Commit Graph

43549 Commits

Author SHA1 Message Date
Linus Torvalds
f41dac3efb Performance events changes for v6.13:
- Uprobes:
     - Add BPF session support (Jiri Olsa)
     - Switch to RCU Tasks Trace flavor for better performance (Andrii Nakryiko)
     - Massively increase uretprobe SMP scalability by SRCU-protecting
       the uretprobe lifetime (Andrii Nakryiko)
     - Kill xol_area->slot_count (Oleg Nesterov)
 
  - Core facilities:
     - Implement targeted high-frequency profiling by adding the ability
       for an event to "pause" or "resume" AUX area tracing (Adrian Hunter)
 
  - VM profiling/sampling:
     - Correct perf sampling with guest VMs (Colton Lewis)
 
  - New hardware support:
     - x86/intel: Add PMU support for Intel ArrowLake-H CPUs (Dapeng Mi)
 
  - Misc fixes and enhancements:
     - x86/intel/pt: Fix buffer full but size is 0 case (Adrian Hunter)
     - x86/amd: Warn only on new bits set (Breno Leitao)
     - x86/amd/uncore: Avoid a false positive warning about snprintf
                       truncation in amd_uncore_umc_ctx_init (Jean Delvare)
     - uprobes: Re-order struct uprobe_task to save some space (Christophe JAILLET)
     - x86/rapl: Move the pmu allocation out of CPU hotplug (Kan Liang)
     - x86/rapl: Clean up cpumask and hotplug (Kan Liang)
     - uprobes: Deuglify xol_get_insn_slot/xol_free_insn_slot paths (Oleg Nesterov)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull performance events updates from Ingo Molnar:
 "Uprobes:
    - Add BPF session support (Jiri Olsa)
    - Switch to RCU Tasks Trace flavor for better performance (Andrii
      Nakryiko)
    - Massively increase uretprobe SMP scalability by SRCU-protecting
      the uretprobe lifetime (Andrii Nakryiko)
    - Kill xol_area->slot_count (Oleg Nesterov)

  Core facilities:
    - Implement targeted high-frequency profiling by adding the ability
      for an event to "pause" or "resume" AUX area tracing (Adrian
      Hunter)

  VM profiling/sampling:
    - Correct perf sampling with guest VMs (Colton Lewis)

  New hardware support:
    - x86/intel: Add PMU support for Intel ArrowLake-H CPUs (Dapeng Mi)

  Misc fixes and enhancements:
    - x86/intel/pt: Fix buffer full but size is 0 case (Adrian Hunter)
    - x86/amd: Warn only on new bits set (Breno Leitao)
    - x86/amd/uncore: Avoid a false positive warning about snprintf
      truncation in amd_uncore_umc_ctx_init (Jean Delvare)
    - uprobes: Re-order struct uprobe_task to save some space
      (Christophe JAILLET)
    - x86/rapl: Move the pmu allocation out of CPU hotplug (Kan Liang)
    - x86/rapl: Clean up cpumask and hotplug (Kan Liang)
    - uprobes: Deuglify xol_get_insn_slot/xol_free_insn_slot paths (Oleg
      Nesterov)"

* tag 'perf-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
  perf/core: Correct perf sampling with guest VMs
  perf/x86: Refactor misc flag assignments
  perf/powerpc: Use perf_arch_instruction_pointer()
  perf/core: Hoist perf_instruction_pointer() and perf_misc_flags()
  perf/arm: Drop unused functions
  uprobes: Re-order struct uprobe_task to save some space
  perf/x86/amd/uncore: Avoid a false positive warning about snprintf truncation in amd_uncore_umc_ctx_init
  perf/x86/intel: Do not enable large PEBS for events with aux actions or aux sampling
  perf/x86/intel/pt: Add support for pause / resume
  perf/core: Add aux_pause, aux_resume, aux_start_paused
  perf/x86/intel/pt: Fix buffer full but size is 0 case
  uprobes: SRCU-protect uretprobe lifetime (with timeout)
  uprobes: allow put_uprobe() from non-sleepable softirq context
  perf/x86/rapl: Clean up cpumask and hotplug
  perf/x86/rapl: Move the pmu allocation out of CPU hotplug
  uprobe: Add support for session consumer
  uprobe: Add data pointer to consumer handlers
  perf/x86/amd: Warn only on new bits set
  uprobes: fold xol_take_insn_slot() into xol_get_insn_slot()
  uprobes: kill xol_area->slot_count
  ...
2024-11-19 13:34:06 -08:00
Linus Torvalds
9d7d4ad222 Objtool changes for v6.13:
- Detect non-relocated text references for more robust
    IBT sealing (Josh Poimboeuf)
 
  - Fix build error when building stripped down
    UAPI headers (HONG Yifan)
 
  - Exclude __tracepoints data from ENDBR checks to fix
    false positives on clang builds (Peter Zijlstra)
 
  - Fix ORC unwind for newly forked tasks (Zheng Yejian)
 
  - Fix readelf related faddr2line regression (Carlos Llamas)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool updates from Ingo Molnar:

 - Detect non-relocated text references for more robust
   IBT sealing (Josh Poimboeuf)

 - Fix build error when building stripped down
   UAPI headers (HONG Yifan)

 - Exclude __tracepoints data from ENDBR checks to fix
   false positives on clang builds (Peter Zijlstra)

 - Fix ORC unwind for newly forked tasks (Zheng Yejian)

 - Fix readelf related faddr2line regression (Carlos Llamas)

* tag 'objtool-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Exclude __tracepoints data from ENDBR checks
  Revert "scripts/faddr2line: Check only two symbols when calculating symbol size"
  x86/unwind/orc: Fix unwind for newly forked tasks
  objtool: Also include tools/include/uapi
  objtool: Detect non-relocated text references
2024-11-19 13:27:52 -08:00
Linus Torvalds
d8d78a90e7 - Add a feature flag which denotes AMD CPUs supporting workload classification
with the purpose of using such hints when making scheduling decisions
 
 - Determine the boost enumerator for each AMD core based on its type: efficiency
   or performance, in the cppc driver
 
 - Add the type of a CPU to the topology CPU descriptor with the goal of
   supporting and making decisions based on the type of the respective core
 
 - Add a feature flag to denote AMD cores which have heterogeneous topology and
   enable SD_ASYM_PACKING for those
 
 - Check microcode revisions before disabling PCID on Intel
 
 - Cleanups and fixlets
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Merge tag 'x86_cpu_for_v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cpuid updates from Borislav Petkov:

 - Add a feature flag which denotes AMD CPUs supporting workload
   classification with the purpose of using such hints when making
   scheduling decisions

 - Determine the boost enumerator for each AMD core based on its type:
   efficiency or performance, in the cppc driver

 - Add the type of a CPU to the topology CPU descriptor with the goal of
   supporting and making decisions based on the type of the respective
   core

 - Add a feature flag to denote AMD cores which have heterogeneous
   topology and enable SD_ASYM_PACKING for those

 - Check microcode revisions before disabling PCID on Intel

 - Cleanups and fixlets

* tag 'x86_cpu_for_v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Remove redundant CONFIG_NUMA guard around numa_add_cpu()
  x86/cpu: Fix FAM5_QUARK_X1000 to use X86_MATCH_VFM()
  x86/cpu: Fix formatting of cpuid_bits[] in scattered.c
  x86/cpufeatures: Add X86_FEATURE_AMD_WORKLOAD_CLASS feature bit
  x86/amd: Use heterogeneous core topology for identifying boost numerator
  x86/cpu: Add CPU type to struct cpuinfo_topology
  x86/cpu: Enable SD_ASYM_PACKING for PKG domain on AMD
  x86/cpufeatures: Add X86_FEATURE_AMD_HETEROGENEOUS_CORES
  x86/cpufeatures: Rename X86_FEATURE_FAST_CPPC to have AMD prefix
  x86/mm: Don't disable PCID when INVLPG has been fixed by microcode
2024-11-19 12:27:19 -08:00
Linus Torvalds
8cdf2d1903 RCU pull request for v6.13
SRCU:
 
 	- Introduction of the new SRCU-lite flavour with a new pair of
 	  srcu_read_[un]lock_lite() APIs. In practice the read side using
 	  this flavour becomes lighter by removing a full memory barrier on
 	  LOCK and a full memory barrier on UNLOCK. This comes at the
 	  expense of a higher latency write side with two (in the best case
 	  of a snaphot of unused read-sides) or more RCU grace periods on
 	  the update side which now assumes by itself the whole full
 	  ordering guarantee against the LOCK/UNLOCK counters on both
 	  indexes, along with the accesses performed inside.
 
 	  Uretprobes is a known potential user.
 
 	  Note this doesn't replace the default normal flavour of SRCU which
 	  still behaves the same as usual.
 
 	- Add testing of SRCU-lite through rcutorture and rcuscale
 
 	- Various cleanups on the way.
 
 FIXES:
 
 	- Allow short-circuiting RCU-TASKS-RUDE grace periods on architectures
 	  that have sane noinstr boundaries forbidding tracing on low-level
 	  idle and kernel entry code. RCU-TASKS is enough on such configurations
 	  because it involves an RCU grace period that waits for all idle
 	  tasks to either schedule out voluntarily or enter into RCU
 	  unwatched noinstr code.
 
 	- Allow and test start_poll_synchronize_rcu() with IRQs disabled.
 
 	- Mention rcuog kthreads in relevant documentation and Kconfig help
 
 	- Various fixes and consolidations
 
 RCUTORTURE:
 
 	- Add --no-affinity on tools to leave the affinity setting of guests
 	  up to the user.
 
