for Tegra194,
drop the custom cpufreq driver for loongson1 that is not necessary any
more (and the corresponding cpufreq platform device), fix assorted
issues and clean up code.
Specifics:
- Add EPP support to the AMD P-state cpufreq driver (Perry Yuan, Wyes
Karny, Arnd Bergmann, Bagas Sanjaya)
- Drop the custom cpufreq driver for loongson1 that is not necessary
any more and the corresponding cpufreq platform device (Keguang
Zhang)
- Remove "select SRCU" from system sleep, cpufreq and OPP Kconfig
entries (Paul E. McKenney)
- Enable thermal cooling for Tegra194 (Yi-Wei Wang)
- Register module device table and add missing compatibles for
cpufreq-qcom-hw (Nícolas F. R. A. Prado, Abel Vesa and Luca Weiss)
- Various dt binding updates for qcom-cpufreq-nvmem and
opp-v2-kryo-cpu (Christian Marangi)
- Make kobj_type structure in the cpufreq core constant (Thomas
Weißschuh)
- Make cpufreq_unregister_driver() return void (Uwe Kleine-König)
- Make the TEO cpuidle governor check CPU utilization in order to
refine idle state selection (Kajetan Puchalski)
- Make Kconfig select the haltpoll cpuidle governor when the haltpoll
cpuidle driver is selected and replace a default_idle() call in
that driver with arch_cpu_idle() to allow MWAIT to be used (Li
RongQing)
- Add Emerald Rapids Xeon support to the intel_idle driver (Artem
Bityutskiy)
- Add ARCH_SUSPEND_POSSIBLE dependencies for ARMv4 cpuidle drivers to
avoid randconfig build failures (Arnd Bergmann)
- Make kobj_type structures used in the cpuidle sysfs interface
constant (Thomas Weißschuh)
- Make the cpuidle driver registration code update microsecond values
of idle state parameters in accordance with their nanosecond values
if they are provided (Rafael Wysocki)
- Make the PSCI cpuidle driver prevent topology CPUs from being
suspended on PREEMPT_RT (Krzysztof Kozlowski)
- Document that pm_runtime_force_suspend() cannot be used with
DPM_FLAG_SMART_SUSPEND (Richard Fitzgerald)
- Add EXPORT macros for exporting PM functions from drivers (Richard
Fitzgerald)
- Remove /** from non-kernel-doc comments in hibernation code (Randy
Dunlap)
- Fix possible name leak in powercap_register_zone() (Yang Yingliang)
- Add Meteor Lake and Emerald Rapids support to the intel_rapl power
capping driver (Zhang Rui)
- Modify the idle_inject power capping facility to support 100% idle
injection (Srinivas Pandruvada)
- Fix large time windows handling in the intel_rapl power capping
driver (Zhang Rui)
- Fix memory leaks with using debugfs_lookup() in the generic PM
domains and Energy Model code (Greg Kroah-Hartman)
- Add missing 'cache-unified' property in the example for kryo OPP
bindings (Rob Herring)
- Fix error checking in opp_migrate_dentry() (Qi Zheng)
- Let qcom,opp-fuse-level be a 2-long array for qcom SoCs (Konrad
Dybcio)
- Modify some power management utilities to use the canonical ftrace
path (Ross Zwisler)
- Correct spelling problems for Documentation/power/ as reported by
codespell (Randy Dunlap)"
* tag 'pm-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (53 commits)
Documentation: amd-pstate: disambiguate user space sections
cpufreq: amd-pstate: Fix invalid write to MSR_AMD_CPPC_REQ
dt-bindings: opp: opp-v2-kryo-cpu: enlarge opp-supported-hw maximum
dt-bindings: cpufreq: qcom-cpufreq-nvmem: make cpr bindings optional
dt-bindings: cpufreq: qcom-cpufreq-nvmem: specify supported opp tables
PM: Add EXPORT macros for exporting PM functions
cpuidle: psci: Do not suspend topology CPUs on PREEMPT_RT
MIPS: loongson32: Drop obsolete cpufreq platform device
powercap: intel_rapl: Fix handling for large time window
cpuidle: driver: Update microsecond values of state parameters as needed
cpuidle: sysfs: make kobj_type structures constant
cpuidle: add ARCH_SUSPEND_POSSIBLE dependencies
PM: EM: fix memory leak with using debugfs_lookup()
PM: domains: fix memory leak with using debugfs_lookup()
cpufreq: Make kobj_type structure constant
cpufreq: davinci: Fix clk use after free
cpufreq: amd-pstate: avoid uninitialized variable use
cpufreq: Make cpufreq_unregister_driver() return void
OPP: fix error checking in opp_migrate_dentry()
dt-bindings: cpufreq: cpufreq-qcom-hw: Add SM8550 compatible
...
- Replace 0-length and 1-element arrays with flexible arrays in various
subsystems (Paulo Miguel Almeida, Stephen Rothwell, Kees Cook)
- randstruct: Disable Clang 15 support (Eric Biggers)
- GCC plugins: Drop -std=gnu++11 flag (Sam James)
- strpbrk(): Refactor to use strchr() (Andy Shevchenko)
- LoadPin LSM: Allow root filesystem switching when non-enforcing
- fortify: Use dynamic object size hints when available
- ext4: Fix CFI function prototype mismatch
- Nouveau: Fix DP buffer size arguments
- hisilicon: Wipe entire crypto DMA pool on error
- coda: Fully allocate sig_inputArgs
- UBSAN: Improve arm64 trap code reporting
- copy_struct_from_user(): Add minimum bounds check on kernel buffer size
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Merge tag 'hardening-v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"Beyond some specific LoadPin, UBSAN, and fortify features, there are
other fixes scattered around in various subsystems where maintainers
were okay with me carrying them in my tree or were non-responsive but
the patches were reviewed by others:
- Replace 0-length and 1-element arrays with flexible arrays in
various subsystems (Paulo Miguel Almeida, Stephen Rothwell, Kees
Cook)
- randstruct: Disable Clang 15 support (Eric Biggers)
- GCC plugins: Drop -std=gnu++11 flag (Sam James)
- strpbrk(): Refactor to use strchr() (Andy Shevchenko)
- LoadPin LSM: Allow root filesystem switching when non-enforcing
- fortify: Use dynamic object size hints when available
- ext4: Fix CFI function prototype mismatch
- Nouveau: Fix DP buffer size arguments
- hisilicon: Wipe entire crypto DMA pool on error
- coda: Fully allocate sig_inputArgs
- UBSAN: Improve arm64 trap code reporting
- copy_struct_from_user(): Add minimum bounds check on kernel buffer
size"
* tag 'hardening-v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
randstruct: disable Clang 15 support
uaccess: Add minimum bounds check on kernel buffer size
arm64: Support Clang UBSAN trap codes for better reporting
coda: Avoid partial allocation of sig_inputArgs
gcc-plugins: drop -std=gnu++11 to fix GCC 13 build
lib/string: Use strchr() in strpbrk()
crypto: hisilicon: Wipe entire pool on error
net/i40e: Replace 0-length array with flexible array
io_uring: Replace 0-length array with flexible array
ext4: Fix function prototype mismatch for ext4_feat_ktype
i915/gvt: Replace one-element array with flexible-array member
drm/nouveau/disp: Fix nvif_outp_acquire_dp() argument size
LoadPin: Allow filesystem switch when not enforcing
LoadPin: Move pin reporting cleanly out of locking
LoadPin: Refactor sysctl initialization
LoadPin: Refactor read-only check into a helper
ARM: ixp4xx: Replace 0-length arrays with flexible arrays
fortify: Use __builtin_dynamic_object_size() when available
rxrpc: replace zero-lenth array with DECLARE_FLEX_ARRAY() helper
- Fix kernel-doc function name ordering to avoid warning (Randy Dunlap)
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Merge tag 'seccomp-v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp update from Kees Cook:
- Fix kernel-doc function name ordering to avoid warning (Randy Dunlap)
* tag 'seccomp-v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
seccomp: fix kernel-doc function name warning
This pull request contains the following branches:
doc.2023.01.05a: Documentation updates.
fixes.2023.01.23a: Miscellaneous fixes, perhaps most notably:
o Throttling callback invocation based on the number of callbacks
that are now ready to invoke instead of on the total number
of callbacks.
o Several patches that suppress false-positive boot-time
diagnostics, for example, due to lockdep not yet being
initialized.
o Make expedited RCU CPU stall warnings dump stacks of any tasks
that are blocking the stalled grace period. (Normal RCU CPU
stall warnings have doen this for mnay years.)
o Lazy-callback fixes to avoid delays during boot, suspend, and
resume. (Note that lazy callbacks must be explicitly enabled,
so this should not (yet) affect production use cases.)
kvfree.2023.01.03a: Cause kfree_rcu() and friends to take advantage of
polled grace periods, thus reducing memory footprint by almost
two orders of magnitude, admittedly on a microbenchmark.
This series also begins the transition from kfree_rcu(p) to
kfree_rcu_mightsleep(p). This transition was motivated by bugs
where kfree_rcu(p), which can block, was typed instead of the
intended kfree_rcu(p, rh).
srcu.2023.01.03a: SRCU updates, perhaps most notably fixing a bug that
causes SRCU to fail when booted on a system with a non-zero boot
CPU. This surprising situation actually happens for kdump kernels
on the powerpc architecture. It also adds an srcu_down_read()
and srcu_up_read(), which act like srcu_read_lock() and
srcu_read_unlock(), but allow an SRCU read-side critical section
to be handed off from one task to another.
srcu-always.2023.02.02a: Cleans up the now-useless SRCU Kconfig option.
