This reverts commit 6f98a4bfee.
It turns out we still can't do this. Way too many platforms that don't
have any real source of randomness at boot and no jitter entropy because
they don't even have a cycle counter.
As reported by Guenter Roeck:
"This causes a large number of qemu boot test failures for various
architectures (arm, m68k, microblaze, sparc32, xtensa are the ones I
observed).
Common denominator is that boot hangs at 'Saving random seed:'"
This isn't hugely unexpected - we tried it, it failed, so now we'll
revert it.
Link: https://lore.kernel.org/all/20220322155820.GA1745955@roeck-us.net/
Reported-and-bisected-by: Guenter Roeck <linux@roeck-us.net>
Cc: Jason Donenfeld <Jason@zx2c4.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 0313bc278d)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I7c5bfcacf71d51150ab2cb994c8fb938d643b148
It is no longer needed to be explicitly not set, due to some Kconfig
fixups in commit ab7d88549e ("hwrng: cavium - HW_RANDOM_CAVIUM should
depend on ARCH_THUNDER")
Fixes: ab7d88549e ("hwrng: cavium - HW_RANDOM_CAVIUM should depend on ARCH_THUNDER")
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I2653568d2c6bc8f86c69b4da87f20c7d2172447e
Steps on the way to 5.18-rc1
Resolves merge conflicts in:
kernel/cpu.c
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I67b08ef925226640647ccdc1d449e1b3fa8c6fdc
There are too many merge conflicts in 5.18-rc1 to keep carrying this
change for now. Revert it and if it is still needed, it can come back
later. Hopefully AFTER it has been properly submitted upstream...
Fixes: 027f8bd863 ("Revert "Revert "ANDROID: sched: avoid migrating when softint on tgt cpu should be short""")
Cc: John Dias <joaodias@google.com>
Cc: J. Avila <elavila@google.com>
Cc: Ashay Jaiswal <ashayj@codeaurora.org>
Cc: Shaleen Agrawal <shalagra@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I9d8eb204caa34d7676c3a9e0a63cad9af2579ce3
Steps on the way to 5.18-rc1
Resolves merge conflicts in:
kernel/fork.c
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ibd909664fe7d21a22cc1db5dd963d307e3e0b822
build.config.gki_kasan was not setting the correct configs to disable
LTO for KASAN builds, since the configs differ between when LTO support
was first created downstream vs what landed upstream.
These builds are large and take a long time to build with LTO added.
CONFIG_LTO and CONFIG_LTO_CLANG are not user selectable. Instead, set
LTO=none which build.sh will interpret then properly disable
CONFIG_LTO_CLANG_FULL, CONFIG_LTO_CLANG_THIN, and enable
CONFIG_LTO_NONE.
Bug: 225394140
Suggested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Change-Id: I79d1ea94b04d0a55afeb8df2874aeb7099bb030c
Enable PARAVIRT_TIME_ACCOUNTING in gki_defconfig to
support fine granularity task steal time accounting.
Bug: 223353878
Change-Id: I26d515ba0a94deacbaddad8432000c64c2cc9187
Signed-off-by: Naina Mehta <quic_nainmeht@quicinc.com>
(cherry picked from commit 1aeba0549a)
Pull io_uring statx fixes from Jens Axboe:
"On top of the main io_uring branch, this is to ensure that the
filename component of statx is stable after submit.
That requires a few VFS related changes"
* tag 'for-5.18/io_uring-statx-2022-03-18' of git://git.kernel.dk/linux-block:
io-uring: Make statx API stable
Pull io_uring updates from Jens Axboe:
- Fixes for current file position. Still doesn't have the f_pos_lock
sorted, but it's a step in the right direction (Dylan)
- Tracing updates (Dylan, Stefan)
- Improvements to io-wq locking (Hao)
- Improvements for provided buffers (me, Pavel)
- Support for registered file descriptors (me, Xiaoguang)
- Support for ring messages (me)
- Poll improvements (me)
- Fix for fixed buffers and non-iterator reads/writes (me)
- Support for NAPI on sockets (Olivier)
- Ring quiesce improvements (Usama)
- Misc fixes (Olivier, Pavel)
* tag 'for-5.18/io_uring-2022-03-18' of git://git.kernel.dk/linux-block: (42 commits)
io_uring: terminate manual loop iterator loop correctly for non-vecs
io_uring: don't check unrelated req->open.how in accept request
io_uring: manage provided buffers strictly ordered
io_uring: fold evfd signalling under a slower path
io_uring: thin down io_commit_cqring()
io_uring: shuffle io_eventfd_signal() bits around
io_uring: remove extra barrier for non-sqpoll iopoll
io_uring: fix provided buffer return on failure for kiocb_done()
io_uring: extend provided buf return to fails
io_uring: refactor timeout cancellation cqe posting
io_uring: normilise naming for fill_cqe*
io_uring: cache poll/double-poll state with a request flag
io_uring: cache req->apoll->events in req->cflags
io_uring: move req->poll_refs into previous struct hole
io_uring: make tracing format consistent
io_uring: recycle apoll_poll entries
io_uring: remove duplicated member check for io_msg_ring_prep()
io_uring: allow submissions to continue on error
io_uring: recycle provided buffers if request goes async
io_uring: ensure reads re-import for selected buffers
...
Pull random number generator updates from Jason Donenfeld:
"There have been a few important changes to the RNG's crypto, but the
intent for 5.18 has been to shore up the existing design as much as
possible with modern cryptographic functions and proven constructions,
rather than actually changing up anything fundamental to the RNG's
design.