 	- Add guest_os_delay parameter to rcuscale for better warm-up
 	  control.
 
 	- Fix and improve some rcuscale error handling.
 
 	- Various cleanups and fixes
 
 STALL:
 
 	- Remove dead code
 
 	- Stop dumping tasks if a stalled grace period eventually ended
 	  midway as that only produces confusing output.
 
 	- Optimize detection of stalling CPUs and avoid useless node
 	  locking otherwise.
 
 NOCB:
 
 	- Fix rcu_barrier() hang due to a race against callbacks
 	  deoffloading. This is not yet used, except by rcutorture, and
 	  waits for its promised cpusets interface.
 
 	- Remove leftover function declaration
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Merge tag 'rcu.release.v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux

Pull RCU updates from Frederic Weisbecker:
 "SRCU:

   - Introduction of the new SRCU-lite flavour with a new pair of
     srcu_read_[un]lock_lite() APIs. In practice the read side using
     this flavour becomes lighter by removing a full memory barrier on
     LOCK and a full memory barrier on UNLOCK. This comes at the expense
     of a higher latency write side with two (in the best case of a
     snaphot of unused read-sides) or more RCU grace periods on the
     update side which now assumes by itself the whole full ordering
     guarantee against the LOCK/UNLOCK counters on both indexes, along
     with the accesses performed inside.

     Uretprobes is a known potential user.

     Note this doesn't replace the default normal flavour of SRCU which
     still behaves the same as usual.

   - Add testing of SRCU-lite through rcutorture and rcuscale

   - Various cleanups on the way.

  Fixes:

   - Allow short-circuiting RCU-TASKS-RUDE grace periods on
     architectures that have sane noinstr boundaries forbidding tracing
     on low-level idle and kernel entry code. RCU-TASKS is enough on
     such configurations because it involves an RCU grace period that
     waits for all idle tasks to either schedule out voluntarily or
     enter into RCU unwatched noinstr code.

   - Allow and test start_poll_synchronize_rcu() with IRQs disabled.

   - Mention rcuog kthreads in relevant documentation and Kconfig help

   - Various fixes and consolidations

  rcutorture:

   - Add --no-affinity on tools to leave the affinity setting of guests
     up to the user.

   - Add guest_os_delay parameter to rcuscale for better warm-up
     control.

   - Fix and improve some rcuscale error handling.

   - Various cleanups and fixes

  stall:

   - Remove dead code

   - Stop dumping tasks if a stalled grace period eventually ended
     midway as that only produces confusing output.

   - Optimize detection of stalling CPUs and avoid useless node locking
     otherwise.

  NOCB:

   - Fix rcu_barrier() hang due to a race against callbacks
     deoffloading. This is not yet used, except by rcutorture, and waits
     for its promised cpusets interface.

   - Remove leftover function declaration"

* tag 'rcu.release.v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (42 commits)
  rcuscale: Remove redundant WARN_ON_ONCE() splat
  rcuscale: Do a proper cleanup if kfree_scale_init() fails
  srcu: Unconditionally record srcu_read_lock_lite() in ->srcu_reader_flavor
  srcu: Check for srcu_read_lock_lite() across all CPUs
  srcu: Remove smp_mb() from srcu_read_unlock_lite()
  rcutorture: Avoid printing cpu=-1 for no-fault RCU boost failure
  rcuscale: Add guest_os_delay module parameter
  refscale: Correct affinity check
  torture: Add --no-affinity parameter to kvm.sh
  rcu/nocb: Fix missed RCU barrier on deoffloading
  rcu/kvfree: Fix data-race in __mod_timer / kvfree_call_rcu
  rcu/srcutiny: don't return before reenabling preemption
  rcu-tasks: Remove open-coded one-byte cmpxchg() emulation
  doc: Remove kernel-parameters.txt entry for rcutorture.read_exit
  rcutorture: Test start-poll primitives with interrupts disabled
  rcu: Permit start_poll_synchronize_rcu*() with interrupts disabled
  rcu: Allow short-circuiting of synchronize_rcu_tasks_rude()
  doc: Add rcuog kthreads to kernel-per-CPU-kthreads.rst
  rcu: Add rcuog kthreads to RCU_NOCB_CPU help text
  rcu: Use the BITS_PER_LONG macro
  ...
2024-11-19 11:27:07 -08:00
Linus Torvalds
cd7fa3e1b0 Thermal control updates for 6.13-rc1
- Add support for thermal thresholds that can be added and removed from
    user space via netlink along with a related library update (Daniel
    Lezcano).
 
  - Fix thermal zone initialization, suspend/resume and exit
    synchronization issues (Rafael Wysocki).
 
  - Rearrange locking in the thermal core to use guards (Rafael Wysocki).
 
  - Make the code handling thermal zone temperature updates use sorted
    lists of trip points to reduce the number of trip points table walks
    in the thermal core (Rafael Wysocki).
 
  - Fix and clean up the thermal testing facility code (Rafael Wysocki).
 
  - Fix a Power Allocator thermal governor issue (ZhengShaobo).
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Merge tag 'thermal-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control updates from Rafael Wysocki:
 "These are thermal core changes, including the addition of support for
  temperature thresholds that can be set from user space, fixes related
  to thermal zone initialization, suspend/resume and exit, locking
  rework and rearrangement of the code handling thermal zone temperature
  updates.

  Specifics:

   - Add support for thermal thresholds that can be added and removed
     from user space via netlink along with a related library update
     (Daniel Lezcano)

   - Fix thermal zone initialization, suspend/resume and exit
     synchronization issues (Rafael Wysocki)

   - Rearrange locking in the thermal core to use guards (Rafael
     Wysocki)

   - Make the code handling thermal zone temperature updates use sorted
     lists of trip points to reduce the number of trip points table
     walks in the thermal core (Rafael Wysocki)

   - Fix and clean up the thermal testing facility code (Rafael Wysocki)

   - Fix a Power Allocator thermal governor issue (ZhengShaobo)"

* tag 'thermal-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (45 commits)
  thermal: testing: Initialize some variables annoteded with _free()
  thermal: testing: Use DEFINE_FREE() and __free() to simplify code
  thermal: testing: Simplify tt_get_tt_zone()
  thermal: gov_power_allocator: Granted power set to max when nobody request power
  thermal: core: Relocate thermal zone initialization routine
  thermal: core: Use trip lists for trip crossing detection
  thermal: core: Eliminate thermal_zone_trip_down()
  thermal: core: Relocate functions that update trip points
  thermal: core: Move some trip processing to thermal_trip_crossed()
  thermal: core: Pass trip descriptor to thermal_trip_crossed()
  thermal: core: Rearrange __thermal_zone_device_update()
  thermal: core: Prepare for moving trips between sorted lists
  thermal: core: Rename trip list node in struct thermal_trip_desc
  thermal: core: Build sorted lists instead of sorting them later
  thermal/lib: Fix memory leak on error in thermal_genl_auto()
  thermal: thresholds: Fix thermal lock annotation issue
  tools/thermal/thermal-engine: Take into account the thresholds API
  tools/lib/thermal: Add the threshold netlink ABI
  tools/lib/thermal: Make more generic the command encoding function
  thermal: netlink: Add the commands and the events for the thresholds
  ...
2024-11-19 11:15:40 -08:00
Linus Torvalds
ad52c55e1d Power management updates for 6.13-rc1
- Update the amd-pstate driver to set the initial scaling frequency
    policy lower bound to be the lowest non-linear frequency (Dhananjay
    Ugwekar).
 
  - Enable amd-pstate by default on servers starting with newer AMD Epyc
    processors (Swapnil Sapkal).
 
  - Align more codepaths between shared memory and MSR designs in
    amd-pstate (Dhananjay Ugwekar).
 
  - Clean up amd-pstate code to rename functions and remove redundant
    calls (Dhananjay Ugwekar, Mario Limonciello).
 
  - Do other assorted fixes and cleanups in amd-pstate (Dhananjay Ugwekar
    and Mario Limonciello).
 
  - Change the Balance-performance EPP value for Granite Rapids in the
    intel_pstate driver to a more performance-biased one (Srinivas
    Pandruvada).
 
  - Simplify MSR read on the boot CPU in the ACPI cpufreq driver (Chang
    S. Bae).
 
  - Ensure sugov_eas_rebuild_sd() is always called when sugov_init()
    succeeds to always enforce sched domains rebuild in case EAS needs
    to be enabled (Christian Loehle).
 
  - Switch cpufreq back to platform_driver::remove() (Uwe Kleine-König).
 
  - Use proper frequency unit names in cpufreq (Marcin Juszkiewicz).
 
  - Add a built-in idle states table for Granite Rapids Xeon D to the
    intel_idle driver (Artem Bityutskiy).
 
  - Fix some typos in comments in the cpuidle core and drivers (Shen
    Lichuan).
 
  - Remove iowait influence from the menu cpuidle governor (Christian
    Loehle).
 
  - Add min/max available performance state limits to the Energy Model
    management code (Lukasz Luba).
 
  - Update pm-graph to v5.13 (Todd Brandt).
 
  - Add documentation for some recently introduced cpupower utility
    options (Tor Vic).
 
  - Make cpupower inform users where cpufreq-bench.conf should be located
    when opening it fails (Peng Fan).
 
  - Allow overriding cross-compiling env params in cpupower (Peng Fan).
 