There are a few more commits that are not yet acked or pulled
into maintainer trees, and these will be in a pull request for
a later merge window.
tasks.2023.01.03a: RCU-tasks updates, perhaps most notably these fixes:
o A strange interaction between PID-namespace unshare and the
RCU-tasks grace period that results in a low-probability but
very real hang.
o A race between an RCU tasks rude grace period on a single-CPU
system and CPU-hotplug addition of the second CPU that can result
in a too-short grace period.
o A race between shrinking RCU tasks down to a single callback list
and queuing a new callback to some other CPU, but where that
queuing is delayed for more than an RCU grace period. This can
result in that callback being stranded on the non-boot CPU.
torture.2023.01.05a: Torture-test updates and fixes.
torturescript.2023.01.03a: Torture-test scripting updates and fixes.
stall.2023.01.09a: Provide additional RCU CPU stall-warning information
in kernels built with CONFIG_RCU_CPU_STALL_CPUTIME=y, and
restore the full five-minute timeout limit for expedited RCU
CPU stall warnings.
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Merge tag 'rcu.2023.02.10a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull RCU updates from Paul McKenney:
- Documentation updates
- Miscellaneous fixes, perhaps most notably:
- Throttling callback invocation based on the number of callbacks
that are now ready to invoke instead of on the total number of
callbacks
- Several patches that suppress false-positive boot-time
diagnostics, for example, due to lockdep not yet being
initialized
- Make expedited RCU CPU stall warnings dump stacks of any tasks
that are blocking the stalled grace period. (Normal RCU CPU
stall warnings have done this for many years)
- Lazy-callback fixes to avoid delays during boot, suspend, and
resume. (Note that lazy callbacks must be explicitly enabled, so
this should not (yet) affect production use cases)
- Make kfree_rcu() and friends take advantage of polled grace periods,
thus reducing memory footprint by almost two orders of magnitude,
admittedly on a microbenchmark
This also begins the transition from kfree_rcu(p) to
kfree_rcu_mightsleep(p). This transition was motivated by bugs where
kfree_rcu(p), which can block, was typed instead of the intended
kfree_rcu(p, rh)
- SRCU updates, perhaps most notably fixing a bug that causes SRCU to
fail when booted on a system with a non-zero boot CPU. This
surprising situation actually happens for kdump kernels on the
powerpc architecture
This also adds an srcu_down_read() and srcu_up_read(), which act like
srcu_read_lock() and srcu_read_unlock(), but allow an SRCU read-side
critical section to be handed off from one task to another
- Clean up the now-useless SRCU Kconfig option
There are a few more commits that are not yet acked or pulled into
maintainer trees, and these will be in a pull request for a later
merge window
- RCU-tasks updates, perhaps most notably these fixes:
- A strange interaction between PID-namespace unshare and the
RCU-tasks grace period that results in a low-probability but
very real hang
- A race between an RCU tasks rude grace period on a single-CPU
system and CPU-hotplug addition of the second CPU that can
result in a too-short grace period
- A race between shrinking RCU tasks down to a single callback
list and queuing a new callback to some other CPU, but where
that queuing is delayed for more than an RCU grace period. This
can result in that callback being stranded on the non-boot CPU
- Torture-test updates and fixes
- Torture-test scripting updates and fixes
- Provide additional RCU CPU stall-warning information in kernels built
with CONFIG_RCU_CPU_STALL_CPUTIME=y, and restore the full five-minute
timeout limit for expedited RCU CPU stall warnings
* tag 'rcu.2023.02.10a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (80 commits)
rcu/kvfree: Add kvfree_rcu_mightsleep() and kfree_rcu_mightsleep()
kernel/notifier: Remove CONFIG_SRCU
init: Remove "select SRCU"
fs/quota: Remove "select SRCU"
fs/notify: Remove "select SRCU"
fs/btrfs: Remove "select SRCU"
fs: Remove CONFIG_SRCU
drivers/pci/controller: Remove "select SRCU"
drivers/net: Remove "select SRCU"
drivers/md: Remove "select SRCU"
drivers/hwtracing/stm: Remove "select SRCU"
drivers/dax: Remove "select SRCU"
drivers/base: Remove CONFIG_SRCU
rcu: Disable laziness if lazy-tracking says so
rcu: Track laziness during boot and suspend
rcu: Remove redundant call to rcu_boost_kthread_setaffinity()
rcu: Allow up to five minutes expedited RCU CPU stall-warning timeouts
rcu: Align the output of RCU CPU stall warning messages
rcu: Add RCU stall diagnosis information
sched: Add helper nr_context_switches_cpu()
...
All the commits are trivial. Doc updates and a trivial code cleanup.
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Merge tag 'cgroup-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:
"All the changes are trivial: documentation updates and a trivial code
cleanup"
* tag 'cgroup-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup/cpuset: fix a few kernel-doc warnings & coding style
docs: cgroup-v1: use numbered lists for user interface setup
docs: cgroup-v1: add internal cross-references
docs: cgroup-v1: make swap extension subsections subsections
docs: cgroup-v1: use bullet lists for list of stat file tables
docs: cgroup-v1: move hierarchy of accounting caption
docs: cgroup-v1: fix footnotes
docs: cgroup-v1: use code block for locking order schema
docs: cgroup-v1: wrap remaining admonitions in admonition blocks
docs: cgroup-v1: replace custom note constructs with appropriate admonition blocks
cgroup/cpuset: no need to explicitly init a global static variable
* When per-cpu workqueue workers expire after sitting idle for too long,
they used to wake up to the CPU that they're bound to to exit. This
unfortunately could cause unwanted disturbances on CPUs isolated for e.g.
RT applications. The worker exit path is restructured so that an existing
worker is unbound from its CPU before being woken up for the last time,
allowing it to migrate away from an isolated CPU for exiting.
* A couple debug improvements. Watchdog dump is made more compact and
workqueue now warns if used-after-free during the RCU grace period after
destroy_workqueue().
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Merge tag 'wq-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue updates from Tejun Heo:
- When per-cpu workqueue workers expire after sitting idle for too
long, they used to wake up to the CPU that they're bound to in order
to exit. This unfortunately could cause unwanted disturbances on CPUs
isolated for e.g. RT applications.
The worker exit path is restructured so that an existing worker is
unbound from its CPU before being woken up for the last time,
allowing it to migrate away from an isolated CPU for exiting.
- A couple debug improvements. Watchdog dump is made more compact and
workqueue now warns if used-after-free during the RCU grace period
after destroy_workqueue().
* tag 'wq-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: Fold rebind_worker() within rebind_workers()
workqueue: Unbind kworkers before sending them to exit()
workqueue: Don't hold any lock while rcuwait'ing for !POOL_MANAGER_ACTIVE
workqueue: Convert the idle_timer to a timer + work_struct
workqueue: Factorize unbind/rebind_workers() logic
workqueue: Protects wq_unbound_cpumask with wq_pool_attach_mutex
workqueue: Make show_pwq() use run-length encoding
workqueue: Add a new flag to spot the potential UAF error
Core:
- Move the interrupt affinity spreading mechanism into lib/group_cpus
so it can be used for similar spreading requirements, e.g. in the
block multi-queue code.
This also contains a first usecase in the block multi-queue code which
Jens asked to take along with the librarization.
- Improve irqdomain locking to close a number race conditions which
can be observed with massive parallel device driver probing.
- Enforce and document the semantics of disable_irq() which cannot be
invoked safely from non-sleepable context.
- Move the IPI multiplexing code from the Apple AIC driver into the
core. so it can be reused by RISCV.
Drivers:
- Plug OF node refcounting leaks in various drivers.
- Correctly mark level triggered interrupts in the Broadcom L2 drivers.
- The usual small fixes and improvements.
- No new drivers for the record!
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Merge tag 'irq-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"Updates for the interrupt subsystem:
Core:
- Move the interrupt affinity spreading mechanism into lib/group_cpus
so it can be used for similar spreading requirements, e.g. in the
block multi-queue code
This also contains a first usecase in the block multi-queue code
which Jens asked to take along with the librarization
- Improve irqdomain locking to close a number race conditions which
can be observed with massive parallel device driver probing
- Enforce and document the semantics of disable_irq() which cannot be
invoked safely from non-sleepable context
- Move the IPI multiplexing code from the Apple AIC driver into the
core, so it can be reused by RISCV
Drivers:
- Plug OF node refcounting leaks in various drivers
- Correctly mark level triggered interrupts in the Broadcom L2
drivers
- The usual small fixes and improvements
- No new drivers for the record!"
* tag 'irq-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
irqchip/irq-bcm7120-l2: Set IRQ_LEVEL for level triggered interrupts
irqchip/irq-brcmstb-l2: Set IRQ_LEVEL for level triggered interrupts
irqdomain: Switch to per-domain locking
irqchip/mvebu-odmi: Use irq_domain_create_hierarchy()
irqchip/loongson-pch-msi: Use irq_domain_create_hierarchy()
irqchip/gic-v3-mbi: Use irq_domain_create_hierarchy()
irqchip/gic-v3-its: Use irq_domain_create_hierarchy()
irqchip/gic-v2m: Use irq_domain_create_hierarchy()
irqchip/alpine-msi: Use irq_domain_add_hierarchy()
x86/uv: Use irq_domain_create_hierarchy()
x86/ioapic: Use irq_domain_create_hierarchy()
irqdomain: Clean up irq_domain_push/pop_irq()
irqdomain: Drop leftover brackets
irqdomain: Drop dead domain-name assignment
irqdomain: Drop revmap mutex
irqdomain: Fix domain registration race
irqdomain: Fix mapping-creation race
irqdomain: Refactor __irq_domain_alloc_irqs()
irqdomain: Look for existing mapping only once
irqdomain: Drop bogus fwspec-mapping error handling
...