So it's still the same old RNG at its core as before: it still counts
entropy bits, and collects from the various sources with the same
heuristics as before, and so forth. However, the cryptographic
algorithms that transform that entropic data into safe random numbers
have been modernized.
Just as important, if not more, is that the code has been cleaned up
and re-documented. As one of the first drivers in Linux, going back to
1.3.30, its general style and organization was showing its age and
becoming both a maintenance burden and an auditability impediment.
Hopefully this provides a more solid foundation to build on for the
future. I encourage you to open up the file in full, and maybe you'll
remark, "oh, that's what it's doing," and enjoy reading it. That, at
least, is the eventual goal, which this pull begins working toward.
Here's a summary of the various patches in this pull:
- /dev/urandom and /dev/random now do the same thing, per the patch
we discussed on the list. I think this is worth trying out. If it
does appear problematic, I've made sure to keep it standalone and
revertible without any conflicts.
- Fixes and cleanups for numerous integer type problems, locking
issues, and general code quality concerns.
- The input pool's LFSR has been replaced with a cryptographically
secure hash function, which has security and performance benefits
alike, and consequently allows us to count entropy bits linearly.
- The pre-init injection now uses a real hash function too, instead
of an LFSR or vanilla xor.
- The interrupt handler's fast_mix() function now uses one round of
SipHash, rather than the fake crypto that was there before.
- All additions of RDRAND and RDSEED now go through the input pool's
hash function, in part to mitigate ridiculous hypothetical CPU
backdoors, but more so to have a consistent interface for ingesting
entropy that's easy to analyze, making everything happen one way,
instead of a potpourri of different ways.
- The crng now works on per-cpu data, while also being in accordance
with the actual "fast key erasure RNG" design. This allows us to
fix several boot-time race complications associated with the prior
dynamically allocated model, eliminates much locking, and makes our
backtrack protection more robust.
- Batched entropy now erases doled out values so that it's backtrack
resistant.
- Working closely with Sebastian, the interrupt handler no longer
needs to take any locks at all, as we punt the
synchronized/expensive operations to a workqueue. This is
especially nice for PREEMPT_RT, where taking spinlocks in irq
context is problematic. It also makes the handler faster for the
rest of us.
- Also working with Sebastian, we now do the right thing on CPU
hotplug, so that we don't use stale entropy or fail to accumulate
new entropy when CPUs come back online.
- We handle virtual machines that fork / clone / snapshot, using the
"vmgenid" ACPI specification for retrieving a unique new RNG seed,
which we can use to also make WireGuard (and in the future, other
things) safe across VM forks.
- Around boot time, we now try to reseed more often if enough entropy
is available, before settling on the usual 5 minute schedule.
- Last, but certainly not least, the documentation in the file has
been updated considerably"
* tag 'random-5.18-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random: (60 commits)
random: check for signal and try earlier when generating entropy
random: reseed more often immediately after booting
random: make consistent usage of crng_ready()
random: use SipHash as interrupt entropy accumulator
wireguard: device: clear keys on VM fork
random: provide notifier for VM fork
random: replace custom notifier chain with standard one
random: do not export add_vmfork_randomness() unless needed
virt: vmgenid: notify RNG of VM fork and supply generation ID
ACPI: allow longer device IDs
random: add mechanism for VM forks to reinitialize crng
random: don't let 644 read-only sysctls be written to
random: give sysctl_random_min_urandom_seed a more sensible value
random: block in /dev/urandom
random: do crng pre-init loading in worker rather than irq
random: unify cycles_t and jiffies usage and types
random: cleanup UUID handling
random: only wake up writers after zap if threshold was passed
random: round-robin registers as ulong, not u32
random: clear fast pool, crng, and batches in cpuhp bring up
...
Pull PnP update from Rafael Wysocki:
"Replace acpi_bus_get_device() in the PNP code with
acpi_fetch_acpi_dev() which is better"
* tag 'pnp-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PNP: Replace acpi_bus_get_device()
Pull thermal control updates from Rafael Wysocki:
"As far as new functionality is concerned, there is a new thermal
driver for the Intel Hardware Feedback Interface (HFI) along with some
intel-speed-select utility changes to support it. There are also new
DT compatible strings for a couple of platforms, and thermal zones on
some platforms will be registered as HWmon sensors now.
Apart from the above, some drivers are updated (fixes mostly) and
there is a new piece of documentation for the Intel DPTF (Dynamic
Power and Thermal Framework) sysfs interface.
Specifics:
- Add a new thermal driver for the Intel Hardware Feedback Interface
(HFI) including the HFI initialization, HFI notification interrupt
handling and sending CPU capabilities change messages to user space
via the thermal netlink interface (Ricardo Neri, Srinivas
Pandruvada, Nathan Chancellor, Randy Dunlap).
- Extend the intel-speed-select utility to handle out-of-band CPU
configuration changes and add support for the CPU capabilities
change messages sent over the thermal netlink interface by the new
HFI thermal driver to it (Srinivas Pandruvada).
- Convert the DT bindings to yaml format for the Exynos platform and
fix and update the MAINTAINERS file for this driver (Krzysztof
Kozlowski).
- Register the thermal zones as HWmon sensors for the QCom's Tsens
driver and TI thermal platforms (Dmitry Baryshkov, Romain Naour).
- Add the msm8953 compatible documentation in the bindings (Luca
Weiss).
- Add the sm8150 platform support to the QCom LMh driver's DT binding
(Thara Gopinath).
- Check the command result from the IPC command to the BPMP in the
Tegra driver (Mikko Perttunen).
- Silence the error for normal configuration where the interrupt is
optionnal in the Broadcom thermal driver (Florian Fainelli).