  - Add compile_commands.json to .gitignore in cpupower (John B. Wyatt
    IV).
 
  - Improve disable c_state block in cpupower bindings and add a test to
    confirm that CPU state is disabled to it (John B. Wyatt IV).
 
  - Add Chinese Simplified translation to cpupower (Kieran Moy).
 
  - Add checks for xgettext and msgfmt to cpupower (Siddharth Menon).
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Merge tag 'pm-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "The amd-pstate cpufreq driver gets the majority of changes this time.
  They are mostly fixes and cleanups, but one of them causes it to
  become the default cpufreq driver on some AMD server platforms.

  Apart from that, the menu cpuidle governor is modified to not use
  iowait any more, the intel_idle gets a custom C-states table for
  Granite Rapids Xeon D, and the intel_pstate driver will use a more
  aggressive Balance- performance default EPP value on Granite Rapids
  now.

  There are also some fixes, cleanups and tooling updates.

  Specifics:

   - Update the amd-pstate driver to set the initial scaling frequency
     policy lower bound to be the lowest non-linear frequency (Dhananjay
     Ugwekar)

   - Enable amd-pstate by default on servers starting with newer AMD
     Epyc processors (Swapnil Sapkal)

   - Align more codepaths between shared memory and MSR designs in
     amd-pstate (Dhananjay Ugwekar)

   - Clean up amd-pstate code to rename functions and remove redundant
     calls (Dhananjay Ugwekar, Mario Limonciello)

   - Do other assorted fixes and cleanups in amd-pstate (Dhananjay
     Ugwekar and Mario Limonciello)

   - Change the Balance-performance EPP value for Granite Rapids in the
     intel_pstate driver to a more performance-biased one (Srinivas
     Pandruvada)

   - Simplify MSR read on the boot CPU in the ACPI cpufreq driver (Chang
     S. Bae)

   - Ensure sugov_eas_rebuild_sd() is always called when sugov_init()
     succeeds to always enforce sched domains rebuild in case EAS needs
     to be enabled (Christian Loehle)

   - Switch cpufreq back to platform_driver::remove() (Uwe Kleine-König)

   - Use proper frequency unit names in cpufreq (Marcin Juszkiewicz)

   - Add a built-in idle states table for Granite Rapids Xeon D to the
     intel_idle driver (Artem Bityutskiy)

   - Fix some typos in comments in the cpuidle core and drivers (Shen
     Lichuan)

   - Remove iowait influence from the menu cpuidle governor (Christian
     Loehle)

   - Add min/max available performance state limits to the Energy Model
     management code (Lukasz Luba)

   - Update pm-graph to v5.13 (Todd Brandt)

   - Add documentation for some recently introduced cpupower utility
     options (Tor Vic)

   - Make cpupower inform users where cpufreq-bench.conf should be
     located when opening it fails (Peng Fan)

   - Allow overriding cross-compiling env params in cpupower (Peng Fan)

   - Add compile_commands.json to .gitignore in cpupower (John B. Wyatt
     IV)

   - Improve disable c_state block in cpupower bindings and add a test
     to confirm that CPU state is disabled to it (John B. Wyatt IV)

   - Add Chinese Simplified translation to cpupower (Kieran Moy)

   - Add checks for xgettext and msgfmt to cpupower (Siddharth Menon)"

* tag 'pm-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (38 commits)
  cpufreq: intel_pstate: Update Balance-performance EPP for Granite Rapids
  cpufreq: ACPI: Simplify MSR read on the boot CPU
  sched/cpufreq: Ensure sd is rebuilt for EAS check
  intel_idle: add Granite Rapids Xeon D support
  PM: EM: Add min/max available performance state limits
  cpufreq/amd-pstate: Move registration after static function call update
  cpufreq/amd-pstate: Push adjust_perf vfunc init into cpu_init
  cpufreq/amd-pstate: Align offline flow of shared memory and MSR based systems
  cpufreq/amd-pstate: Call cppc_set_epp_perf in the reenable function
  cpufreq/amd-pstate: Do not attempt to clear MSR_AMD_CPPC_ENABLE
  cpufreq/amd-pstate: Rename functions that enable CPPC
  cpufreq/amd-pstate-ut: Add fix for min freq unit test
  amd-pstate: Switch to amd-pstate by default on some Server platforms
  amd-pstate: Set min_perf to nominal_perf for active mode performance gov
  cpufreq/amd-pstate: Remove the redundant amd_pstate_set_driver() call
  cpufreq/amd-pstate: Remove the switch case in amd_pstate_init()
  cpufreq/amd-pstate: Call amd_pstate_set_driver() in amd_pstate_register_driver()
  cpufreq/amd-pstate: Call amd_pstate_register() in amd_pstate_init()
  cpufreq/amd-pstate: Set the initial min_freq to lowest_nonlinear_freq
  cpufreq/amd-pstate: Remove the redundant verify() function
  ...
2024-11-19 11:05:00 -08:00
Linus Torvalds
26c9fdd6f3 nolibc changes for 6.13
Changes
 -------
 
 * Fix potential error due to missing #include on s390
 * Compatibility with -Wmissing-fallthrough
 * Run qemu with more memory during tests
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Merge tag 'nolibc.2024.11.01a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull nolibc updates from Paul McKenney:

 - Fix potential error due to missing #include on s390

 - Compatibility with -Wmissing-fallthrough

 - Run qemu with more memory during tests

* tag 'nolibc.2024.11.01a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  selftests/nolibc: start qemu with 1 GiB of memory
  tools/nolibc: compiler: add macro __nolibc_fallthrough
  tools/nolibc: s390: include std.h
2024-11-19 10:13:53 -08:00
Linus Torvalds
ba1f9c8fe3 arm64 updates for 6.13:
* Support for running Linux in a protected VM under the Arm Confidential
   Compute Architecture (CCA)
 
 * Guarded Control Stack user-space support. Current patches follow the
   x86 ABI of implicitly creating a shadow stack on clone(). Subsequent
   patches (already on the list) will add support for clone3() allowing
   finer-grained control of the shadow stack size and placement from libc
 
 * AT_HWCAP3 support (not running out of HWCAP2 bits yet but we are
   getting close with the upcoming dpISA support)
 
 * Other arch features:
 
   - In-kernel use of the memcpy instructions, FEAT_MOPS (previously only
     exposed to user; uaccess support not merged yet)
 
   - MTE: hugetlbfs support and the corresponding kselftests
 
   - Optimise CRC32 using the PMULL instructions
 
   - Support for FEAT_HAFT enabling ARCH_HAS_NONLEAF_PMD_YOUNG
 
   - Optimise the kernel TLB flushing to use the range operations
 
   - POE/pkey (permission overlays): further cleanups after bringing the
     signal handler in line with the x86 behaviour for 6.12
 
 * arm64 perf updates:
 
   - Support for the NXP i.MX91 PMU in the existing IMX driver
 
   - Support for Ampere SoCs in the Designware PCIe PMU driver
 
   - Support for Marvell's 'PEM' PCIe PMU present in the 'Odyssey' SoC
 
   - Support for Samsung's 'Mongoose' CPU PMU
 
   - Support for PMUv3.9 finer-grained userspace counter access control
 
   - Switch back to platform_driver::remove() now that it returns 'void'
 
   - Add some missing events for the CXL PMU driver
 
 * Miscellaneous arm64 fixes/cleanups:
 
   - Page table accessors cleanup: type updates, drop unused macros,
     reorganise arch_make_huge_pte() and clean up pte_mkcont(), sanity
     check addresses before runtime P4D/PUD folding
 
   - Command line override for ID_AA64MMFR0_EL1.ECV (advertising the
     FEAT_ECV for the generic timers) allowing Linux to boot with
     firmware deployments that don't set SCTLR_EL3.ECVEn
 
   - ACPI/arm64: tighten the check for the array of platform timer
     structures and adjust the error handling procedure in
     gtdt_parse_timer_block()
 
   - Optimise the cache flush for the uprobes xol slot (skip if no
     change) and other uprobes/kprobes cleanups
 
   - Fix the context switching of tpidrro_el0 when kpti is enabled
 
   - Dynamic shadow call stack fixes
 
   - Sysreg updates
 
   - Various arm64 kselftest improvements
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Catalin Marinas:

 - Support for running Linux in a protected VM under the Arm
   Confidential Compute Architecture (CCA)

 - Guarded Control Stack user-space support. Current patches follow the
   x86 ABI of implicitly creating a shadow stack on clone(). Subsequent
   patches (already on the list) will add support for clone3() allowing
   finer-grained control of the shadow stack size and placement from
   libc

 - AT_HWCAP3 support (not running out of HWCAP2 bits yet but we are
   getting close with the upcoming dpISA support)

 - Other arch features:

     - In-kernel use of the memcpy instructions, FEAT_MOPS (previously
       only exposed to user; uaccess support not merged yet)

     - MTE: hugetlbfs support and the corresponding kselftests

     - Optimise CRC32 using the PMULL instructions

     - Support for FEAT_HAFT enabling ARCH_HAS_NONLEAF_PMD_YOUNG

     - Optimise the kernel TLB flushing to use the range operations

     - POE/pkey (permission overlays): further cleanups after bringing
       the signal handler in line with the x86 behaviour for 6.12

 - arm64 perf updates:

     - Support for the NXP i.MX91 PMU in the existing IMX driver

     - Support for Ampere SoCs in the Designware PCIe PMU driver

     - Support for Marvell's 'PEM' PCIe PMU present in the 'Odyssey' SoC

     - Support for Samsung's 'Mongoose' CPU PMU

     - Support for PMUv3.9 finer-grained userspace counter access
       control

     - Switch back to platform_driver::remove() now that it returns
       'void'