Core:
- Yet another round of improvements to make the clocksource watchdog
more robust:
- Relax the clocksource-watchdog skew criteria to match the NTP
criteria.
- Temporarily skip the watchdog when high memory latencies are
detected which can lead to false-positives.
- Provide an option to enable TSC skew detection even on systems
where TSC is marked as reliable.
Sigh!
- Initialize the restart block in the nanosleep syscalls to be directed
to the no restart function instead of doing a partial setup on entry.
This prevents an erroneous restart_syscall() invocation from
corrupting user space data. While such a situation is clearly a user
space bug, preventing this is a correctness issue and caters to the
least suprise principle.
- Ignore the hrtimer slack for realtime tasks in schedule_hrtimeout()
to align it with the nanosleep semantics.
Drivers:
- The obligatory new driver bindings for Mediatek, Rockchip and RISC-V
variants.
- Add support for the C3STOP misfeature to the RISC-V timer to handle
the case where the timer stops in deeper idle state.
- Set up a static key in the RISC-V timer correctly before first use.
- The usual small improvements and fixes all over the place
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Merge tag 'timers-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"Updates for timekeeping, timers and clockevent/source drivers:
Core:
- Yet another round of improvements to make the clocksource watchdog
more robust:
- Relax the clocksource-watchdog skew criteria to match the NTP
criteria.
- Temporarily skip the watchdog when high memory latencies are
detected which can lead to false-positives.
- Provide an option to enable TSC skew detection even on systems
where TSC is marked as reliable.
Sigh!
- Initialize the restart block in the nanosleep syscalls to be
directed to the no restart function instead of doing a partial
setup on entry.
This prevents an erroneous restart_syscall() invocation from
corrupting user space data. While such a situation is clearly a
user space bug, preventing this is a correctness issue and caters
to the least suprise principle.
- Ignore the hrtimer slack for realtime tasks in schedule_hrtimeout()
to align it with the nanosleep semantics.
Drivers:
- The obligatory new driver bindings for Mediatek, Rockchip and
RISC-V variants.
- Add support for the C3STOP misfeature to the RISC-V timer to handle
the case where the timer stops in deeper idle state.
- Set up a static key in the RISC-V timer correctly before first use.
- The usual small improvements and fixes all over the place"
* tag 'timers-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits)
clocksource/drivers/timer-sun4i: Add CLOCK_EVT_FEAT_DYNIRQ
clocksource/drivers/em_sti: Mark driver as non-removable
clocksource/drivers/sh_tmu: Mark driver as non-removable
clocksource/drivers/riscv: Patch riscv_clock_next_event() jump before first use
clocksource/drivers/timer-microchip-pit64b: Add delay timer
clocksource/drivers/timer-microchip-pit64b: Select driver only on ARM
dt-bindings: timer: sifive,clint: add comaptibles for T-Head's C9xx
dt-bindings: timer: mediatek,mtk-timer: add MT8365
clocksource/drivers/riscv: Get rid of clocksource_arch_init() callback
clocksource/drivers/sh_cmt: Mark driver as non-removable
clocksource/drivers/timer-microchip-pit64b: Drop obsolete dependency on COMPILE_TEST
clocksource/drivers/riscv: Increase the clock source rating
clocksource/drivers/timer-riscv: Set CLOCK_EVT_FEAT_C3STOP based on DT
dt-bindings: timer: Add bindings for the RISC-V timer device
RISC-V: time: initialize hrtimer based broadcast clock event device
dt-bindings: timer: rk-timer: Add rktimer for rv1126
time/debug: Fix memory leak with using debugfs_lookup()
clocksource: Enable TSC watchdog checking of HPET and PMTMR only when requested
posix-timers: Use atomic64_try_cmpxchg() in __update_gt_cputime()
clocksource: Verify HPET and PMTMR when TSC unverified
...
- Correct the common copy and pasted mishandling of kstrtobool() in the
strict_sas_size() setup function.
- Make recalibrate_cpu_khz() an GPL only export.
- Check TSC feature before doing anything else which avoids pointless
code execution if TSC is not available.
- Remove or fixup stale and misleading comments.
- Remove unused or pointelessly duplicated variables.
- Spelling and typo fixes.
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Merge tag 'x86-cleanups-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull miscellaneous x86 cleanups from Thomas Gleixner:
- Correct the common copy and pasted mishandling of kstrtobool() in the
strict_sas_size() setup function
- Make recalibrate_cpu_khz() an GPL only export
- Check TSC feature before doing anything else which avoids pointless
code execution if TSC is not available
- Remove or fixup stale and misleading comments
- Remove unused or pointelessly duplicated variables
- Spelling and typo fixes
* tag 'x86-cleanups-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/hotplug: Remove incorrect comment about mwait_play_dead()
x86/tsc: Do feature check as the very first thing
x86/tsc: Make recalibrate_cpu_khz() export GPL only
x86/cacheinfo: Remove unused trace variable
x86/Kconfig: Fix spellos & punctuation
x86/signal: Fix the value returned by strict_sas_size()
x86/cpu: Remove misleading comment
x86/setup: Move duplicate boot_cpu_data definition out of the ifdeffery
x86/boot/e820: Fix typo in e820.c comment
- Some smaller fixes
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Merge tag 'x86_vdso_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 vdso updates from Borislav Petkov:
- Add getcpu support for the 32-bit version of the vDSO
- Some smaller fixes
* tag 'x86_vdso_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vdso: Fix -Wmissing-prototypes warnings
x86/vdso: Fake 32bit VDSO build on 64bit compile for vgetcpu
selftests: Emit a warning if getcpu() is missing on 32bit
x86/vdso: Provide getcpu for x86-32.
x86/cpu: Provide the full setup for getcpu() on x86-32
x86/vdso: Move VDSO image init to vdso2c generated code
the way
- Improve revision reporting
- Properly check CPUID capabilities after late microcode upgrade to
avoid false positives
- A garden variety of other small fixes
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Merge tag 'x86_microcode_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode loader updates from Borislav Petkov:
- Fix mixed steppings support on AMD which got broken somewhere along
the way
- Improve revision reporting
- Properly check CPUID capabilities after late microcode upgrade to
avoid false positives
- A garden variety of other small fixes
* tag 'x86_microcode_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode/core: Return an error only when necessary
x86/microcode/AMD: Fix mixed steppings support
x86/microcode/AMD: Add a @cpu parameter to the reloading functions
x86/microcode/amd: Remove load_microcode_amd()'s bsp parameter
x86/microcode: Allow only "1" as a late reload trigger value
x86/microcode/intel: Print old and new revision during early boot
x86/microcode/intel: Pass the microcode revision to print_ucode_info() directly
x86/microcode: Adjust late loading result reporting message
x86/microcode: Check CPU capabilities after late microcode update correctly
x86/microcode: Add a parameter to microcode_check() to store CPU capabilities
x86/microcode: Use the DEVICE_ATTR_RO() macro
x86/microcode/AMD: Handle multiple glued containers properly
x86/microcode/AMD: Rename a couple of functions
allocation. Its goal is to control resource allocation in external slow
memory which is connected to the machine like for example through CXL devices,
accelerators etc
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Merge tag 'x86_cache_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 resource control updates from Borislav Petkov:
- Add support for a new AMD feature called slow memory bandwidth
allocation. Its goal is to control resource allocation in external
slow memory which is connected to the machine like for example
through CXL devices, accelerators etc
* tag 'x86_cache_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/resctrl: Fix a silly -Wunused-but-set-variable warning
Documentation/x86: Update resctrl.rst for new features
x86/resctrl: Add interface to write mbm_local_bytes_config
x86/resctrl: Add interface to write mbm_total_bytes_config
x86/resctrl: Add interface to read mbm_local_bytes_config
x86/resctrl: Add interface to read mbm_total_bytes_config
x86/resctrl: Support monitor configuration
x86/resctrl: Add __init attribute to rdt_get_mon_l3_config()
x86/resctrl: Detect and configure Slow Memory Bandwidth Allocation
x86/resctrl: Include new features in command line options
x86/cpufeatures: Add Bandwidth Monitoring Event Configuration feature flag
x86/resctrl: Add a new resource type RDT_RESOURCE_SMBA
x86/cpufeatures: Add Slow Memory Bandwidth Allocation feature flag
x86/resctrl: Replace smp_call_function_many() with on_each_cpu_mask()
tall calls properly which can be static calls too
- Add proper struct alt_instr.flags which controls different aspects of
insn patching behavior
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Merge tag 'x86_alternatives_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm alternatives updates from Borislav Petkov:
- Teach the static_call patching infrastructure to handle conditional
tall calls properly which can be static calls too
- Add proper struct alt_instr.flags which controls different aspects of
insn patching behavior
* tag 'x86_alternatives_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/static_call: Add support for Jcc tail-calls
x86/alternatives: Teach text_poke_bp() to patch Jcc.d32 instructions
x86/alternatives: Introduce int3_emulate_jcc()
x86/alternatives: Add alt_instr.flags
controller
- Add support for decoding errors from the first and second level memory
on SKL-based hardware
- Add support for the memory controllers in Intel Granite Rapids and
Emerald Rapids machines
- First round of amd64_edac driver simplification and removal of
unneeded functionality
- The usual cleanups and fixes
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Merge tag 'edac_updates_for_v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Borislav Petkov:
- Add a driver for the RAS functionality on Xilinx's on chip memory
controller
- Add support for decoding errors from the first and second level
memory on SKL-based hardware
- Add support for the memory controllers in Intel Granite Rapids and
Emerald Rapids machines
- First round of amd64_edac driver simplification and removal of
unneeded functionality
- The usual cleanups and fixes
* tag 'edac_updates_for_v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/amd64: Shut up an -Werror,-Wsometimes-uninitialized clang false positive
EDAC/amd64: Remove early_channel_count()
EDAC/amd64: Remove PCI Function 0
EDAC/amd64: Remove PCI Function 6
EDAC/amd64: Remove scrub rate control for Family 17h and later
EDAC/amd64: Don't set up EDAC PCI control on Family 17h+
EDAC/i10nm: Add driver decoder for Sapphire Rapids server
EDAC/i10nm: Add Intel Granite Rapids server support
EDAC/i10nm: Make more configurations CPU model specific
EDAC/i10nm: Add Intel Emerald Rapids server support
EDAC/skx_common: Delete duplicated and unreachable code
EDAC/skx_common: Enable EDAC support for the "near" memory
EDAC/qcom: Add platform_device_id table for module autoloading
EDAC/zynqmp: Add EDAC support for Xilinx ZynqMP OCM
dt-bindings: edac: Add bindings for Xilinx ZynqMP OCM
on newer AMD CPUs
- Mask out bits which don't belong to the address of the error being
reported
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Merge tag 'ras_core_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS updates from Borislav Petkov:
- Add support for reporting more bits of the physical address on error,
on newer AMD CPUs
- Mask out bits which don't belong to the address of the error being
reported
* tag 'ras_core_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Mask out non-address bits from machine check bank
x86/mce: Add support for Extended Physical Address MCA changes
x86/mce: Define a function to extract ErrorAddr from MCA_ADDR
- Simplify add_rtc_cmos()
- Use strscpy() in the mcelog code
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-platform-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform update from Ingo Molnar:
- Simplify add_rtc_cmos()
- Use strscpy() in the mcelog code
* tag 'x86-platform-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce/dev-mcelog: use strscpy() to instead of strncpy()
x86/rtc: Simplify PNP ids check
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-mm-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm update from Ingo Molnar:
"Micro-optimize __flush_tlb_all()"
* tag 'x86-mm-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Use cpu_feature_enabled() when checking global pages support
- Replace zero-length array in struct xregs_state with flexible-array member,
to help the enabling of stricter compiler checks.