- Remove remaining dead code from the TI thermal driver (Yue
Haibing).
- Don't use bitmap_weight() in end_power_clamp() in the powerclamp
driver (Yury Norov).
- Update the OS policy capabilities handshake in the int340x thermal
driver (Srinivas Pandruvada).
- Increase the policies bitmap size in int340x (Srinivas Pandruvada).
- Replace acpi_bus_get_device() with acpi_fetch_acpi_dev() in the
int340x thermal driver (Rafael Wysocki).
- Check for NULL after calling kmemdup() in int340x (Jiasheng Jiang).
- Add Intel Dynamic Power and Thermal Framework (DPTF) kernel
interface documentation (Srinivas Pandruvada).
- Fix bullet list warning in the thermal documentation (Randy
Dunlap)"
* tag 'thermal-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (30 commits)
thermal: int340x: Update OS policy capability handshake
thermal: int340x: Increase bitmap size
Documentation: thermal: DPTF Documentation
MAINTAINERS: thermal: samsung: update Krzysztof Kozlowski's email
thermal/drivers/ti-soc-thermal: Remove unused function ti_thermal_get_temp()
thermal/drivers/brcmstb_thermal: Interrupt is optional
thermal: tegra-bpmp: Handle errors in BPMP response
drivers/thermal/ti-soc-thermal: Add hwmon support
dt-bindings: thermal: tsens: Add msm8953 compatible
dt-bindings: thermal: Add sm8150 compatible string for LMh
thermal/drivers/qcom/lmh: Add support for sm8150
thermal/drivers/tsens: register thermal zones as hwmon sensors
MAINTAINERS: thermal: samsung: Drop obsolete properties
dt-bindings: thermal: samsung: Convert to dtschema
tools/power/x86/intel-speed-select: v1.12 release
tools/power/x86/intel-speed-select: HFI support
tools/power/x86/intel-speed-select: OOB daemon mode
thermal: intel: hfi: INTEL_HFI_THERMAL depends on NET
thermal: netlink: Fix parameter type of thermal_genl_cpu_capability_event() stub
thermal: Replace acpi_bus_get_device()
...
Pull power management updates from Rafael Wysocki:
"These are mostly fixes and cleanups all over the code and a new piece
of documentation for Intel uncore frequency scaling.
Functionality-wise, the intel_idle driver will support Sapphire Rapids
Xeons natively now (with some extra facilities for controlling
C-states more precisely on those systems), virtual guests will take
the ACPI S4 hardware signature into account by default, the
intel_pstate driver will take the defualt EPP value from the firmware,
cpupower utility will support the AMD P-state driver added in the
previous cycle, and there is a new tracer utility for that driver.
Specifics:
- Allow device_pm_check_callbacks() to be called from interrupt
context without issues (Dmitry Baryshkov).
- Modify devm_pm_runtime_enable() to automatically handle
pm_runtime_dont_use_autosuspend() at driver exit time (Douglas
Anderson).
- Make the schedutil cpufreq governor use to_gov_attr_set() instead
of open coding it (Kevin Hao).
- Replace acpi_bus_get_device() with acpi_fetch_acpi_dev() in the
cpufreq longhaul driver (Rafael Wysocki).
- Unify show() and store() naming in cpufreq and make it use
__ATTR_XX (Lianjie Zhang).
- Make the intel_pstate driver use the EPP value set by the firmware
by default (Srinivas Pandruvada).
- Re-order the init checks in the powernow-k8 cpufreq driver (Mario
Limonciello).
- Make the ACPI processor idle driver check for architectural support
for LPI to avoid using it on x86 by mistake (Mario Limonciello).
- Add Sapphire Rapids Xeon support to the intel_idle driver (Artem
Bityutskiy).
- Add 'preferred_cstates' module argument to the intel_idle driver to
work around C1 and C1E handling issue on Sapphire Rapids (Artem
Bityutskiy).
- Add core C6 optimization on Sapphire Rapids to the intel_idle
driver (Artem Bityutskiy).
- Optimize the haltpoll cpuidle driver a bit (Li RongQing).
- Remove leftover text from intel_idle() kerneldoc comment and fix up
white space in intel_idle (Rafael Wysocki).
- Fix load_image_and_restore() error path (Ye Bin).
- Fix typos in comments in the system wakeup hadling code (Tom Rix).
- Clean up non-kernel-doc comments in hibernation code (Jiapeng
Chong).
- Fix __setup handler error handling in system-wide suspend and
hibernation core code (Randy Dunlap).
- Add device name to suspend_report_result() (Youngjin Jang).
- Make virtual guests honour ACPI S4 hardware signature by default
(David Woodhouse).
- Block power off of a parent PM domain unless child is in deepest
state (Ulf Hansson).
- Use dev_err_probe() to simplify error handling for generic PM
domains (Ahmad Fatoum).
- Fix sleep-in-atomic bug caused by genpd_debug_remove() (Shawn Guo).
- Document Intel uncore frequency scaling (Srinivas Pandruvada).
- Add DTPM hierarchy description (Daniel Lezcano).
- Change the locking scheme in DTPM (Daniel Lezcano).
- Fix dtpm_cpu cleanup at exit time and missing virtual DTPM pointer
release (Daniel Lezcano).
- Make dtpm_node_callback[] static (kernel test robot).
- Fix spelling mistake "initialze" -> "initialize" in
dtpm_create_hierarchy() (Colin Ian King).
- Add tracer tool for the amd-pstate driver (Jinzhou Su).
- Fix PC6 displaying in turbostat on some systems (Artem Bityutskiy).