     - Add some missing events for the CXL PMU driver

 - Miscellaneous arm64 fixes/cleanups:

     - Page table accessors cleanup: type updates, drop unused macros,
       reorganise arch_make_huge_pte() and clean up pte_mkcont(), sanity
       check addresses before runtime P4D/PUD folding

     - Command line override for ID_AA64MMFR0_EL1.ECV (advertising the
       FEAT_ECV for the generic timers) allowing Linux to boot with
       firmware deployments that don't set SCTLR_EL3.ECVEn

     - ACPI/arm64: tighten the check for the array of platform timer
       structures and adjust the error handling procedure in
       gtdt_parse_timer_block()

     - Optimise the cache flush for the uprobes xol slot (skip if no
       change) and other uprobes/kprobes cleanups

     - Fix the context switching of tpidrro_el0 when kpti is enabled

     - Dynamic shadow call stack fixes

     - Sysreg updates

     - Various arm64 kselftest improvements

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (168 commits)
  arm64: tls: Fix context-switching of tpidrro_el0 when kpti is enabled
  kselftest/arm64: Try harder to generate different keys during PAC tests
  kselftest/arm64: Don't leak pipe fds in pac.exec_sign_all()
  arm64/ptrace: Clarify documentation of VL configuration via ptrace
  kselftest/arm64: Corrupt P0 in the irritator when testing SSVE
  acpi/arm64: remove unnecessary cast
  arm64/mm: Change protval as 'pteval_t' in map_range()
  kselftest/arm64: Fix missing printf() argument in gcs/gcs-stress.c
  kselftest/arm64: Add FPMR coverage to fp-ptrace
  kselftest/arm64: Expand the set of ZA writes fp-ptrace does
  kselftets/arm64: Use flag bits for features in fp-ptrace assembler code
  kselftest/arm64: Enable build of PAC tests with LLVM=1
  kselftest/arm64: Check that SVCR is 0 in signal handlers
  selftests/mm: Fix unused function warning for aarch64_write_signal_pkey()
  kselftest/arm64: Fix printf() compiler warnings in the arm64 syscall-abi.c tests
  kselftest/arm64: Fix printf() warning in the arm64 MTE prctl() test
  kselftest/arm64: Fix printf() compiler warnings in the arm64 fp tests
  kselftest/arm64: Fix build with stricter assemblers
  arm64/scs: Drop unused prototype __pi_scs_patch_vmlinux()
  arm64/scs: Deal with 64-bit relative offsets in FDE frames
  ...
2024-11-18 18:10:37 -08:00
Linus Torvalds
909d3b571e vfs-6.13.pidfs
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Merge tag 'vfs-6.13.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull pidfs update from Christian Brauner:
 "This adds a new ioctl to retrieve information about a pidfd.

  A common pattern when using pidfds is having to get information about
  the process, which currently requires /proc being mounted, resolving
  the fd to a pid, and then do manual string parsing of /proc/N/status
  and friends. This needs to be reimplemented over and over in all
  userspace projects (e.g.: it has been reimplemented in systemd, dbus,
  dbus-daemon, polkit so far), and requires additional care in checking
  that the fd is still valid after having parsed the data, to avoid
  races.

  Having a programmatic API that can be used directly removes all these
  requirements, including having /proc mounted.

  As discussed at LPC24, add an ioctl with an extensible struct so that
  more parameters can be added later if needed. Start with returning
  pid/tgid/ppid and some creds unconditionally, and cgroupid optionally"

* tag 'vfs-6.13.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  pidfd: add ioctl to retrieve pid info
2024-11-18 10:47:46 -08:00
Linus Torvalds
a29835c9d0 vfs-6.13.ovl
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Merge tag 'vfs-6.13.ovl' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull overlayfs updates from Christian Brauner:
 "Make overlayfs support specifying layers through file descriptors.

  Currently overlayfs only allows specifying layers through path names.
  This is inconvenient for users that want to assemble an overlayfs
  mount purely based on file descriptors:

  This enables user to specify both:

    fsconfig(fd_overlay, FSCONFIG_SET_FD, "upperdir+", NULL, fd_upper);
    fsconfig(fd_overlay, FSCONFIG_SET_FD, "workdir+",  NULL, fd_work);
    fsconfig(fd_overlay, FSCONFIG_SET_FD, "lowerdir+", NULL, fd_lower1);
    fsconfig(fd_overlay, FSCONFIG_SET_FD, "lowerdir+", NULL, fd_lower2);

  in addition to:

    fsconfig(fd_overlay, FSCONFIG_SET_STRING, "upperdir+", "/upper",  0);
    fsconfig(fd_overlay, FSCONFIG_SET_STRING, "workdir+",  "/work",   0);
    fsconfig(fd_overlay, FSCONFIG_SET_STRING, "lowerdir+", "/lower1", 0);
    fsconfig(fd_overlay, FSCONFIG_SET_STRING, "lowerdir+", "/lower2", 0);

  There's also a large set of new overlayfs selftests to test new
  features and some older properties"

* tag 'vfs-6.13.ovl' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  selftests: add test for specifying 500 lower layers
  selftests: add overlayfs fd mounting selftests
  selftests: use shared header
  Documentation,ovl: document new file descriptor based layers
  ovl: specify layers via file descriptors
  fs: add helper to use mount option as path or fd
2024-11-18 10:45:06 -08:00
Linus Torvalds
4c797b11a8 vfs-6.13.file
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Merge tag 'vfs-6.13.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs file updates from Christian Brauner:
 "This contains changes the changes for files for this cycle:

   - Introduce a new reference counting mechanism for files.

     As atomic_inc_not_zero() is implemented with a try_cmpxchg() loop
     it has O(N^2) behaviour under contention with N concurrent
     operations and it is in a hot path in __fget_files_rcu().

     The rcuref infrastructures remedies this problem by using an
     unconditional increment relying on safe- and dead zones to make
     this work and requiring rcu protection for the data structure in
     question. This not just scales better it also introduces overflow
     protection.

     However, in contrast to generic rcuref, files require a memory
     barrier and thus cannot rely on *_relaxed() atomic operations and
     also require to be built on atomic_long_t as having massive amounts
     of reference isn't unheard of even if it is just an attack.

     This adds a file specific variant instead of making this a generic
     library.

     This has been tested by various people and it gives consistent
     improvement up to 3-5% on workloads with loads of threads.

   - Add a fastpath for find_next_zero_bit(). Skip 2-levels searching
     via find_next_zero_bit() when there is a free slot in the word that
     contains the next fd. This improves pts/blogbench-1.1.0 read by 8%
     and write by 4% on Intel ICX 160.

   - Conditionally clear full_fds_bits since it's very likely that a bit
     in full_fds_bits has been cleared during __clear_open_fds(). This
     improves pts/blogbench-1.1.0 read up to 13%, and write up to 5% on
     Intel ICX 160.

   - Get rid of all lookup_*_fdget_rcu() variants. They were used to
     lookup files without taking a reference count. That became invalid
     once files were switched to SLAB_TYPESAFE_BY_RCU and now we're
     always taking a reference count. Switch to an already existing
     helper and remove the legacy variants.

   - Remove pointless includes of <linux/fdtable.h>.

   - Avoid cmpxchg() in close_files() as nobody else has a reference to
     the files_struct at that point.

   - Move close_range() into fs/file.c and fold __close_range() into it.

   - Cleanup calling conventions of alloc_fdtable() and expand_files().

   - Merge __{set,clear}_close_on_exec() into one.

   - Make __set_open_fd() set cloexec as well instead of doing it in two
     separate steps"

* tag 'vfs-6.13.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  selftests: add file SLAB_TYPESAFE_BY_RCU recycling stressor
  fs: port files to file_ref
  fs: add file_ref
  expand_files(): simplify calling conventions
  make __set_open_fd() set cloexec state as well
  fs: protect backing files with rcu
  file.c: merge __{set,clear}_close_on_exec()
  alloc_fdtable(): change calling conventions.
  fs/file.c: add fast path in find_next_fd()
  fs/file.c: conditionally clear full_fds
  fs/file.c: remove sanity_check and add likely/unlikely in alloc_fd()
  move close_range(2) into fs/file.c, fold __close_range() into it
  close_files(): don't bother with xchg()
  remove pointless includes of <linux/fdtable.h>
  get rid of ...lookup...fdget_rcu() family
2024-11-18 10:30:29 -08:00
Linus Torvalds
4a5df37964 10 hotfixes, 7 of which are cc:stable. All singletons, please see the
changelogs for details.
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Merge tag 'mm-hotfixes-stable-2024-11-16-15-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull hotfixes from Andrew Morton:
 "10 hotfixes, 7 of which are cc:stable. All singletons, please see the
  changelogs for details"

* tag 'mm-hotfixes-stable-2024-11-16-15-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm: revert "mm: shmem: fix data-race in shmem_getattr()"
  ocfs2: uncache inode which has failed entering the group
  mm: fix NULL pointer dereference in alloc_pages_bulk_noprof
  mm, doc: update read_ahead_kb for MADV_HUGEPAGE
  fs/proc/task_mmu: prevent integer overflow in pagemap_scan_get_args()
  sched/task_stack: fix object_is_on_stack() for KASAN tagged pointers
  crash, powerpc: default to CRASH_DUMP=n on PPC_BOOK3S_32
  mm/mremap: fix address wraparound in move_page_tables()
  tools/mm: fix compile error
  mm, swap: fix allocation and scanning race with swapoff
2024-11-16 16:00:38 -08:00
Frederic Weisbecker
d8dfba2c60 Merge branches 'rcu/fixes', 'rcu/nocb', 'rcu/torture', 'rcu/stall' and 'rcu/srcu' into rcu/dev 2024-11-15 22:38:53 +01:00
Rafael J. Wysocki
c6e2a4c9ee Merge branch 'pm-tools'
Merge power management utilities updates for 6.13-rc1:

 - Update pm-graph to v5.13 (Todd Brandt).