- Don't set TIF_NEED_FPU_LOAD for PF_IO_WORKER threads.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-fpu-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fpu updates from Ingo Molnar:
- Replace zero-length array in struct xregs_state with flexible-array
member, to help the enabling of stricter compiler checks.
- Don't set TIF_NEED_FPU_LOAD for PF_IO_WORKER threads.
* tag 'x86-fpu-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu: Don't set TIF_NEED_FPU_LOAD for PF_IO_WORKER threads
x86/fpu: Replace zero-length array in struct xregs_state with flexible-array member
unless x86-32 is requested explicitly.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-build-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build update from Ingo Molnar:
"Make the 64-bit defconfig the x86 default for all builds, unless
x86-32 is requested explicitly"
* tag 'x86-build-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/build: Make 64-bit defconfig the default
- Robustify/fix calling startup_{32,64}() from the decompressor code,
and removing x86 quirk from scripts/head-object-list.txt as
a result.
- Do not register processors that cannot be onlined for x2APIC
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-boot-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot updates from Ingo Molnar:
- Robustify/fix calling startup_{32,64}() from the decompressor code,
and removing x86 quirk from scripts/head-object-list.txt as a result.
- Do not register processors that cannot be onlined for x2APIC
* tag 'x86-boot-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/acpi/boot: Do not register processors that cannot be onlined for x2APIC
scripts/head-object-list: Remove x86 from the list
x86/boot: Robustify calling startup_{32,64}() from the decompressor code
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-asm-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:
"Header fixes and a DocBook fix"
* tag 'x86-asm-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/lib: Fix compiler and kernel-doc warnings
x86/lib: Include <asm/misc.h> to fix a missing prototypes warning at build time
- Improve the scalability of the CFS bandwidth unthrottling logic
with large number of CPUs.
- Fix & rework various cpuidle routines, simplify interaction with
the generic scheduler code. Add __cpuidle methods as noinstr to
objtool's noinstr detection and fix boatloads of cpuidle bugs & quirks.
- Add new ABI: introduce MEMBARRIER_CMD_GET_REGISTRATIONS,
to query previously issued registrations.
- Limit scheduler slice duration to the sysctl_sched_latency period,
to improve scheduling granularity with a large number of SCHED_IDLE
tasks.
- Debuggability enhancement on sys_exit(): warn about disabled IRQs,
but also enable them to prevent a cascade of followup problems and
repeat warnings.
- Fix the rescheduling logic in prio_changed_dl().
- Micro-optimize cpufreq and sched-util methods.
- Micro-optimize ttwu_runnable()
- Micro-optimize the idle-scanning in update_numa_stats(),
select_idle_capacity() and steal_cookie_task().
- Update the RSEQ code & self-tests
- Constify various scheduler methods
- Remove unused methods
- Refine __init tags
- Documentation updates
- ... Misc other cleanups, fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
- Improve the scalability of the CFS bandwidth unthrottling logic with
large number of CPUs.
- Fix & rework various cpuidle routines, simplify interaction with the
generic scheduler code. Add __cpuidle methods as noinstr to objtool's
noinstr detection and fix boatloads of cpuidle bugs & quirks.
- Add new ABI: introduce MEMBARRIER_CMD_GET_REGISTRATIONS, to query
previously issued registrations.
- Limit scheduler slice duration to the sysctl_sched_latency period, to
improve scheduling granularity with a large number of SCHED_IDLE
tasks.
- Debuggability enhancement on sys_exit(): warn about disabled IRQs,
but also enable them to prevent a cascade of followup problems and
repeat warnings.
- Fix the rescheduling logic in prio_changed_dl().
- Micro-optimize cpufreq and sched-util methods.
- Micro-optimize ttwu_runnable()
- Micro-optimize the idle-scanning in update_numa_stats(),
select_idle_capacity() and steal_cookie_task().
- Update the RSEQ code & self-tests
- Constify various scheduler methods
- Remove unused methods
- Refine __init tags
- Documentation updates
- Misc other cleanups, fixes
* tag 'sched-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (110 commits)
sched/rt: pick_next_rt_entity(): check list_entry
sched/deadline: Add more reschedule cases to prio_changed_dl()
sched/fair: sanitize vruntime of entity being placed
sched/fair: Remove capacity inversion detection
sched/fair: unlink misfit task from cpu overutilized
objtool: mem*() are not uaccess safe
cpuidle: Fix poll_idle() noinstr annotation
sched/clock: Make local_clock() noinstr
sched/clock/x86: Mark sched_clock() noinstr
x86/pvclock: Improve atomic update of last_value in pvclock_clocksource_read()
x86/atomics: Always inline arch_atomic64*()
cpuidle: tracing, preempt: Squash _rcuidle tracing
cpuidle: tracing: Warn about !rcu_is_watching()
cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG
cpuidle: drivers: firmware: psci: Dont instrument suspend code
KVM: selftests: Fix build of rseq test
exit: Detect and fix irq disabled state in oops
cpuidle, arm64: Fix the ARM64 cpuidle logic
cpuidle: mvebu: Fix duplicate flags assignment
sched/fair: Limit sched slice duration
...
- Optimize perf_sample_data layout
- Prepare sample data handling for BPF integration
- Update the x86 PMU driver for Intel Meteor Lake
- Restructure the x86 uncore code to fix a SPR (Sapphire Rapids)
discovery breakage
- Fix the x86 Zhaoxin PMU driver
- Cleanups
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
- Optimize perf_sample_data layout
- Prepare sample data handling for BPF integration
- Update the x86 PMU driver for Intel Meteor Lake
- Restructure the x86 uncore code to fix a SPR (Sapphire Rapids)
discovery breakage
- Fix the x86 Zhaoxin PMU driver
- Cleanups
* tag 'perf-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
perf/x86/intel/uncore: Add Meteor Lake support
x86/perf/zhaoxin: Add stepping check for ZXC
perf/x86/intel/ds: Fix the conversion from TSC to perf time
perf/x86/uncore: Don't WARN_ON_ONCE() for a broken discovery table
perf/x86/uncore: Add a quirk for UPI on SPR
perf/x86/uncore: Ignore broken units in discovery table
perf/x86/uncore: Fix potential NULL pointer in uncore_get_alias_name
perf/x86/uncore: Factor out uncore_device_to_die()
perf/core: Call perf_prepare_sample() before running BPF
perf/core: Introduce perf_prepare_header()
perf/core: Do not pass header for sample ID init
perf/core: Set data->sample_flags in perf_prepare_sample()
perf/core: Add perf_sample_save_brstack() helper
perf/core: Add perf_sample_save_raw_data() helper
perf/core: Add perf_sample_save_callchain() helper
perf/core: Save the dynamic parts of sample data size
x86/kprobes: Use switch-case for 0xFF opcodes in prepare_emulation
perf/core: Change the layout of perf_sample_data
perf/x86/msr: Add Meteor Lake support
perf/x86/cstate: Add Meteor Lake support
...
Only three minor changes: a cross-platform series from Mike Rapoport to
consolidate asm/agp.h between architectures, and a correctness change
for __generic_cmpxchg_local() from Matt Evans.
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Merge tag 'asm-generic-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic cleanups from Arnd Bergmann:
"Only three minor changes: a cross-platform series from Mike Rapoport
to consolidate asm/agp.h between architectures, and a correctness
change for __generic_cmpxchg_local() from Matt Evans"
* tag 'asm-generic-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
char/agp: introduce asm-generic/agp.h
char/agp: consolidate {alloc,free}_gatt_pages()
locking/atomic: cmpxchg: Make __generic_cmpxchg_local compare against zero-extended 'old' value
About a quarter of the changes are for 32-bit arm, mostly filling in
device support for existing machines and adding minor cleanups, mostly
for Qualcomm and Samsung based machines.