- Add AMD P-State support to the cpupower utility (Huang Rui)"
* tag 'pm-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (58 commits)
cpufreq: powernow-k8: Re-order the init checks
cpuidle: intel_idle: Drop redundant backslash at line end
cpuidle: intel_idle: Update intel_idle() kerneldoc comment
PM: hibernate: Honour ACPI hardware signature by default for virtual guests
cpufreq: intel_pstate: Use firmware default EPP
cpufreq: unify show() and store() naming and use __ATTR_XX
PM: core: keep irq flags in device_pm_check_callbacks()
cpuidle: haltpoll: Call cpuidle_poll_state_init() later
Documentation: amd-pstate: add tracer tool introduction
tools/power/x86/amd_pstate_tracer: Add tracer tool for AMD P-state
tools/power/x86/intel_pstate_tracer: make tracer as a module
cpufreq: amd-pstate: Add more tracepoint for AMD P-State module
PM: sleep: Add device name to suspend_report_result()
turbostat: fix PC6 displaying on some systems
intel_idle: add core C6 optimization for SPR
intel_idle: add 'preferred_cstates' module argument
intel_idle: add SPR support
PM: runtime: Have devm_pm_runtime_enable() handle pm_runtime_dont_use_autosuspend()
ACPI: processor idle: Check for architectural support for LPI
cpuidle: PSCI: Move the `has_lpi` check to the beginning of the function
...
Pull ACPI updates from Rafael Wysocki:
"From the new functionality perspective, the most significant items
here are the new driver for the 'ARM Generic Diagnostic Dump and
Reset' device, the extension of fine grain fan control in the ACPI fan
driver, and the change making it possible to use CPPC information to
obtain CPU capacity.
There are also a few new quirks, a bunch of fixes, including the
platform-level _OSC handling change to make it actually take the
platform firmware response into account, some code and documentation
cleanups, and a notable update of the ACPI device enumeration
documentation.
Specifics:
- Use uintptr_t and offsetof() in the ACPICA code to avoid compiler
warnings regarding NULL pointer arithmetic (Rafael Wysocki).
- Fix possible NULL pointer dereference in acpi_ns_walk_namespace()
when passed "acpi=off" in the command line (Rafael Wysocki).
- Fix and clean up acpi_os_read/write_port() (Rafael Wysocki).
- Introduce acpi_bus_for_each_dev() and use it for walking all ACPI
device objects in the Type C code (Rafael Wysocki).
- Fix the _OSC platform capabilities negotioation and prevent CPPC
from being used if the platform firmware indicates that it not
supported via _OSC (Rafael Wysocki).
- Use ida_alloc() instead of ida_simple_get() for ACPI enumeration of
devices (Rafael Wysocki).
- Add AGDI and CEDT to the list of known ACPI table signatures (Ilkka
Koskinen, Robert Kiraly).
- Add power management debug messages related to suspend-to-idle in
two places (Rafael Wysocki).
- Fix __acpi_node_get_property_reference() return value and clean up
that function (Andy Shevchenko, Sakari Ailus).
- Fix return value of the __setup handler in the ACPI PM timer clock
source driver (Randy Dunlap).
- Clean up double words in two comments (Tom Rix).
- Add "skip i2c clients" quirks for Lenovo Yoga Tablet 1050F/L and
Nextbook Ares 8 (Hans de Goede).
- Clean up frequency invariance handling on x86 in the ACPI CPPC
library (Huang Rui).
- Work around broken XSDT on the Advantech DAC-BJ01 board (Mark
Cilissen).
- Make wakeup events checks in the ACPI EC driver more
straightforward and clean up acpi_ec_submit_event() (Rafael
Wysocki).
- Make it possible to obtain the CPU capacity with the help of CPPC
information (Ionela Voinescu).
- Improve fine grained fan control in the ACPI fan driver and
document it (Srinivas Pandruvada).
- Add device HID and quirk for Microsoft Surface Go 3 to the ACPI
battery driver (Maximilian Luz).
- Make the ACPI driver for Intel SoCs (LPSS) let the SPI driver know
the exact type of the controller (Andy Shevchenko).
- Force native backlight mode on Clevo NL5xRU and NL5xNU (Werner
Sembach).
- Fix return value of __setup handlers in the APEI code (Randy
Dunlap).
- Add Arm Generic Diagnostic Dump and Reset device driver (Ilkka
Koskinen).
- Limit printable size of BERT table data (Darren Hart).
- Fix up HEST and GHES initialization (Shuai Xue).
- Update the ACPI device enumeration documentation and unify the ASL
style in GPIO-related examples (Andy Shevchenko)"
* tag 'acpi-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (52 commits)
clocksource: acpi_pm: fix return value of __setup handler
ACPI: bus: Avoid using CPPC if not supported by firmware
Revert "ACPI: Pass the same capabilities to the _OSC regardless of the query flag"
ACPI: video: Force backlight native for Clevo NL5xRU and NL5xNU
arm64, topology: enable use of init_cpu_capacity_cppc()
arch_topology: obtain cpu capacity using information from CPPC
x86, ACPI: rename init_freq_invariance_cppc() to arch_init_invariance_cppc()
ACPI: AGDI: Add driver for Arm Generic Diagnostic Dump and Reset device
ACPI: tables: Add AGDI to the list of known table signatures
ACPI/APEI: Limit printable size of BERT table data
ACPI: docs: gpio-properties: Unify ASL style for GPIO examples
ACPI / x86: Work around broken XSDT on Advantech DAC-BJ01 board
ACPI: APEI: fix return value of __setup handlers
x86/ACPI: CPPC: Move init_freq_invariance_cppc() into x86 CPPC
x86: Expose init_freq_invariance() to topology header
x86/ACPI: CPPC: Move AMD maximum frequency ratio setting function into x86 CPPC
x86/ACPI: CPPC: Rename cppc_msr.c to cppc.c
ACPI / x86: Add skip i2c clients quirk for Lenovo Yoga Tablet 1050F/L
ACPI / x86: Add skip i2c clients quirk for Nextbook Ares 8
ACPICA: Avoid walking the ACPI Namespace if it is not there
...