 - Add documentation for some recently introduced cpupower utility
   options (Tor Vic).

 - Make cpupower inform users where cpufreq-bench.conf should be located
   when opening it fails (Peng Fan).

 - Allow overriding cross-compiling env params in cpupower (Peng Fan).

 - Add compile_commands.json to .gitignore in cpupower (John B. Wyatt
   IV).

 - Improve disable c_state block in cpupower bindings and add a test to
   confirm that CPU state is disabled to it (John B. Wyatt IV).

 - Add Chinese Simplified translation to cpupower (Kieran Moy).

 - Add checks for xgettext and msgfmt to cpupower (Siddharth Menon).

* pm-tools:
  cpupower: add checks for xgettext and msgfmt
  cpupower: Add Chinese Simplified translation
  pm-graph v5.13
  pm: cpupower: bindings: Add test to confirm cpu state is disabled
  pm: cpupower: bindings: Improve disable c_state block
  pm: cpupower: gitignore: Add compile_commands.json
  pm: cpupower: Makefile: Allow overriding cross-compiling env params
  pm: cpupower: bench: print config file path when open cpufreq-bench.conf fails
  tools/power/cpupower: Add documentation for some recently introduced options
2024-11-15 19:57:57 +01:00
Motiejus JakÅ`tys
a39326767c tools/mm: fix compile error
Add a missing semicolon.

Link: https://lkml.kernel.org/r/20241112171655.1662670-1-motiejus@jakstys.lt
Fixes: ece5897e5a ("tools/mm: -Werror fixes in page-types/slabinfo")
Signed-off-by: Motiejus JakÅ`tys <motiejus@jakstys.lt>
Closes: https://github.com/NixOS/nixpkgs/issues/355369
Reviewed-by: SeongJae Park <sj@kernel.org>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Acked-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: Wladislav Wiebe <wladislav.kw@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-11-14 22:43:48 -08:00
Linus Torvalds
cfaaa7d010 Including fixes from bluetooth.
Quite calm week. No new regression under investigation.
 
 Current release - regressions:
 
   - eth: revert "igb: Disable threaded IRQ for igb_msix_other"
 
 Current release - new code bugs:
 
   - bluetooth: btintel: direct exception event to bluetooth stack
 
 Previous releases - regressions:
 
   - core: fix data-races around sk->sk_forward_alloc
 
   - netlink: terminate outstanding dump on socket close
 
   - mptcp: error out earlier on disconnect
 
   - vsock: fix accept_queue memory leak
 
   - phylink: ensure PHY momentary link-fails are handled
 
   - eth: mlx5:
     - fix null-ptr-deref in add rule err flow
     - lock FTE when checking if active
 
   - eth: dwmac-mediatek: fix inverted handling of mediatek,mac-wol
 
 Previous releases - always broken:
 
   - sched: fix u32's systematic failure to free IDR entries for hnodes.
 
   - sctp: fix possible UAF in sctp_v6_available()
 
   - eth: bonding: add ns target multicast address to slave device
 
   - eth: mlx5: fix msix vectors to respect platform limit
 
   - eth: icssg-prueth: fix 1 PPS sync
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from bluetooth.

  Quite calm week. No new regression under investigation.

  Current release - regressions:

   - eth: revert "igb: Disable threaded IRQ for igb_msix_other"

  Current release - new code bugs:

   - bluetooth: btintel: direct exception event to bluetooth stack

  Previous releases - regressions:

   - core: fix data-races around sk->sk_forward_alloc

   - netlink: terminate outstanding dump on socket close

   - mptcp: error out earlier on disconnect

   - vsock: fix accept_queue memory leak

   - phylink: ensure PHY momentary link-fails are handled

   - eth: mlx5:
      - fix null-ptr-deref in add rule err flow
      - lock FTE when checking if active

   - eth: dwmac-mediatek: fix inverted handling of mediatek,mac-wol

  Previous releases - always broken:

   - sched: fix u32's systematic failure to free IDR entries for hnodes.

   - sctp: fix possible UAF in sctp_v6_available()

   - eth: bonding: add ns target multicast address to slave device

   - eth: mlx5: fix msix vectors to respect platform limit

   - eth: icssg-prueth: fix 1 PPS sync"

* tag 'net-6.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (38 commits)
  net: sched: u32: Add test case for systematic hnode IDR leaks
  selftests: bonding: add ns multicast group testing
  bonding: add ns target multicast address to slave device
  net: ti: icssg-prueth: Fix 1 PPS sync
  stmmac: dwmac-intel-plat: fix call balance of tx_clk handling routines
  net: Make copy_safe_from_sockptr() match documentation
  net: stmmac: dwmac-mediatek: Fix inverted handling of mediatek,mac-wol
  ipmr: Fix access to mfc_cache_list without lock held
  samples: pktgen: correct dev to DEV
  net: phylink: ensure PHY momentary link-fails are handled
  mptcp: pm: use _rcu variant under rcu_read_lock
  mptcp: hold pm lock when deleting entry
  mptcp: update local address flags when setting it
  net: sched: cls_u32: Fix u32's systematic failure to free IDR entries for hnodes.
  MAINTAINERS: Re-add cancelled Renesas driver sections
  Revert "igb: Disable threaded IRQ for igb_msix_other"
  Bluetooth: btintel: Direct exception event to bluetooth stack
  Bluetooth: hci_core: Fix calling mgmt_device_connected
  virtio/vsock: Improve MSG_ZEROCOPY error handling
  vsock: Fix sk_error_queue memory leak
  ...
2024-11-14 10:05:33 -08:00
Catalin Marinas
83ef4a378e Merge branch 'for-next/pkey-signal' into for-next/core
* for-next/pkey-signal:
  : Bring arm64 pkey signal delivery in line with the x86 behaviour
  selftests/mm: Fix unused function warning for aarch64_write_signal_pkey()
  selftests/mm: Define PKEY_UNRESTRICTED for pkey_sighandler_tests
  selftests/mm: Enable pkey_sighandler_tests on arm64
  selftests/mm: Use generic pkey register manipulation
  arm64: signal: Remove unused macro
  arm64: signal: Remove unnecessary check when saving POE state
  arm64: signal: Improve POR_EL0 handling to avoid uaccess failures
  firmware: arm_sdei: Fix the input parameter of cpuhp_remove_state()
  Revert "kasan: Disable Software Tag-Based KASAN with GCC"
  kasan: Fix Software Tag-Based KASAN with GCC
  kasan: Disable Software Tag-Based KASAN with GCC
  Documentation/protection-keys: add AArch64 to documentation
  arm64: set POR_EL0 for kernel threads

# Conflicts:
#	arch/arm64/kernel/signal.c
2024-11-14 12:07:30 +00:00
Catalin Marinas
5a4332062e Merge branches 'for-next/gcs', 'for-next/probes', 'for-next/asm-offsets', 'for-next/tlb', 'for-next/misc', 'for-next/mte', 'for-next/sysreg', 'for-next/stacktrace', 'for-next/hwcap3', 'for-next/kselftest', 'for-next/crc32', 'for-next/guest-cca', 'for-next/haft' and 'for-next/scs', remote-tracking branch 'arm64/for-next/perf' into for-next/core
* arm64/for-next/perf:
  perf: Switch back to struct platform_driver::remove()
  perf: arm_pmuv3: Add support for Samsung Mongoose PMU
  dt-bindings: arm: pmu: Add Samsung Mongoose core compatible
  perf/dwc_pcie: Fix typos in event names
  perf/dwc_pcie: Add support for Ampere SoCs
  ARM: pmuv3: Add missing write_pmuacr()
  perf/marvell: Marvell PEM performance monitor support
  perf/arm_pmuv3: Add PMUv3.9 per counter EL0 access control
  perf/dwc_pcie: Convert the events with mixed case to lowercase
  perf/cxlpmu: Support missing events in 3.1 spec
  perf: imx_perf: add support for i.MX91 platform
  dt-bindings: perf: fsl-imx-ddr: Add i.MX91 compatible
  drivers perf: remove unused field pmu_node

* for-next/gcs: (42 commits)
  : arm64 Guarded Control Stack user-space support
  kselftest/arm64: Fix missing printf() argument in gcs/gcs-stress.c
  arm64/gcs: Fix outdated ptrace documentation
  kselftest/arm64: Ensure stable names for GCS stress test results
  kselftest/arm64: Validate that GCS push and write permissions work
  kselftest/arm64: Enable GCS for the FP stress tests
  kselftest/arm64: Add a GCS stress test
  kselftest/arm64: Add GCS signal tests
  kselftest/arm64: Add test coverage for GCS mode locking
  kselftest/arm64: Add a GCS test program built with the system libc
  kselftest/arm64: Add very basic GCS test program
  kselftest/arm64: Always run signals tests with GCS enabled
  kselftest/arm64: Allow signals tests to specify an expected si_code
  kselftest/arm64: Add framework support for GCS to signal handling tests
  kselftest/arm64: Add GCS as a detected feature in the signal tests
  kselftest/arm64: Verify the GCS hwcap
  arm64: Add Kconfig for Guarded Control Stack (GCS)
  arm64/ptrace: Expose GCS via ptrace and core files
  arm64/signal: Expose GCS state in signal frames
  arm64/signal: Set up and restore the GCS context for signal handlers
  arm64/mm: Implement map_shadow_stack()
  ...