Two new 32-bit SoCs are added, both are quad-core Cortex-A7 chips from
Rockchips that have been around for a while but were lacking kernel
support so far: RV1126 is a Vision SoC with an NPU and is used in the
Edgeble Neural Compute Module 2(Neu2) board, while RK3128 is design for
TV boxes and so far only comes with a dts for its refernece design.
The other 32-bit boards that were added are two ASpeed AST2600 based BMC
boards, the Microchip sam9x60_curiosity development board (Armv5 based!),
the Enclustra PE1 FPGA-SoM baseboard, and a few more boards for i.MX53
and i.MX6ULL.
On the RISC-V side, there are fewer patches, but a total of ten new
single-board computers based on variations of the Allwinner D1/T113 chip,
plus one more board based on Microchip Polarfire.
As usual, arm64 has by far the most changes here, with over 700 non-merge
changesets, among them over 400 alone for Qualcomm. The newly added SoCs
this time are all recent high-end embedded SoCs for various markets,
each on comes with support for its reference board:
- Qualcomm SM8550 (Snapdragon 8 Gen 2) for mobile phones
- Qualcomm QDU1000/QRU1000 5G RAN platform
- Rockchips RK3588/RK3588s for tablets, chromebooks and SBCs
- TI J784S4 for industrial and automotive applications
In total, there are 46 new arm64 machines:
- Reference platforms for each of the five new SoCs
- Three Amlogic based development boards
- Six embedded machines based on NXP i.MX8MM and i.MX8MP
- The Mediatek mt7986a based Banana Pi R3 router
- Six tablets based on Qualcomm MSM8916 (Snapdragon 410),
SM6115 (Snapdragon 662) and SM8250 (Snapdragon 865)
- Two LTE dongles, also based on MSM8916
- Seven mobile phones, based on Qualcomm MSM8953 (Snapdragon 610),
SDM450 and SDM632
- Three chromebooks based on Qualcomm SC7280 (Snapdragon 7c)
- Nine development boards based on Rockchips RK3588, RK3568,
RK3566 and RK3328.
- Five development machines based on TI K3 (AM642/AM654/AM68/AM69)
The cleanup of dtc warnings continues across all platforms, adding
to the total number of changes.
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Merge tag 'soc-dt-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC DT updates from Arnd Bergmann:
"About a quarter of the changes are for 32-bit arm, mostly filling in
device support for existing machines and adding minor cleanups, mostly
for Qualcomm and Samsung based machines.
Two new 32-bit SoCs are added, both are quad-core Cortex-A7 chips from
Rockchips that have been around for a while but were lacking kernel
support so far: RV1126 is a Vision SoC with an NPU and is used in the
Edgeble Neural Compute Module 2(Neu2) board, while RK3128 is design
for TV boxes and so far only comes with a dts for its refernece
design.
The other 32-bit boards that were added are two ASpeed AST2600 based
BMC boards, the Microchip sam9x60_curiosity development board (Armv5
based!), the Enclustra PE1 FPGA-SoM baseboard, and a few more boards
for i.MX53 and i.MX6ULL.
On the RISC-V side, there are fewer patches, but a total of ten new
single-board computers based on variations of the Allwinner D1/T113
chip, plus one more board based on Microchip Polarfire.
As usual, arm64 has by far the most changes here, with over 700
non-merge changesets, among them over 400 alone for Qualcomm. The
newly added SoCs this time are all recent high-end embedded SoCs for
various markets, each on comes with support for its reference board:
- Qualcomm SM8550 (Snapdragon 8 Gen 2) for mobile phones
- Qualcomm QDU1000/QRU1000 5G RAN platform
- Rockchips RK3588/RK3588s for tablets, chromebooks and SBCs
- TI J784S4 for industrial and automotive applications
In total, there are 46 new arm64 machines:
- Reference platforms for each of the five new SoCs
- Three Amlogic based development boards
- Six embedded machines based on NXP i.MX8MM and i.MX8MP
- The Mediatek mt7986a based Banana Pi R3 router
- Six tablets based on Qualcomm MSM8916 (Snapdragon 410), SM6115
(Snapdragon 662) and SM8250 (Snapdragon 865)
- Two LTE dongles, also based on MSM8916
- Seven mobile phones, based on Qualcomm MSM8953 (Snapdragon 610),
SDM450 and SDM632
- Three chromebooks based on Qualcomm SC7280 (Snapdragon 7c)
- Nine development boards based on Rockchips RK3588, RK3568, RK3566
and RK3328.
- Five development machines based on TI K3 (AM642/AM654/AM68/AM69)
The cleanup of dtc warnings continues across all platforms, adding to
the total number of changes"
* tag 'soc-dt-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (1035 commits)
dt-bindings: riscv: correct starfive visionfive 2 compatibles
ARM: dts: socfpga: Add enclustra PE1 devicetree
dt-bindings: altera: Add enclustra mercury PE1
arm64: dts: qcom: msm8996: align RPM G-Link clock-controller node with bindings
arm64: dts: qcom: qcs404: align RPM G-Link node with bindings
arm64: dts: qcom: ipq6018: align RPM G-Link node with bindings
arm64: dts: qcom: sm8550: remove invalid interconnect property from cryptobam
arm64: dts: qcom: sc7280: Adjust zombie PWM frequency
arm64: dts: qcom: sc8280xp-pmics: Specify interrupt parent explicitly
arm64: dts: qcom: sm7225-fairphone-fp4: enable remaining i2c busses
arm64: dts: qcom: sm7225-fairphone-fp4: move status property down
arm64: dts: qcom: pmk8350: Use the correct PON compatible
arm64: dts: qcom: sc8280xp-x13s: Enable external display
arm64: dts: qcom: sc8280xp-crd: Introduce pmic_glink
arm64: dts: qcom: sc8280xp: Add USB-C-related DP blocks
arm64: dts: qcom: sm8350-hdk: enable GPU
arm64: dts: qcom: sm8350: add GPU, GMU, GPU CC and SMMU nodes
arm64: dts: qcom: sm8350: finish reordering nodes
arm64: dts: qcom: sm8350: move more nodes to correct place
arm64: dts: qcom: sm8350: reorder device nodes
...
As usual, this branch contains all the patches to enable options
for newly added device drivers in the 32-bit and 64-bit defconfig
files.
I have sorted the files according to the changes to Kconfig files,
to make it easier to check what has changed compared to the 'make
savedefconfig' output.
The most notable change this time is a series from Mark Brown
to add a 'virtconfig' target for arm64, which is for the moment
the same as the 'defconfig' target but disables all the top-level
SoC specific options in order to have a smaller and faster
kernel build.
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Merge tag 'soc-defconfig-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM defconfigs updates from Arnd Bergmann:
"As usual, this contains all the patches to enable options for newly
added device drivers in the 32-bit and 64-bit defconfig files.
I have sorted the files according to the changes to Kconfig files,
to make it easier to check what has changed compared to the 'make
savedefconfig' output.
The most notable change this time is a series from Mark Brown to add
a 'virtconfig' target for arm64, which is for the moment the same as
the 'defconfig' target but disables all the top-level SoC specific
options in order to have a smaller and faster kernel build"
* tag 'soc-defconfig-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (39 commits)
arm64: defconfig: enable drivers required by the Qualcomm SA8775P platform
arm64: defconfig: Enable DisplayPort on SC8280XP laptops
arm64: configs: Add virtconfig
kbuild: Provide a version of merge_into_defconfig without override warnings
scripts: merge_config: Add option to suppress warning on overrides
ARM: reorder defconfig files
arm64: reorder defconfig
arm64: defconfig: enable Qualcomm SDAM nvmem driver
arm64: defconfig: enable SM8450 DISPCC clock driver
ARM: defconfig: Add IOSCHED_BFQ to the default configs
ARM: configs: multi_v7: enable NVMEM driver for STM32
ARM: Add wpcm450_defconfig for Nuvoton WPCM450
arm64: defconfig: Enable DMA_RESTRICTED_POOL
arm64: defconfig: Enable missing configs for mt8192-asurada
riscv: defconfig: Enable the Allwinner D1 platform and drivers
ARM: imx_v6_v7_defconfig: Don't enable PROVE_LOCKING
ARM: multi_v7_defconfig: Add GXP Fan and SPI support
ARM: add multi_v7_lpae_defconfig
kbuild: Add config fragment merge functionality
ARM: multi_v7_defconfig: Add options to support TQMLS102xA series
...
The majority of the changes are for the OMAP2 platform, mostly
removing some dead code that got left behind from previous cleanups.
Aside from that, there are very minor updates and correctness fixes for
Zynq, i.MX, Samsung, Broadcom, AT91, ep93xx, and OMAP1.
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Merge tag 'arm-soc-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC updates from Arnd Bergmann:
"The majority of the changes are for the OMAP2 platform, mostly
removing some dead code that got left behind from previous cleanups.
Aside from that, there are very minor updates and correctness fixes
for Zynq, i.MX, Samsung, Broadcom, AT91, ep93xx, and OMAP1"
* tag 'arm-soc-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (26 commits)
dt-bindings: soc: samsung: exynos-pmu: allow phys as child
ARM: imx: mach-imx6ul: add imx6ulz support
ARM: imx: Call ida_simple_remove() for ida_simple_get
arm64: drop redundant "ARMv8" from Kconfig option title
ARM: ep93xx: Convert to use descriptors for GPIO LEDs
ARM: s3c: fix s3c64xx_set_timer_source prototype
ARM: OMAP2+: Fix spelling typos in comment
ARM: OMAP2+: Remove unneeded #include <linux/pinctrl/machine.h>
ARM: OMAP2+: Remove unneeded #include <linux/pinctrl/pinmux.h>
ARM: OMAP1: call platform_device_put() in error case in omap1_dm_timer_init()
ARM: BCM63xx: remove useless goto statement
ARM: omap2: make functions static
ARM: omap2: remove unused omap2_pm_init
ARM: omap2: remove unused declarations
ARM: omap2: remove unused functions
ARM: omap2: smartreflex: remove on_init control
ARM: omap2: remove APLL control
ARM: omap2: simplify clock2xxx header
ARM: omap2: remove unused omap_hwmod_reset.c
ARM: omap2: remove unused headers
...