Pull documentation updates from Jonathan Corbet:
"It has been a moderately busy cycle for documentation; some of the
highlights are:
- Numerous PDF-generation improvements
- Kees's new document with guidelines for researchers studying the
development community.
- The ongoing stream of Chinese translations
- Thorsten's new document on regression handling
- A major reworking of the internal documentation for the kernel-doc
script.
Plus the usual stream of typo fixes and such"
* tag 'docs-5.18' of git://git.lwn.net/linux: (80 commits)
docs/kernel-parameters: update description of mem=
docs/zh_CN: Add sched-nice-design Chinese translation
docs: scheduler: Convert schedutil.txt to ReST
Docs: ktap: add code-block type
docs: serial: fix a reference file name in driver.rst
docs: UML: Mention telnetd for port channel
docs/zh_CN: add damon reclaim translation
docs/zh_CN: add damon usage translation
docs/zh_CN: add admin-guide damon start translation
docs/zh_CN: add admin-guide damon index translation
docs/zh_CN: Refactoring the admin-guide directory index
zh_CN: Add translation for admin-guide/mm/index.rst
zh_CN: Add translations for admin-guide/mm/ksm.rst
Add Chinese translation for vm/ksm.rst
docs/zh_CN: Add sched-stats Chinese translation
docs/zh_CN: add devicetree of_unittest translation
docs/zh_CN: add devicetree usage-model translation
docs/zh_CN: add devicetree index translation
Documentation: describe how to apply incremental stable patches
docs/zh_CN: add peci subsystem translation
...
Pull memory model doc update from Paul McKenney:
"An improved explanation of syntactic and semantic dependencies from
Alan Stern"
* tag 'lkmm.2022.03.13a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
tools/memory-model: Explain syntactic and semantic dependencies
Pull RCU updates from Paul McKenney:
- Fix idle detection (Neeraj Upadhyay) and missing access marking
detected by KCSAN.
- Reduce coupling between rcu_barrier() and CPU-hotplug operations, so
that rcu_barrier() no longer needs to do cpus_read_lock(). This may
also someday allow system boot to bring CPUs online concurrently.
- Enable more aggressive movement to per-CPU queueing when reacting to
excessive lock contention due to workloads placing heavy update-side
stress on RCU tasks.
- Improvements to RCU priority boosting, including changes from Neeraj
Upadhyay, Zqiang, and Alison Chaiken.
- Various fixes improving test robustness and debug information.
- Add tests for SRCU size transitions, further compress torture.sh
build products, and improve debug output.
- Miscellaneous fixes.
* tag 'rcu.2022.03.13a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (49 commits)
rcu: Replace cpumask_weight with cpumask_empty where appropriate
rcu: Remove __read_mostly annotations from rcu_scheduler_active externs
rcu: Uninline multi-use function: finish_rcuwait()
rcu: Mark writes to the rcu_segcblist structure's ->flags field
kasan: Record work creation stack trace with interrupts enabled
rcu: Inline __call_rcu() into call_rcu()
rcu: Add mutex for rcu boost kthread spawning and affinity setting
rcu: Fix description of kvfree_rcu()
MAINTAINERS: Add Frederic and Neeraj to their RCU files
rcutorture: Provide non-power-of-two Tasks RCU scenarios
rcutorture: Test SRCU size transitions
torture: Make torture.sh help message match reality
rcu-tasks: Set ->percpu_enqueue_shift to zero upon contention
rcu-tasks: Use order_base_2() instead of ilog2()
rcu: Create and use an rcu_rdp_cpu_online()
rcu: Make rcu_barrier() no longer block CPU-hotplug operations
rcu: Rework rcu_barrier() and callback-migration logic
rcu: Refactor rcu_barrier() empty-list handling
rcu: Kill rnp->ofl_seq and use only rcu_state.ofl_lock for exclusion
torture: Change KVM environment variable to RCUTORTURE
...
Pull parisc architecture updates from Helge Deller:
- add vDSO support (allows us to use non-executable stacks)
- many TLB and cache flush optimizations (by Dave Anglin)
- fix handling of probe non-access faults (by Dave Anglin)
- fix invalidate/flush vmap routines (by Dave Anglin)
- avoid using hardware single-step in kprobes
- enable ARCH_HAS_DEBUG_VM_PGTABLE
- many cleanups in unaligned handlers, e.g. rewrite of existing
assembly code
- always use the self-extracting kernel feature
- big refacturing and code reductions regarding space-register usage in
get_user() and put_user()
- add fillrect() support to stifb graphics driver
* tag 'for-5.18/parisc-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: (23 commits)
parisc: Fix invalidate/flush vmap routines
parisc: Avoid flushing cache on cache-less machines
parisc: Avoid using hardware single-step in kprobes
parisc: Improve CPU socket and core bootup info text
parisc: Enable ARCH_HAS_DEBUG_VM_PGTABLE
parisc: Avoid calling SMP cache flush functions on cache-less machines
parisc: Increase parisc_cache_flush_threshold setting
parisc/unaligned: Enhance user-space visible output
parisc/unaligned: Rewrite 32-bit inline assembly of emulate_sth()
parisc/unaligned: Rewrite 32-bit inline assembly of emulate_ldd()
parisc/unaligned: Rewrite inline assembly of emulate_ldw()
parisc/unaligned: Rewrite inline assembly of emulate_ldh()
parisc/unaligned: Use EFAULT fixup handler in unaligned handlers
parisc: Reduce code size by optimizing get_current() function calls
parisc: Use constants to encode the space registers like SR_KERNEL
parisc: Use SR_USER and SR_KERNEL in get_user() and put_user()
parisc: Add defines for various space register
parisc: Always use the self-extracting kernel feature
video/fbdev/stifb: Implement the stifb_fillrect() function
parisc: Add vDSO support
...