* for-next/probes:
  : Various arm64 uprobes/kprobes cleanups
  arm64: insn: Simulate nop instruction for better uprobe performance
  arm64: probes: Remove probe_opcode_t
  arm64: probes: Cleanup kprobes endianness conversions
  arm64: probes: Move kprobes-specific fields
  arm64: probes: Fix uprobes for big-endian kernels
  arm64: probes: Fix simulate_ldr*_literal()
  arm64: probes: Remove broken LDR (literal) uprobe support

* for-next/asm-offsets:
  : arm64 asm-offsets.c cleanup (remove unused offsets)
  arm64: asm-offsets: remove PREEMPT_DISABLE_OFFSET
  arm64: asm-offsets: remove DMA_{TO,FROM}_DEVICE
  arm64: asm-offsets: remove VM_EXEC and PAGE_SZ
  arm64: asm-offsets: remove MM_CONTEXT_ID
  arm64: asm-offsets: remove COMPAT_{RT_,SIGFRAME_REGS_OFFSET
  arm64: asm-offsets: remove VMA_VM_*
  arm64: asm-offsets: remove TSK_ACTIVE_MM

* for-next/tlb:
  : TLB flushing optimisations
  arm64: optimize flush tlb kernel range
  arm64: tlbflush: add __flush_tlb_range_limit_excess()

* for-next/misc:
  : Miscellaneous patches
  arm64: tls: Fix context-switching of tpidrro_el0 when kpti is enabled
  arm64/ptrace: Clarify documentation of VL configuration via ptrace
  acpi/arm64: remove unnecessary cast
  arm64/mm: Change protval as 'pteval_t' in map_range()
  arm64: uprobes: Optimize cache flushes for xol slot
  acpi/arm64: Adjust error handling procedure in gtdt_parse_timer_block()
  arm64: fix .data.rel.ro size assertion when CONFIG_LTO_CLANG
  arm64/ptdump: Test both PTE_TABLE_BIT and PTE_VALID for block mappings
  arm64/mm: Sanity check PTE address before runtime P4D/PUD folding
  arm64/mm: Drop setting PTE_TYPE_PAGE in pte_mkcont()
  ACPI: GTDT: Tighten the check for the array of platform timer structures
  arm64/fpsimd: Fix a typo
  arm64: Expose ID_AA64ISAR1_EL1.XS to sanitised feature consumers
  arm64: Return early when break handler is found on linked-list
  arm64/mm: Re-organize arch_make_huge_pte()
  arm64/mm: Drop _PROT_SECT_DEFAULT
  arm64: Add command-line override for ID_AA64MMFR0_EL1.ECV
  arm64: head: Drop SWAPPER_TABLE_SHIFT
  arm64: cpufeature: add POE to cpucap_is_possible()
  arm64/mm: Change pgattr_change_is_safe() arguments as pteval_t

* for-next/mte:
  : Various MTE improvements
  selftests: arm64: add hugetlb mte tests
  hugetlb: arm64: add mte support

* for-next/sysreg:
  : arm64 sysreg updates
  arm64/sysreg: Update ID_AA64MMFR1_EL1 to DDI0601 2024-09

* for-next/stacktrace:
  : arm64 stacktrace improvements
  arm64: preserve pt_regs::stackframe during exec*()
  arm64: stacktrace: unwind exception boundaries
  arm64: stacktrace: split unwind_consume_stack()
  arm64: stacktrace: report recovered PCs
  arm64: stacktrace: report source of unwind data
  arm64: stacktrace: move dump_backtrace() to kunwind_stack_walk()
  arm64: use a common struct frame_record
  arm64: pt_regs: swap 'unused' and 'pmr' fields
  arm64: pt_regs: rename "pmr_save" -> "pmr"
  arm64: pt_regs: remove stale big-endian layout
  arm64: pt_regs: assert pt_regs is a multiple of 16 bytes

* for-next/hwcap3:
  : Add AT_HWCAP3 support for arm64 (also wire up AT_HWCAP4)
  arm64: Support AT_HWCAP3
  binfmt_elf: Wire up AT_HWCAP3 at AT_HWCAP4

* for-next/kselftest: (30 commits)
  : arm64 kselftest fixes/cleanups
  kselftest/arm64: Try harder to generate different keys during PAC tests
  kselftest/arm64: Don't leak pipe fds in pac.exec_sign_all()
  kselftest/arm64: Corrupt P0 in the irritator when testing SSVE
  kselftest/arm64: Add FPMR coverage to fp-ptrace
  kselftest/arm64: Expand the set of ZA writes fp-ptrace does
  kselftets/arm64: Use flag bits for features in fp-ptrace assembler code
  kselftest/arm64: Enable build of PAC tests with LLVM=1
  kselftest/arm64: Check that SVCR is 0 in signal handlers
  kselftest/arm64: Fix printf() compiler warnings in the arm64 syscall-abi.c tests
  kselftest/arm64: Fix printf() warning in the arm64 MTE prctl() test
  kselftest/arm64: Fix printf() compiler warnings in the arm64 fp tests
  kselftest/arm64: Fix build with stricter assemblers
  kselftest/arm64: Test signal handler state modification in fp-stress
  kselftest/arm64: Provide a SIGUSR1 handler in the kernel mode FP stress test
  kselftest/arm64: Implement irritators for ZA and ZT
  kselftest/arm64: Remove unused ADRs from irritator handlers
  kselftest/arm64: Correct misleading comments on fp-stress irritators
  kselftest/arm64: Poll less often while waiting for fp-stress children
  kselftest/arm64: Increase frequency of signal delivery in fp-stress
  kselftest/arm64: Fix encoding for SVE B16B16 test
  ...

* for-next/crc32:
  : Optimise CRC32 using PMULL instructions
  arm64/crc32: Implement 4-way interleave using PMULL
  arm64/crc32: Reorganize bit/byte ordering macros
  arm64/lib: Handle CRC-32 alternative in C code

* for-next/guest-cca:
  : Support for running Linux as a guest in Arm CCA
  arm64: Document Arm Confidential Compute
  virt: arm-cca-guest: TSM_REPORT support for realms
  arm64: Enable memory encrypt for Realms
  arm64: mm: Avoid TLBI when marking pages as valid
  arm64: Enforce bounce buffers for realm DMA
  efi: arm64: Map Device with Prot Shared
  arm64: rsi: Map unprotected MMIO as decrypted
  arm64: rsi: Add support for checking whether an MMIO is protected
  arm64: realm: Query IPA size from the RMM
  arm64: Detect if in a realm and set RIPAS RAM
  arm64: rsi: Add RSI definitions

* for-next/haft:
  : Support for arm64 FEAT_HAFT
  arm64: pgtable: Warn unexpected pmdp_test_and_clear_young()
  arm64: Enable ARCH_HAS_NONLEAF_PMD_YOUNG
  arm64: Add support for FEAT_HAFT
  arm64: setup: name 'tcr2' register
  arm64/sysreg: Update ID_AA64MMFR1_EL1 register

* for-next/scs:
  : Dynamic shadow call stack fixes
  arm64/scs: Drop unused prototype __pi_scs_patch_vmlinux()
  arm64/scs: Deal with 64-bit relative offsets in FDE frames
  arm64/scs: Fix handling of DWARF augmentation data in CIE/FDE frames
2024-11-14 12:07:16 +00:00
Alexandre Ferrieux
ca34aceb32 net: sched: u32: Add test case for systematic hnode IDR leaks
Add a tdc test case to exercise the just-fixed systematic leak of
IDR entries in u32 hnode disposal. Given the IDR in question is
confined to the range [1..0x7FF], it is sufficient to create/delete
the same filter 2048 times to fill it up and get a nonzero exit
status from "tc filter add".