This is a follow-up to the deprecation of most of the old-style board
files that was merged in linux-6.0, removing them for good.
This branch is almost exclusively dead code removal based on those
annotations. Some device driver removals went through separate subsystem
trees, but the majority is in the same branch, in order to better handle
dependencies between the patches and avoid breaking bisection.
Unfortunately that leads to merge conflicts against other changes in the
subsystem trees, but they should all be trivial to resolve by removing
the files.
See commit 7d0d3fa733 ("Merge tag 'arm-boardfiles-6.0' of
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc") for the
description of which machines were marked unused and are now removed. The
only removals that got postponed are Terastation WXL (mv78xx0) and
Jornada720 (StrongARM1100), which turned out to still have potential
users.
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Merge tag 'arm-boardfile-remove-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC boardfile updates from Arnd Bergmann
"Unused boardfile removal for 6.3
This is a follow-up to the deprecation of most of the old-style board
files that was merged in linux-6.0, removing them for good.
This branch is almost exclusively dead code removal based on those
annotations. Some device driver removals went through separate
subsystem trees, but the majority is in the same branch, in order to
better handle dependencies between the patches and avoid breaking
bisection.
Unfortunately that leads to merge conflicts against other changes in
the subsystem trees, but they should all be trivial to resolve by
removing the files.
See commit 7d0d3fa733 ("Merge tag 'arm-boardfiles-6.0' of
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc") for the
description of which machines were marked unused and are now removed.
The only removals that got postponed are Terastation WXL (mv78xx0) and
Jornada720 (StrongARM1100), which turned out to still have potential
users"
* tag 'arm-boardfile-remove-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (91 commits)
mmc: omap: drop TPS65010 dependency
ARM: pxa: restore mfp-pxa320.h
usb: ohci-omap: avoid unused-variable warning
ARM: debug: remove references in DEBUG_UART_8250_SHIFT to removed configs
ARM: s3c: remove obsolete s3c-cpu-freq header
MAINTAINERS: adjust SAMSUNG SOC CLOCK DRIVERS after s3c24xx support removal
MAINTAINERS: update file entries after arm multi-platform rework and mach-pxa removal
ARM: remove CONFIG_UNUSED_BOARD_FILES
mfd: remove htc-pasic3 driver
w1: remove ds1wm driver
usb: remove ohci-tmio driver
fbdev: remove w100fb driver
fbdev: remove tmiofb driver
mmc: remove tmio_mmc driver
mfd: remove ucb1400 support
mfd: remove toshiba tmio drivers
rtc: remove v3020 driver
power: remove pda_power supply driver
ASoC: pxa: remove unused board support
pcmcia: remove unused pxa/sa1100 drivers
...
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Merge tag 'for-6.3/block-2023-02-16' of git://git.kernel.dk/linux
Pull block updates from Jens Axboe:
- NVMe updates via Christoph:
- Small improvements to the logging functionality (Amit Engel)
- Authentication cleanups (Hannes Reinecke)
- Cleanup and optimize the DMA mapping cod in the PCIe driver
(Keith Busch)
- Work around the command effects for Format NVM (Keith Busch)
- Misc cleanups (Keith Busch, Christoph Hellwig)
- Fix and cleanup freeing single sgl (Keith Busch)
- MD updates via Song:
- Fix a rare crash during the takeover process
- Don't update recovery_cp when curr_resync is ACTIVE
- Free writes_pending in md_stop
- Change active_io to percpu
- Updates to drbd, inching us closer to unifying the out-of-tree driver
with the in-tree one (Andreas, Christoph, Lars, Robert)
- BFQ update adding support for multi-actuator drives (Paolo, Federico,
Davide)
- Make brd compliant with REQ_NOWAIT (me)
- Fix for IOPOLL and queue entering, fixing stalled IO waiting on
timeouts (me)
- Fix for REQ_NOWAIT with multiple bios (me)
- Fix memory leak in blktrace cleanup (Greg)
- Clean up sbitmap and fix a potential hang (Kemeng)
- Clean up some bits in BFQ, and fix a bug in the request injection
(Kemeng)
- Clean up the request allocation and issue code, and fix some bugs
related to that (Kemeng)
- ublk updates and fixes:
- Add support for unprivileged ublk (Ming)
- Improve device deletion handling (Ming)
- Misc (Liu, Ziyang)
- s390 dasd fixes (Alexander, Qiheng)
- Improve utility of request caching and fixes (Anuj, Xiao)
- zoned cleanups (Pankaj)
- More constification for kobjs (Thomas)
- blk-iocost cleanups (Yu)
- Remove bio splitting from drivers that don't need it (Christoph)
- Switch blk-cgroups to use struct gendisk. Some of this is now
incomplete as select late reverts were done. (Christoph)
- Add bvec initialization helpers, and convert callers to use that
rather than open-coding it (Christoph)
- Misc fixes and cleanups (Jinke, Keith, Arnd, Bart, Li, Martin,
Matthew, Ulf, Zhong)
* tag 'for-6.3/block-2023-02-16' of git://git.kernel.dk/linux: (169 commits)
brd: use radix_tree_maybe_preload instead of radix_tree_preload
block: use proper return value from bio_failfast()
block: bio-integrity: Copy flags when bio_integrity_payload is cloned
block: Fix io statistics for cgroup in throttle path
brd: mark as nowait compatible
brd: check for REQ_NOWAIT and set correct page allocation mask
brd: return 0/-error from brd_insert_page()
block: sync mixed merged request's failfast with 1st bio's
Revert "blk-cgroup: pin the gendisk in struct blkcg_gq"
Revert "blk-cgroup: pass a gendisk to blkg_lookup"
Revert "blk-cgroup: delay blk-cgroup initialization until add_disk"
Revert "blk-cgroup: delay calling blkcg_exit_disk until disk_release"
Revert "blk-cgroup: move the cgroup information to struct gendisk"
nvme-pci: remove iod use_sgls
nvme-pci: fix freeing single sgl
block: ublk: check IO buffer based on flag need_get_data
s390/dasd: Fix potential memleak in dasd_eckd_init()
s390/dasd: sort out physical vs virtual pointers usage
block: Remove the ALLOC_CACHE_SLACK constant
block: make kobj_type structures constant
...
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Merge tag 'for-6.3/dio-2023-02-16' of git://git.kernel.dk/linux
Pull legacy dio update from Jens Axboe:
"We only have a few file systems that use the old dio code, make them
select it rather than build it unconditionally"
* tag 'for-6.3/dio-2023-02-16' of git://git.kernel.dk/linux:
fs: build the legacy direct I/O code conditionally
fs: move sb_init_dio_done_wq out of direct-io.c
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Merge tag 'for-6.3/iter-ubuf-2023-02-16' of git://git.kernel.dk/linux
Pull io_uring ITER_UBUF conversion from Jens Axboe:
"Since we now have ITER_UBUF available, switch to using it for single
ranges as it's more efficient than ITER_IOVEC for that"
* tag 'for-6.3/iter-ubuf-2023-02-16' of git://git.kernel.dk/linux:
block: use iter_ubuf for single range
iov_iter: move iter_ubuf check inside restore WARN
io_uring: use iter_ubuf for single range imports
io_uring: switch network send/recv to ITER_UBUF
iov: add import_ubuf()
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Merge tag 'for-6.3/io_uring-2023-02-16' of git://git.kernel.dk/linux
Pull io_uring updates from Jens Axboe:
- Cleanup series making the async prep and handling of
REQ_F_FORCE_ASYNC easier to follow and verify (Dylan)
- Enable specifying specific flags for OP_MSG_RING (Breno)
- Enable use of KASAN with the internal request cache (Breno)
- Split the opcode definition structs into a hot and cold part (Breno)
- OP_MSG_RING fixes (Pavel, me)
- Fix an issue with IOPOLL cancelation and PREEMPT_NONE (me)
- Handle TIF_NOTIFY_RESUME for the io-wq threads that never return to
userspace (me)
- Add support for using io_uring_register() with a registered ring fd
(Josh)
- Improve handling of poll on the ring fd (Pavel)
- Series improving the task_work handling (Pavel)
- Misc cleanups, fixes, improvements (Dmitrii, Quanfa, Richard, Pavel,
me)
* tag 'for-6.3/io_uring-2023-02-16' of git://git.kernel.dk/linux: (51 commits)
io_uring: Support calling io_uring_register with a registered ring fd
io_uring,audit: don't log IORING_OP_MADVISE
io_uring: mark task TASK_RUNNING before handling resume/task work
io_uring: always go async for unsupported open flags
io_uring: always go async for unsupported fadvise flags
io_uring: for requests that require async, force it
io_uring: if a linked request has REQ_F_FORCE_ASYNC then run it async
io_uring: add reschedule point to handle_tw_list()
io_uring: add a conditional reschedule to the IOPOLL cancelation loop
io_uring: return normal tw run linking optimisation
io_uring: refactor tctx_task_work
io_uring: refactor io_put_task helpers
io_uring: refactor req allocation
io_uring: improve io_get_sqe
io_uring: kill outdated comment about overflow flush
io_uring: use user visible tail in io_uring_poll()
io_uring: pass in io_issue_def to io_assign_file()
io_uring: Enable KASAN for request cache
io_uring: handle TIF_NOTIFY_RESUME when checking for task_work
io_uring/msg-ring: ensure flags passing works for task_work completions
...