Pull interrupt updates from Thomas Gleixner:
"Core code:
- Provide generic_handle_irq_safe() which can be invoked from any
context (hard interrupt or threaded). This allows to remove ugly
workarounds in drivers all over the place.
- Use generic_handle_irq_safe() in the affected drivers.
- The usual cleanups and improvements.
Interrupt chip drivers:
- Support for new interrupt chips or not yet supported variants:
STM32MP14, Meson GPIO, Apple M1 PMU, Apple M1 AICv2, Qualcomm MPM
- Convert the Xilinx driver to generic interrupt domains
- Cleanup the irq_chip::name handling
- The usual cleanups and improvements all over the place"
* tag 'irq-core-2022-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits)
irqchip: Add Qualcomm MPM controller driver
dt-bindings: interrupt-controller: Add Qualcomm MPM support
irqchip/apple-aic: Add support for AICv2
irqchip/apple-aic: Support multiple dies
irqchip/apple-aic: Dynamically compute register offsets
irqchip/apple-aic: Switch to irq_domain_create_tree and sparse hwirqs
irqchip/apple-aic: Add Fast IPI support
dt-bindings: interrupt-controller: apple,aic2: New binding for AICv2
PCI: apple: Change MSI handling to handle 4-cell AIC fwspec form
irqchip/apple-aic: Fix cpumask allocation for FIQs
irqchip/meson-gpio: Add support for meson s4 SoCs
irqchip/meson-gpio: add select trigger type callback
irqchip/meson-gpio: support more than 8 channels gpio irq
dt-bindings: interrupt-controller: New binding for Meson-S4 SoCs
irqchip/xilinx: Switch to GENERIC_IRQ_MULTI_HANDLER
staging: greybus: gpio: Use generic_handle_irq_safe().
net: usb: lan78xx: Use generic_handle_irq_safe().
mfd: ezx-pcap: Use generic_handle_irq_safe().
misc: hi6421-spmi-pmic: Use generic_handle_irq_safe().
irqchip/sifive-plic: Disable S-mode IRQs if running in M-mode
...
Pull timer and timekeeping updates from Thomas Gleixner:
"Core code:
- Make the NOHZ handling of the timekeeping/tick core more robust to
prevent a rare jiffies update stall.
- Handle softirqs in the NOHZ/idle case correctly
Drivers:
- Add support for event stream scaling of the 1GHz counter on ARM(64)
- Correct an error code check in the timer-of layer
- The usual cleanups and improvements all over the place"
* tag 'timers-core-2022-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
lib/irq_poll: Declare IRQ_POLL softirq vector as ksoftirqd-parking safe
tick/rcu: Stop allowing RCU_SOFTIRQ in idle
tick/rcu: Remove obsolete rcu_needs_cpu() parameters
tick: Detect and fix jiffies update stall
clocksource/drivers/timer-of: Check return value of of_iomap in timer_of_base_init()
clocksource/drivers/timer-microchip-pit64b: Use 5MHz for clockevent
clocksource/drivers/timer-microchip-pit64b: Use notrace
clocksource/drivers/timer-microchip-pit64b: Remove mmio selection
dt-bindings: timer: Tegra: Convert text bindings to yaml
clocksource/drivers/imx-tpm: Move tpm_read_sched_clock() under CONFIG_ARM
clocksource/drivers/arm_arch_timer: Use event stream scaling when available
clocksource/drivers/exynos_mct: Increase the size of name array
clocksource/drivers/exynos_mct: Bump up mct max irq number
clocksource/drivers/exynos_mct: Remove mct interrupt index enum
clocksource/drivers/exynos_mct: Handle DTS with higher number of interrupts
clocksource/drivers/timer-ti-dm: Fix regression from errata i940 fix
clocksource/drivers/imx-tpm: Exclude sched clock for ARM64
clocksource: Add a Kconfig option for WATCHDOG_MAX_SKEW
clocksource/drivers/imx-tpm: Update name of clkevt
clocksource/drivers/imx-tpm: Add CLOCK_EVT_FEAT_DYNIRQ
...
Pull core process handling RT latency updates from Thomas Gleixner:
- Reduce the amount of work to release a task stack in context switch.
There is no real reason to do cgroup accounting and memory freeing in
this performance sensitive context.
Aside of this the invoked functions cannot be called from this
preemption disabled context on PREEMPT_RT enabled kernels. Solve this
by moving the accounting into do_exit() and delaying the freeing of
the stack unless the vmap stack can be cached.
- Provide a mechanism to delay raising signals from atomic context on
PREEMPT_RT enabled kernels as sighand::lock cannot be acquired. Store
the information in the task struct and raise it in the exit path.