Signed-off-by: Alexandre Ferrieux <alexandre.ferrieux@orange.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20241113100428.360460-1-alexandre.ferrieux@orange.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-11-14 11:39:17 +01:00
Hangbin Liu
86fb6173d1 selftests: bonding: add ns multicast group testing
Add a test to make sure the backup slaves join correct multicast group
when arp_validate enabled and ns_ip6_target is set. Here is the result:

TEST: arp_validate (active-backup ns_ip6_target arp_validate 0)     [ OK ]
TEST: arp_validate (join mcast group)                               [ OK ]
TEST: arp_validate (active-backup ns_ip6_target arp_validate 1)     [ OK ]
TEST: arp_validate (join mcast group)                               [ OK ]
TEST: arp_validate (active-backup ns_ip6_target arp_validate 2)     [ OK ]
TEST: arp_validate (join mcast group)                               [ OK ]
TEST: arp_validate (active-backup ns_ip6_target arp_validate 3)     [ OK ]
TEST: arp_validate (join mcast group)                               [ OK ]
TEST: arp_validate (active-backup ns_ip6_target arp_validate 4)     [ OK ]
TEST: arp_validate (join mcast group)                               [ OK ]
TEST: arp_validate (active-backup ns_ip6_target arp_validate 5)     [ OK ]
TEST: arp_validate (join mcast group)                               [ OK ]
TEST: arp_validate (active-backup ns_ip6_target arp_validate 6)     [ OK ]
TEST: arp_validate (join mcast group)                               [ OK ]

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-11-14 11:16:28 +01:00
Linus Torvalds
9f8e716d46 BPF fixes:
- Fix a mismatching RCU unlock flavor in bpf_out_neigh_v6
   (Jiawei Ye)
 
 - Fix BPF sockmap with kTLS to reject vsock and unix sockets
   upon kTLS context retrieval (Zijian Zhang)
 
 - Fix BPF bits iterator selftest for s390x (Hou Tao)
 
 Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Pull bpf fixes from Daniel Borkmann:

 - Fix a mismatching RCU unlock flavor in bpf_out_neigh_v6 (Jiawei Ye)

 - Fix BPF sockmap with kTLS to reject vsock and unix sockets upon kTLS
   context retrieval (Zijian Zhang)

 - Fix BPF bits iterator selftest for s390x (Hou Tao)

* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf: Fix mismatched RCU unlock flavour in bpf_out_neigh_v6
  bpf: Add sk_is_inet and IS_ICSK check in tls_sw_has_ctx_tx/rx
  selftests/bpf: Use -4095 as the bad address for bits iterator
2024-11-13 09:14:19 -08:00
Linus Torvalds
4b49c0ba4e 10 hotfixes, 7 of which are cc:stable. 7 are MM, 3 are not. All
singletons.
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Merge tag 'mm-hotfixes-stable-2024-11-12-16-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "10 hotfixes, 7 of which are cc:stable. 7 are MM, 3 are not. All
  singletons"

* tag 'mm-hotfixes-stable-2024-11-12-16-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm: swapfile: fix cluster reclaim work crash on rotational devices
  selftests: hugetlb_dio: fixup check for initial conditions to skip in the start
  mm/thp: fix deferred split queue not partially_mapped: fix
  mm/gup: avoid an unnecessary allocation call for FOLL_LONGTERM cases
  nommu: pass NULL argument to vma_iter_prealloc()
  ocfs2: fix UBSAN warning in ocfs2_verify_volume()
  nilfs2: fix null-ptr-deref in block_dirty_buffer tracepoint
  nilfs2: fix null-ptr-deref in block_touch_buffer tracepoint
  mm: page_alloc: move mlocked flag clearance into free_pages_prepare()
  mm: count zeromap read and set for swapout and swapin
2024-11-13 08:58:11 -08:00
Paul E. McKenney
32693634cd torture: Add --no-affinity parameter to kvm.sh
In performance tests, it can be counter-productive to spread torture-test
guest OSes across sockets.  Plus the experimenter might have ideas about
what CPUs individual guest OSes are to run on.  This commit therefore
adds a --no-affinity parameter to kvm.sh to prevent it from running
taskset on its guest OSes.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
2024-11-12 23:04:24 +01:00
Linus Torvalds
14b6320953 KVM x86 and selftests fixes for 6.12:
x86:
 
 - When emulating a guest TLB flush for a nested guest, flush vpid01, not
   vpid02, if L2 is active but VPID is disabled in vmcs12, i.e. if L2 and
   L1 are sharing VPID '0' (from L1's perspective).
 
 - Fix a bug in the SNP initialization flow where KVM would return '0' to
   userspace instead of -errno on failure.
 
 - Move the Intel PT virtualization (i.e. outputting host trace to host
   buffer and guest trace to guest buffer) behind CONFIG_BROKEN.
 
 - Fix memory leak on failure of KVM_SEV_SNP_LAUNCH_START
 
 - Fix a bug where KVM fails to inject an interrupt from the IRR after
   KVM_SET_LAPIC.
 
 Selftests:
 
 - Increase the timeout for the memslot performance selftest to avoid false
   failures on arm64 and nested x86 platforms.
 
 - Fix a goof in the guest_memfd selftest where a for-loop initialized a
   bit mask to zero instead of BIT(0).
 
 - Disable strict aliasing when building KVM selftests to prevent the
   compiler from treating things like "u64 *" to "uint64_t *" cases as
   undefined behavior, which can lead to nasty, hard to debug failures.
 
 - Force -march=x86-64-v2 for KVM x86 selftests if and only if the uarch
   is supported by the compiler.
 
 - Fix broken compilation of kvm selftests after a header sync in tools/
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "x86 and selftests fixes.

  x86:

   - When emulating a guest TLB flush for a nested guest, flush vpid01,
     not vpid02, if L2 is active but VPID is disabled in vmcs12, i.e. if
     L2 and L1 are sharing VPID '0' (from L1's perspective).

   - Fix a bug in the SNP initialization flow where KVM would return '0'
     to userspace instead of -errno on failure.

   - Move the Intel PT virtualization (i.e. outputting host trace to
     host buffer and guest trace to guest buffer) behind CONFIG_BROKEN.

   - Fix memory leak on failure of KVM_SEV_SNP_LAUNCH_START

   - Fix a bug where KVM fails to inject an interrupt from the IRR after
     KVM_SET_LAPIC.

  Selftests:

   - Increase the timeout for the memslot performance selftest to avoid
     false failures on arm64 and nested x86 platforms.

   - Fix a goof in the guest_memfd selftest where a for-loop initialized
     a bit mask to zero instead of BIT(0).

   - Disable strict aliasing when building KVM selftests to prevent the
     compiler from treating things like "u64 *" to "uint64_t *" cases as
     undefined behavior, which can lead to nasty, hard to debug
     failures.

   - Force -march=x86-64-v2 for KVM x86 selftests if and only if the
     uarch is supported by the compiler.

   - Fix broken compilation of kvm selftests after a header sync in
     tools/"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN
  KVM: x86: Unconditionally set irr_pending when updating APICv state
  kvm: svm: Fix gctx page leak on invalid inputs
  KVM: selftests: use X86_MEMTYPE_WB instead of VMX_BASIC_MEM_TYPE_WB
  KVM: SVM: Propagate error from snp_guest_req_init() to userspace
  KVM: nVMX: Treat vpid01 as current if L2 is active, but with VPID disabled
  KVM: selftests: Don't force -march=x86-64-v2 if it's unsupported
  KVM: selftests: Disable strict aliasing
  KVM: selftests: fix unintentional noop test in guest_memfd_test.c
  KVM: selftests: memslot_perf_test: increase guest sync timeout
2024-11-12 13:35:13 -08:00
Donet Tom
fae1980347 selftests: hugetlb_dio: fixup check for initial conditions to skip in the start
This test verifies that a hugepage, used as a user buffer for DIO
operations, is correctly freed upon unmapping.  To test this, we read the
count of free hugepages before and after the mmap, DIO, and munmap
operations, then check if the free hugepage count is the same.

Reading free hugepages before the test was removed by commit 0268d45799
('selftests: hugetlb_dio: check for initial conditions to skip at the
start'), causing the test to always fail.

This patch adds back reading the free hugepages before starting the test. 
With this patch, the tests are now passing.

Test results without this patch:

./tools/testing/selftests/mm/hugetlb_dio
TAP version 13
1..4
 # No. Free pages before allocation : 0
 # No. Free pages after munmap : 100
not ok 1 : Huge pages not freed!
 # No. Free pages before allocation : 0
 # No. Free pages after munmap : 100
not ok 2 : Huge pages not freed!
 # No. Free pages before allocation : 0
 # No. Free pages after munmap : 100
not ok 3 : Huge pages not freed!
 # No. Free pages before allocation : 0
 # No. Free pages after munmap : 100
not ok 4 : Huge pages not freed!
 # Totals: pass:0 fail:4 xfail:0 xpass:0 skip:0 error:0

Test results with this patch:

/tools/testing/selftests/mm/hugetlb_dio
TAP version 13
1..4
# No. Free pages before allocation : 100
# No. Free pages after munmap : 100
ok 1 : Huge pages freed successfully !
# No. Free pages before allocation : 100
# No. Free pages after munmap : 100
ok 2 : Huge pages freed successfully !
# No. Free pages before allocation : 100
# No. Free pages after munmap : 100
ok 3 : Huge pages freed successfully !
# No. Free pages before allocation : 100
# No. Free pages after munmap : 100
ok 4 : Huge pages freed successfully !

# Totals: pass:4 fail:0 xfail:0 xpass:0 skip:0 error:0

Link: https://lkml.kernel.org/r/20241110064903.23626-1-donettom@linux.ibm.com
Fixes: 0268d45799 ("selftests: hugetlb_dio: check for initial conditions to skip in the start")
Signed-off-by: Donet Tom <donettom@linux.ibm.com>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-11-12 10:14:00 -08:00
Mark Brown
91a6533811 kselftest/arm64: Try harder to generate different keys during PAC tests
We very intermittently see failures in the single_thread_different_keys
PAC test. As noted in the comment in the test the PAC field can be quite
narrow so there is a chance of collisions even with different keys with a
chance of 5% for 7 bit keys, and the potential for narrower keys. The test
tries to avoid this by running repeatedly, but only tries 10 times which
even with a 5% chance of collisions isn't enough.

Increase the number of times we attempt to look for collisions by a factor
of 100, this also affects other tests which are following a similar pattern
with running the test repeatedly and either don't care like with
pac_instruction_not_nop or potentially have the same issue like
exec_sign_all.