This patch set fixes some races in the lowcomms startup and shutdown code
that were found by targetted stress testing that quickly and repeatedly
joins and leaves lockspaces.
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Merge tag 'dlm-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm
Pull dlm updates from David Teigland:
"This fixes some races in the lowcomms startup and shutdown code that
were found by targeted stress testing that quickly and repeatedly
joins and leaves lockspaces"
* tag 'dlm-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
fs: dlm: remove unnecessary waker_up() calls
fs: dlm: move state change into else branch
fs: dlm: remove newline in log_print
fs: dlm: reduce the shutdown timeout to 5 secs
fs: dlm: make dlm sequence id more robust
fs: dlm: wait until all midcomms nodes detect version
fs: dlm: ignore unexpected non dlm opts msgs
fs: dlm: bring back previous shutdown handling
fs: dlm: send FIN ack back in right cases
fs: dlm: move sending fin message into state change handling
fs: dlm: don't set stop rx flag after node reset
fs: dlm: fix race setting stop tx flag
fs: dlm: be sure to call dlm_send_queue_flush()
fs: dlm: fix use after free in midcomms commit
fs: dlm: start midcomms before scand
fs/dlm: Remove "select SRCU"
fs: dlm: fix return value check in dlm_memory_init()
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Merge tag 'for-6.3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"The usual mix of performance improvements and new features.
The core change is reworking how checksums are processed, with
followup cleanups and simplifications. There are two minor changes in
block layer and iomap code.
Features:
- block group allocation class heuristics:
- pack files by size (up to 128k, up to 8M, more) to avoid
fragmentation in block groups, assuming that file size and life
time is correlated, in particular this may help during balance
- with tracepoints and extensible in the future
Performance:
- send: cache directory utimes and only emit the command when
necessary
- speedup up to 10x
- smaller final stream produced (no redundant utimes commands
issued)
- compatibility not affected
- fiemap: skip backref checks for shared leaves
- speedup 3x on sample filesystem with all leaves shared (e.g. on
snapshots)
- micro optimized b-tree key lookup, speedup in metadata operations
(sample benchmark: fs_mark +10% of files/sec)
Core changes:
- change where checksumming is done in the io path:
- checksum and read repair does verification at lower layer
- cascaded cleanups and simplifications
- raid56 refactoring and cleanups
Fixes:
- sysfs: make sure that a run-time change of a feature is correctly
tracked by the feature files
- scrub: better reporting of tree block errors
Other:
- locally enable -Wmaybe-uninitialized after fixing all warnings
- misc cleanups, spelling fixes
Other code:
- block: export bio_split_rw
- iomap: remove IOMAP_F_ZONE_APPEND"
* tag 'for-6.3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (109 commits)
btrfs: make kobj_type structures constant
btrfs: remove the bdev argument to btrfs_rmap_block
btrfs: don't rely on unchanging ->bi_bdev for zone append remaps
btrfs: never return true for reads in btrfs_use_zone_append
btrfs: pass a btrfs_bio to btrfs_use_append
btrfs: set bbio->file_offset in alloc_new_bio
btrfs: use file_offset to limit bios size in calc_bio_boundaries
btrfs: do unsigned integer division in the extent buffer binary search loop
btrfs: eliminate extra call when doing binary search on extent buffer
btrfs: raid56: handle endio in scrub_rbio
btrfs: raid56: handle endio in recover_rbio
btrfs: raid56: handle endio in rmw_rbio
btrfs: raid56: submit the read bios from scrub_assemble_read_bios
btrfs: raid56: fold rmw_read_wait_recover into rmw_read_bios
btrfs: raid56: fold recover_assemble_read_bios into recover_rbio
btrfs: raid56: add a bio_list_put helper
btrfs: raid56: wait for I/O completion in submit_read_bios
btrfs: raid56: simplify code flow in rmw_rbio
btrfs: raid56: simplify error handling and code flow in raid56_parity_write
btrfs: replace btrfs_wait_tree_block_writeback by wait_on_extent_buffer_writeback
...
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Merge tag 'fixes_for_v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull UDF and ext2 fixes from Jan Kara:
- Rewrite of udf directory iteration code to address multiple syzbot
reports
- Fixes to udf extent handling and block mapping code to address
several syzbot reports and filesystem corruption issues uncovered by
fsx & fsstress
- Convert udf to kmap_local()
- Add sanity checks when loading udf bitmaps
- Drop old VARCONV support which I've never seen used and which was
broken for quite some years without anybody noticing
- Finish conversion of ext2 to kmap_local()
- One fix to mpage_writepages() on which other udf fixes depend
* tag 'fixes_for_v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: (78 commits)
udf: Avoid directory type conversion failure due to ENOMEM
udf: Use unsigned variables for size calculations
udf: remove reporting loc in debug output
udf: Check consistency of Space Bitmap Descriptor
udf: Fix file counting in LVID
udf: Limit file size to 4TB
udf: Don't return bh from udf_expand_dir_adinicb()
udf: Convert udf_expand_file_adinicb() to avoid kmap_atomic()
udf: Convert udf_adinicb_writepage() to memcpy_to_page()
udf: Switch udf_adinicb_readpage() to kmap_local_page()
udf: Move udf_adinicb_readpage() to inode.c
udf: Mark aops implementation static
udf: Switch to single address_space_operations
udf: Add handling of in-ICB files to udf_bmap()
udf: Convert all file types to use udf_write_end()
udf: Convert in-ICB files to use udf_write_begin()
udf: Convert in-ICB files to use udf_direct_IO()
udf: Convert in-ICB files to use udf_writepages()
udf: Unify .read_folio for normal and in-ICB files
udf: Fix off-by-one error when discarding preallocation
...
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Merge tag 'fsnotify_for_v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify updates from Jan Kara:
"Support for auditing decisions regarding fanotify permission events"
* tag 'fsnotify_for_v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fanotify,audit: Allow audit to use the full permission event response
fanotify: define struct members to hold response decision context
fanotify: Ensure consistent variable type for response
Fix the longstanding implementation limitation that fsverity was only
supported when the Merkle tree block size, filesystem block size, and
PAGE_SIZE were all equal. Specifically, add support for Merkle tree
block sizes less than PAGE_SIZE, and make ext4 support fsverity on
filesystems where the filesystem block size is less than PAGE_SIZE.
Effectively, this means that fsverity can now be used on systems with
non-4K pages, at least on ext4. These changes have been tested using
the verity group of xfstests, newly updated to cover the new code paths.
Also update fs/verity/ to support verifying data from large folios.
There's also a similar patch for fs/crypto/, to support decrypting data
from large folios, which I'm including in this pull request to avoid a
merge conflict between the fscrypt and fsverity branches.
There will be a merge conflict in fs/buffer.c with some of the foliation
work in the mm tree. Please use the merge resolution from linux-next.
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Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux
Pull fsverity updates from Eric Biggers:
"Fix the longstanding implementation limitation that fsverity was only
supported when the Merkle tree block size, filesystem block size, and
PAGE_SIZE were all equal.
Specifically, add support for Merkle tree block sizes less than
PAGE_SIZE, and make ext4 support fsverity on filesystems where the
filesystem block size is less than PAGE_SIZE.
Effectively, this means that fsverity can now be used on systems with
non-4K pages, at least on ext4. These changes have been tested using
the verity group of xfstests, newly updated to cover the new code
paths.
Also update fs/verity/ to support verifying data from large folios.
There's also a similar patch for fs/crypto/, to support decrypting
data from large folios, which I'm including in here to avoid a merge
conflict between the fscrypt and fsverity branches"
* tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux:
fscrypt: support decrypting data from large folios
fsverity: support verifying data from large folios
fsverity.rst: update git repo URL for fsverity-utils
ext4: allow verity with fs block size < PAGE_SIZE
fs/buffer.c: support fsverity in block_read_full_folio()
f2fs: simplify f2fs_readpage_limit()
ext4: simplify ext4_readpage_limit()
fsverity: support enabling with tree block size < PAGE_SIZE
fsverity: support verification with tree block size < PAGE_SIZE
fsverity: replace fsverity_hash_page() with fsverity_hash_block()
fsverity: use EFBIG for file too large to enable verity
fsverity: store log2(digest_size) precomputed
fsverity: simplify Merkle tree readahead size calculation
fsverity: use unsigned long for level_start
fsverity: remove debug messages and CONFIG_FS_VERITY_DEBUG
fsverity: pass pos and size to ->write_merkle_tree_block
fsverity: optimize fsverity_cleanup_inode() on non-verity files
fsverity: optimize fsverity_prepare_setattr() on non-verity files
fsverity: optimize fsverity_file_open() on non-verity files
Simplify the implementation of the test_dummy_encryption mount option by
adding the "test dummy key" on-demand.
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Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux
Pull fscrypt updates from Eric Biggers:
"Simplify the implementation of the test_dummy_encryption mount option
by adding the 'test dummy key' on-demand"
* tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux:
fscrypt: clean up fscrypt_add_test_dummy_key()
fs/super.c: stop calling fscrypt_destroy_keyring() from __put_super()
f2fs: stop calling fscrypt_add_test_dummy_key()
ext4: stop calling fscrypt_add_test_dummy_key()
fscrypt: add the test dummy encryption key on-demand
- Add per-cpu kthreads for low-latency decompression for Android
use cases;
- Get rid of tagged pointer helpers since they are rarely used now;
- Several code cleanups to reduce codebase;
- Documentation and MAINTAINERS updates.