* tag 'core-core-2022-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
signal, x86: Delay calling signals in atomic on RT enabled kernels
fork: Use IS_ENABLED() in account_kernel_stack()
fork: Only cache the VMAP stack in finish_task_switch()
fork: Move task stack accounting to do_exit()
fork: Move memcg_charge_kernel_stack() into CONFIG_VMAP_STACK
fork: Don't assign the stack pointer in dup_task_struct()
fork, IA64: Provide alloc_thread_stack_node() for IA64
fork: Duplicate task_struct before stack allocation
fork: Redo ifdefs around task stack handling
Pull x86 PASID support from Thomas Gleixner:
"Reenable ENQCMD/PASID support:
- Simplify the PASID handling to allocate the PASID once, associate
it to the mm of a process and free it on mm_exit().
The previous attempt of refcounted PASIDs and dynamic
alloc()/free() turned out to be error prone and too complex. The
PASID space is 20bits, so the case of resource exhaustion is a pure
academic concern.
- Populate the PASID MSR on demand via #GP to avoid racy updates via
IPIs.
- Reenable ENQCMD and let objtool check for the forbidden usage of
ENQCMD in the kernel.
- Update the documentation for Shared Virtual Addressing accordingly"
* tag 'x86-pasid-2022-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation/x86: Update documentation for SVA (Shared Virtual Addressing)
tools/objtool: Check for use of the ENQCMD instruction in the kernel
x86/cpufeatures: Re-enable ENQCMD
x86/traps: Demand-populate PASID MSR via #GP
sched: Define and initialize a flag to identify valid PASID in the task
x86/fpu: Clear PASID when copying fpstate
iommu/sva: Assign a PASID to mm on PASID allocation and free it on mm exit
kernel/fork: Initialize mm's PASID
iommu/ioasid: Introduce a helper to check for valid PASIDs
mm: Change CONFIG option for mm->pasid field
iommu/sva: Rename CONFIG_IOMMU_SVA_LIB to CONFIG_IOMMU_SVA
Pull x86 cleanups from Borislav Petkov:
- Remove a misleading message and an unused function
* tag 'x86_cleanups_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/nmi: Remove the 'strange power saving mode' hint from unknown NMI handler
x86/pat: Remove the unused set_pages_array_wt() function
Pull x86 confidential computing updates from Borislav Petkov:
- Add shared confidential computing code which will be used by both
vendors instead of proliferating home-grown solutions for
technologies (SEV/SNP and TDX) which are pretty similar
* tag 'x86_cc_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm/cpa: Generalize __set_memory_enc_pgtable()
x86/coco: Add API to handle encryption mask
x86/coco: Explicitly declare type of confidential computing platform
x86/cc: Move arch/x86/{kernel/cc_platform.c => coco/core.c}
Pull x86 SGX updates from Borislav Petkov:
- A couple of fixes and improvements to the SGX selftests
* tag 'x86_sgx_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
selftests/sgx: Treat CC as one argument
selftests/x86: Add validity check and allow field splitting
selftests/sgx: Remove extra newlines in test output
selftests/sgx: Ensure enclave data available during debug print
selftests/sgx: Do not attempt enclave build without valid enclave
selftests/sgx: Fix NULL-pointer-dereference upon early test failure
Pull x86 SEV fix from Borislav Petkov:
- Add a missing function section annotation
* tag 'x86_sev_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/head64: Add missing __head annotation to sme_postprocess_startup()
Pull x86 paravirt improvement from Borislav Petkov:
- Shorten CALL insns to pvops by a byte by using rip-relative
addressing
* tag 'x86_paravirt_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/paravirt: Use %rip-relative addressing in hook calls
Pull x86 Kconfig fix from Borislav Petkov:
- Correct Kconfig symbol visibility on x86
* tag 'x86_build_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/Kconfig: Select ARCH_SELECT_MEMORY_MODEL only if FLATMEM and SPARSEMEM are possible
Pull misc x86 updates from Borislav Petkov:
- Add support for a couple new insn sets to the insn decoder:
AVX512-FP16, AMX, other misc insns.
- Update VMware-specific MAINTAINERS entries
* tag 'x86_misc_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Mark VMware mailing list entries as email aliases
MAINTAINERS: Add Zack as maintainer of vmmouse driver
MAINTAINERS: Update maintainers for paravirt ops and VMware hypervisor interface
x86/insn: Add AVX512-FP16 instructions to the x86 instruction decoder
perf/tests: Add AVX512-FP16 instructions to x86 instruction decoder test
x86/insn: Add misc instructions to x86 instruction decoder
perf/tests: Add misc instructions to the x86 instruction decoder test
x86/insn: Add AMX instructions to the x86 instruction decoder
perf/tests: Add AMX instructions to x86 instruction decoder test
Pull x86 cpu feature updates from Borislav Petkov:
- Merge the AMD and Intel PPIN code into a shared one by both vendors.