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Merge tag 'erofs-for-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs updates from Gao Xiang:
"The most noticeable feature for this cycle is per-CPU kthread
decompression since Android use cases need low-latency I/O handling in
order to ensure the app runtime performance, currently unbounded
workqueue latencies are not quite good for production on many aarch64
hardwares and thus we need to introduce a deterministic expectation
for these. Decompression is CPU-intensive and it is sleepable for
EROFS, so other alternatives like decompression under softirq contexts
are not considered. More details are in the corresponding commit
message.
Others are random cleanups around the whole codebase and we will
continue to clean up further in the next few months.
Due to Lunar New Year holidays, some other new features were not
completely reviewed and solidified as expected and we may delay them
into the next version.
Summary:
- Add per-cpu kthreads for low-latency decompression for Android use
cases
- Get rid of tagged pointer helpers since they are rarely used now
- Several code cleanups to reduce codebase
- Documentation and MAINTAINERS updates"
* tag 'erofs-for-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs: (21 commits)
erofs: fix an error code in z_erofs_init_zip_subsystem()
erofs: unify anonymous inodes for blob
erofs: relinquish volume with mutex held
erofs: maintain cookies of share domain in self-contained list
erofs: remove unused device mapping in meta routine
MAINTAINERS: erofs: Add Documentation/ABI/testing/sysfs-fs-erofs
Documentation/ABI: sysfs-fs-erofs: update supported features
erofs: remove unused EROFS_GET_BLOCKS_RAW flag
erofs: update print symbols for various flags in trace
erofs: make kobj_type structures constant
erofs: add per-cpu threads for decompression as an option
erofs: tidy up internal.h
erofs: get rid of z_erofs_do_map_blocks() forward declaration
erofs: move zdata.h into zdata.c
erofs: remove tagged pointer helpers
erofs: avoid tagged pointers to mark sync decompression
erofs: get rid of erofs_inode_datablocks()
erofs: simplify iloc()
erofs: get rid of debug_one_dentry()
erofs: remove linux/buffer_head.h dependency
...
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Merge tag 'fs.acl.v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping
Pull vfs acl update from Christian Brauner:
"This contains a single update to the internal get acl method and
replaces an open-coded cmpxchg() comparison with with try_cmpxchg().
It's clearer and also beneficial on some architectures"
* tag 'fs.acl.v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping:
posix_acl: Use try_cmpxchg in get_acl
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Merge tag 'fs.v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping
Pull vfs hardening update from Christian Brauner:
"Jan pointed out that during shutdown both filp_close() and super block
destruction will use basic printk logging when bugs are detected. This
causes issues in a few scenarios:
- Tools like syzkaller cannot figure out that the logged message
indicates a bug.
- Users that explicitly opt in to have the kernel bug on data
corruption by selecting CONFIG_BUG_ON_DATA_CORRUPTION should see
the kernel crash when they did actually select that option.
- When there are busy inodes after the superblock is shut down later
access to such a busy inodes walks through freed memory. It would
be better to cleanly crash instead.
All of this can be addressed by using the already existing
CHECK_DATA_CORRUPTION() macro in these places when kernel bugs are
detected. Its logging improvement is useful for all users.
Otherwise this only has a meaningful behavioral effect when users do
select CONFIG_BUG_ON_DATA_CORRUPTION which means this is backward
compatible for regular users"
* tag 'fs.v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping:
fs: Use CHECK_DATA_CORRUPTION() when kernel bugs are detected
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Merge tag 'fs.idmapped.v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping
Pull vfs idmapping updates from Christian Brauner:
- Last cycle we introduced the dedicated struct mnt_idmap type for
mount idmapping and the required infrastucture in 256c8aed2b ("fs:
introduce dedicated idmap type for mounts"). As promised in last
cycle's pull request message this converts everything to rely on
struct mnt_idmap.
Currently we still pass around the plain namespace that was attached
to a mount. This is in general pretty convenient but it makes it easy
to conflate namespaces that are relevant on the filesystem with
namespaces that are relevant on the mount level. Especially for
non-vfs developers without detailed knowledge in this area this was a
potential source for bugs.
This finishes the conversion. Instead of passing the plain namespace
around this updates all places that currently take a pointer to a
mnt_userns with a pointer to struct mnt_idmap.
Now that the conversion is done all helpers down to the really
low-level helpers only accept a struct mnt_idmap argument instead of
two namespace arguments.
Conflating mount and other idmappings will now cause the compiler to
complain loudly thus eliminating the possibility of any bugs. This
makes it impossible for filesystem developers to mix up mount and
filesystem idmappings as they are two distinct types and require
distinct helpers that cannot be used interchangeably.
Everything associated with struct mnt_idmap is moved into a single
separate file. With that change no code can poke around in struct
mnt_idmap. It can only be interacted with through dedicated helpers.
That means all filesystems are and all of the vfs is completely
oblivious to the actual implementation of idmappings.
We are now also able to extend struct mnt_idmap as we see fit. For
example, we can decouple it completely from namespaces for users that
don't require or don't want to use them at all. We can also extend
the concept of idmappings so we can cover filesystem specific
requirements.
In combination with the vfs{g,u}id_t work we finished in v6.2 this
makes this feature substantially more robust and thus difficult to
implement wrong by a given filesystem and also protects the vfs.
- Enable idmapped mounts for tmpfs and fulfill a longstanding request.
A long-standing request from users had been to make it possible to
create idmapped mounts for tmpfs. For example, to share the host's
tmpfs mount between multiple sandboxes. This is a prerequisite for
some advanced Kubernetes cases. Systemd also has a range of use-cases
to increase service isolation. And there are more users of this.
However, with all of the other work going on this was way down on the
priority list but luckily someone other than ourselves picked this
up.
As usual the patch is tiny as all the infrastructure work had been
done multiple kernel releases ago. In addition to all the tests that
we already have I requested that Rodrigo add a dedicated tmpfs
testsuite for idmapped mounts to xfstests. It is to be included into
xfstests during the v6.3 development cycle. This should add a slew of
additional tests.
* tag 'fs.idmapped.v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping: (26 commits)
shmem: support idmapped mounts for tmpfs
fs: move mnt_idmap
fs: port vfs{g,u}id helpers to mnt_idmap
fs: port fs{g,u}id helpers to mnt_idmap
fs: port i_{g,u}id_into_vfs{g,u}id() to mnt_idmap
fs: port i_{g,u}id_{needs_}update() to mnt_idmap
quota: port to mnt_idmap
fs: port privilege checking helpers to mnt_idmap
fs: port inode_owner_or_capable() to mnt_idmap
fs: port inode_init_owner() to mnt_idmap
fs: port acl to mnt_idmap
fs: port xattr to mnt_idmap
fs: port ->permission() to pass mnt_idmap
fs: port ->fileattr_set() to pass mnt_idmap
fs: port ->set_acl() to pass mnt_idmap
fs: port ->get_acl() to pass mnt_idmap
fs: port ->tmpfile() to pass mnt_idmap
fs: port ->rename() to pass mnt_idmap
fs: port ->mknod() to pass mnt_idmap
fs: port ->mkdir() to pass mnt_idmap
...
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Merge tag 'iversion-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
Pull i_version updates from Jeff Layton:
"This overhauls how we handle i_version queries from nfsd.
Instead of having special routines and grabbing the i_version field
directly out of the inode in some cases, we've moved most of the
handling into the various filesystems' getattr operations. As a bonus,
this makes ceph's change attribute usable by knfsd as well.
This should pave the way for future work to make this value queryable
by userland, and to make it more resilient against rolling back on a
crash"
* tag 'iversion-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
nfsd: remove fetch_iversion export operation
nfsd: use the getattr operation to fetch i_version
nfsd: move nfsd4_change_attribute to nfsfh.c
ceph: report the inode version in getattr if requested
nfs: report the inode version in getattr if requested
vfs: plumb i_version handling into struct kstat
fs: clarify when the i_version counter must be updated
fs: uninline inode_query_iversion
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Merge tag 'locks-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
Pull file locking updates from Jeff Layton:
"The main change here is that I've broken out most of the file locking
definitions into a new header file. I also went ahead and completed
the removal of locks_inode function"
* tag 'locks-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
fs: remove locks_inode
filelock: move file locking definitions to separate header file
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Merge tag 'tpm-v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd
Pull tpm updates from Jarkko Sakkinen:
"In additon to bug fixes, these are noteworthy changes:
- In TPM I2C drivers, migrate from probe() to probe_new() (a new
driver model in I2C).
- TPM CRB: Pluton support
- Add duplicate hash detection to the blacklist keyring in order to
give more meaningful klog output than e.g. [1]"
Link: https://askubuntu.com/questions/1436856/ubuntu-22-10-blacklist-problem-blacklisting-hash-13-message-on-boot [1]
* tag 'tpm-v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
tpm: add vendor flag to command code validation
tpm: Add reserved memory event log
tpm: Use managed allocation for bios event log
tpm: tis_i2c: Convert to i2c's .probe_new()
tpm: tpm_i2c_nuvoton: Convert to i2c's .probe_new()
tpm: tpm_i2c_infineon: Convert to i2c's .probe_new()
tpm: tpm_i2c_atmel: Convert to i2c's .probe_new()
tpm: st33zp24: Convert to i2c's .probe_new()
KEYS: asymmetric: Fix ECDSA use via keyctl uapi
certs: don't try to update blacklist keys
KEYS: Add new function key_create()
certs: make blacklisted hash available in klog
tpm_crb: Add support for CRB devices based on Pluton
crypto: certs: fix FIPS selftest dependency
Dave Hansen