Add the PPIN number to sysfs so that sockets can be identified when
replacement is needed
- Minor fixes and cleanups
* tag 'x86_cpu_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Clear SME feature flag when not in use
x86/cpufeatures: Put the AMX macros in the word 18 block
topology/sysfs: Add PPIN in sysfs under cpu topology
topology/sysfs: Add format parameter to macro defining "show" functions for proc
x86/cpu: Read/save PPIN MSR during initialization
x86/cpu: X86_FEATURE_INTEL_PPIN finally has a CPUID bit
x86/cpu: Merge Intel and AMD ppin_init() functions
x86/CPU/AMD: Use default_groups in kobj_type
Pull EDAC updates from Borislav Petkov:
- Add support for newer AMD family 0x19, models 0x10-... CPUs to
amd64_edac
- The usual amount of improvements and fixes
* tag 'edac_updates_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/altera: Add SDRAM ECC check for U-Boot
EDAC/amd64: Add new register offset support and related changes
EDAC/amd64: Set memory type per DIMM
EDAC/mc: Remove unnecessary cast to char * in edac_align_ptr()
EDAC: Use default_groups in kobj_type
EDAC: Use proper list of struct attribute for attributes
Pull ARM updates from Russell King:
- amba bus cleanups
- conversion to use reserve_initrd_mem()
- remove -nostdlib from vdso link
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9181/1: vdso: remove -nostdlib compiler flag
ARM: 9175/1: Convert to reserve_initrd_mem()
ARM: 9174/1: amba: Move EXPORT_SYMBOL() closer to definition
ARM: 9173/1: amba: kill amba_find_match()
ARM: 9172/1: amba: Cleanup amba pclk operation
Pull arm64 updates from Will Deacon:
- Support for including MTE tags in ELF coredumps
- Instruction encoder updates, including fixes to 64-bit immediate
generation and support for the LSE atomic instructions
- Improvements to kselftests for MTE and fpsimd
- Symbol aliasing and linker script cleanups
- Reduce instruction cache maintenance performed for user mappings
created using contiguous PTEs
- Support for the new "asymmetric" MTE mode, where stores are checked
asynchronously but loads are checked synchronously
- Support for the latest pointer authentication algorithm ("QARMA3")
- Support for the DDR PMU present in the Marvell CN10K platform
- Support for the CPU PMU present in the Apple M1 platform
- Use the RNDR instruction for arch_get_random_{int,long}()
- Update our copy of the Arm optimised string routines for str{n}cmp()
- Fix signal frame generation for CPUs which have foolishly elected to
avoid building in support for the fpsimd instructions
- Workaround for Marvell GICv3 erratum #38545
- Clarification to our Documentation (booting reqs. and MTE prctl())
- Miscellanous cleanups and minor fixes
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (90 commits)
docs: sysfs-devices-system-cpu: document "asymm" value for mte_tcf_preferred
arm64/mte: Remove asymmetric mode from the prctl() interface
arm64: Add cavium_erratum_23154_cpus missing sentinel
perf/marvell: Fix !CONFIG_OF build for CN10K DDR PMU driver
arm64: mm: Drop 'const' from conditional arm64_dma_phys_limit definition
Documentation: vmcoreinfo: Fix htmldocs warning
kasan: fix a missing header include of static_keys.h
drivers/perf: Add Apple icestorm/firestorm CPU PMU driver
drivers/perf: arm_pmu: Handle 47 bit counters
arm64: perf: Consistently make all event numbers as 16-bits
arm64: perf: Expose some Armv9 common events under sysfs
perf/marvell: cn10k DDR perf event core ownership
perf/marvell: cn10k DDR perfmon event overflow handling
perf/marvell: CN10k DDR performance monitor support
dt-bindings: perf: marvell: cn10k ddr performance monitor
arm64: clean up tools Makefile
perf/arm-cmn: Update watchpoint format
perf/arm-cmn: Hide XP PUB events for CMN-600
arm64: drop unused includes of <linux/personality.h>
arm64: Do not defer reserve_crashkernel() for platforms with no DMA memory zones
...
Pull tpm updates from Jarkko Sakkinen:
"In order to split the work a bit we've aligned with David Howells more
or less that I take more hardware/firmware aligned keyring patches,
and he takes care more of the framework aligned patches.
For TPM the patches worth of highlighting are the fixes for
refcounting provided by Lino Sanfilippo and James Bottomley.
Eric B. has done a bunch obvious (but important) fixes but there's one
a bit controversial: removal of asym_tpm. It was added in 2018 when
TPM1 was already declared as insecure and world had moved on to TPM2.
I don't know how this has passed all the filters but I did not have a
chance to see the patches when they were out. I simply cannot commit
to maintaining this because it was from all angles just wrong to take
it in the first place to the mainline kernel. Nobody should use this
module really for anything.
Finally, there is a new keyring '.machine' to hold MOK keys ('Machine
Owner Keys'). In the mok side MokListTrustedRT UEFI variable can be
set, from which kernel knows that MOK keys are kernel trusted keys and
they are populated to the machine keyring. This keyring linked to the
secondary trusted keyring, which means that can be used like any
kernel trusted keys. This keyring of course can be used to hold other
MOK'ish keys in other platforms in future"
* tag 'tpmdd-next-v5.18-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd: (24 commits)
tpm: use try_get_ops() in tpm-space.c
KEYS: asymmetric: properly validate hash_algo and encoding
KEYS: asymmetric: enforce that sig algo matches key algo
KEYS: remove support for asym_tpm keys
tpm: fix reference counting for struct tpm_chip
integrity: Only use machine keyring when uefi_check_trust_mok_keys is true
integrity: Trust MOK keys if MokListTrustedRT found
efi/mokvar: move up init order
KEYS: Introduce link restriction for machine keys
KEYS: store reference to machine keyring
integrity: add new keyring handler for mok keys
integrity: Introduce a Linux keyring called machine
integrity: Fix warning about missing prototypes
KEYS: trusted: Avoid calling null function trusted_key_exit
KEYS: trusted: Fix trusted key backends when building as module
tpm: xen-tpmfront: Use struct_size() helper
KEYS: x509: remove dead code that set ->unsupported_sig
KEYS: x509: remove never-set ->unsupported_key flag
KEYS: x509: remove unused fields
KEYS: x509: clearly distinguish between key and signature algorithms
...
Cache move-in for virtual accesses is controlled by the TLB. Thus,
we must generally purge TLB entries before flushing. The flush routines
must use TLB entries that inhibit cache move-in.
V2: Load physical address prior to flushing TLB. In flush_cache_page,
flush TLB when flushing and purging.
V3: Don't flush when start equals end.
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