The PAC tests are very fast, running in a second or two even in emulation,
so the 100x increased cost is mildly irritating but not a huge issue. The
bulk of the overhead is in the exec_sign_all test which does a fork() and
exec() per iteration.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241111-arm64-pac-test-collisions-v1-2-171875f37e44@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-12 15:05:44 +00:00
Mark Brown
27141b6905 kselftest/arm64: Don't leak pipe fds in pac.exec_sign_all()
The PAC exec_sign_all() test spawns some child processes, creating pipes
to be stdin and stdout for the child. It cleans up most of the file
descriptors that are created as part of this but neglects to clean up the
parent end of the child stdin and stdout. Add the missing close() calls.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241111-arm64-pac-test-collisions-v1-1-171875f37e44@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-12 15:05:44 +00:00
Mark Brown
3e360ef0c0 kselftest/arm64: Corrupt P0 in the irritator when testing SSVE
When building for streaming SVE the irritator for SVE skips updates of both
P0 and FFR. While FFR is skipped since it might not be present there is no
reason to skip corrupting P0 so switch to an instruction valid in streaming
mode and move the ifdef.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241107-arm64-fp-stress-irritator-v2-3-c4b9622e36ee@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-12 14:52:20 +00:00
Paul E. McKenney
930d4e1344 rcutorture: Add light-weight SRCU scenario
This commit adds an rcutorture scenario that tests light-weight SRCU
readers.  While in the area, it adjusts the size of the TREE10 scenario.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: <bpf@vger.kernel.org>
Reviewed-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
2024-11-12 15:44:53 +01:00
Catalin Marinas
016d659e62 kselftest/arm64: Fix missing printf() argument in gcs/gcs-stress.c
Compiling the child_cleanup() function results in:

gcs-stress.c: In function ‘child_cleanup’:
gcs-stress.c:266:75: warning: format ‘%d’ expects a matching ‘int’ argument [-Wformat=]
  266 |                                 ksft_print_msg("%s: Exited due to signal %d\n",
      |                                                                          ~^
      |                                                                           |
      |                                                                           int

Add the missing child->exit_signal argument.

Fixes: 05e6cfff58 ("kselftest/arm64: Add a GCS stress test")
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-12 14:39:30 +00:00
Mark Brown
7dbd26d0b2 kselftest/arm64: Add FPMR coverage to fp-ptrace
Add coverage for FPMR to fp-ptrace. FPMR can be available independently of
SVE and SME, if SME is supported then FPMR is cleared by entering and
exiting streaming mode. As with other registers we generate random values
to load into the register, we restrict these to bitfields which are always
defined. We also leave bitfields where the valid values are affected by
the set of supported FP8 formats zero to reduce complexity, it is unlikely
that specific bitfields will be affected by ptrace issues.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241112-arm64-fp-ptrace-fpmr-v2-3-250b57c61254@kernel.org
[catalin.marinas@arm.com: use REG_FPMR instead of FPMR]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-12 13:28:49 +00:00
Mark Brown
7e9c5b0000 kselftest/arm64: Expand the set of ZA writes fp-ptrace does
Currently our test for implementable ZA writes is written in a bit of a
convoluted fashion which excludes all changes where we clear SVCR.SM even
though we can actually support that since changing the vector length resets
SVCR. Make the logic more direct, enabling us to actually run these cases.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241112-arm64-fp-ptrace-fpmr-v2-2-250b57c61254@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-12 13:20:03 +00:00
Mark Brown
c0350076c1 kselftets/arm64: Use flag bits for features in fp-ptrace assembler code
The assembler portions of fp-ptrace are passed feature flags by the C code
indicating which architectural features are supported. Currently these use
an entire register for each flag which is wasteful and gets cumbersome as
new flags are added. Switch to using flag bits in a single register to make
things easier to maintain.

No functional change.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241112-arm64-fp-ptrace-fpmr-v2-1-250b57c61254@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-12 13:20:02 +00:00
Mark Brown
c297aa7d3f kselftest/arm64: Enable build of PAC tests with LLVM=1
Currently we don't build the PAC selftests when building with LLVM=1 since
we attempt to test for PAC support in the toolchain before we've set up the
build system to point at LLVM in lib.mk, which has to be one of the last
things in the Makefile.

Since all versions of LLVM supported for use with the kernel have PAC
support we can just sidestep the issue by just assuming PAC is there when
doing a LLVM=1 build.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241111-arm64-selftest-pac-clang-v1-1-08599ceee418@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-12 13:19:06 +00:00
Mark Brown
116e50d647 kselftest/arm64: Check that SVCR is 0 in signal handlers
We don't currently validate that we exit streaming mode and clear ZA when
we enter a signal handler. Add simple checks for this in the SSVE and ZA
tests.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241106-arm64-fpmr-signal-test-v1-1-31fa34ce58fe@kernel.org
[catalin.marinas@arm.com: Use %lx in fprintf() as uint64_t seems to be unsigned long in glibc]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-12 13:18:13 +00:00
Catalin Marinas
929bbc16ab selftests/mm: Fix unused function warning for aarch64_write_signal_pkey()
Since commit 49f59573e9 ("selftests/mm: Enable pkey_sighandler_tests
on arm64"), pkey_sighandler_tests.c (which includes pkey-arm64.h via
pkey-helpers.h) ends up compiled for arm64. Since it doesn't use
aarch64_write_signal_pkey(), the compiler warns:

In file included from pkey-helpers.h:106,
                 from pkey_sighandler_tests.c:31:
pkey-arm64.h:130:13: warning: ‘aarch64_write_signal_pkey’ defined but not used [-Wunused-function]
  130 | static void aarch64_write_signal_pkey(ucontext_t *uctxt, u64 pkey)
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~

Make the aarch64_write_signal_pkey() a 'static inline void' function to
avoid the compiler warning.

Fixes: f5b5ea51f7 ("selftests: mm: make protection_keys test work on arm64")
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Joey Gouly <joey.gouly@arm.com>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com>
Link: https://lore.kernel.org/r/20241108110549.1185923-1-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-11 22:46:52 +00:00
Catalin Marinas
694e2803fe kselftest/arm64: Fix printf() compiler warnings in the arm64 syscall-abi.c tests
Fix the incorrect length modifiers in arm64/abi/syscall-abi.c.

Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Mark Brown <broonie@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241108134920.1233992-4-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-11 22:45:42 +00:00
Catalin Marinas
0cc6b94a44 kselftest/arm64: Fix printf() warning in the arm64 MTE prctl() test
While prctl() returns an 'int', the PR_MTE_TCF_MASK is defined as
unsigned long which results in the larger type following a bitwise 'and'
operation. Cast the printf() argument to 'int'.

Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241108134920.1233992-3-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-11 22:45:36 +00:00
Catalin Marinas
b6bd50dd3b kselftest/arm64: Fix printf() compiler warnings in the arm64 fp tests
Lots of incorrect length modifiers, missing arguments or conversion
specifiers. Fix them.

Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Mark Brown <broonie@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241108134920.1233992-2-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-11 22:44:06 +00:00
Mark Brown
ae465d9ca1 kselftest/arm64: Fix build with stricter assemblers
While some assemblers (including the LLVM assembler I mostly use) will
happily accept SMSTART as an instruction by default others, specifically
gas, require that any architecture extensions be explicitly enabled.
The assembler SME test programs use manually encoded helpers for the new
instructions but no SMSTART helper is defined, only SM and ZA specific
variants.  Unfortunately the irritators that were just added use plain
SMSTART so on stricter assemblers these fail to build:

za-test.S:160: Error: selected processor does not support `smstart'

Switch to using SMSTART ZA via the manually encoded smstart_za macro we
already have defined.

Fixes: d65f27d240 ("kselftest/arm64: Implement irritators for ZA and ZT")
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241108-arm64-selftest-asm-error-v1-1-7ce27b42a677@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2024-11-11 22:39:01 +00:00
Linus Torvalds
3022e9d00e sched_ext: Fixes for v6.12-rc7
- The fair sched class currently has a bug where its balance() returns true
   telling the sched core that it has tasks to run but then NULL from
   pick_task(). This makes sched core call sched_ext's pick_task() without
   preceding balance() which can lead to stalls in partial mode. For now,
   work around by detecting the condition and forcing the CPU to go through
   another scheduling cycle.
 
 - Add a missing newline to an error message and fix drgn introspection tool
   which went out of sync.
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Merge tag 'sched_ext-for-6.12-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

Pull sched_ext fixes from Tejun Heo:

 - The fair sched class currently has a bug where its balance() returns
   true telling the sched core that it has tasks to run but then NULL
   from pick_task(). This makes sched core call sched_ext's pick_task()
   without preceding balance() which can lead to stalls in partial mode.

   For now, work around by detecting the condition and forcing the CPU
   to go through another scheduling cycle.

 - Add a missing newline to an error message and fix drgn introspection
   tool which went out of sync.

* tag 'sched_ext-for-6.12-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
  sched_ext: Handle cases where pick_task_scx() is called without preceding balance_scx()
  sched_ext: Update scx_show_state.py to match scx_ops_bypass_depth's new type
  sched_ext: Add a missing newline at the end of an error message
2024-11-11 14:09:57 -08:00
Linus Torvalds
0ccd733ac9 virtio: bugfixes
Several small bugfixes all over the place.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fixes from Michael Tsirkin:
 "Several small bugfixes all over the place"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vdpa/mlx5: Fix error path during device add
  vp_vdpa: fix id_table array not null terminated error
  virtio_pci: Fix admin vq cleanup by using correct info pointer
  vDPA/ifcvf: Fix pci_read_config_byte() return code handling
  Fix typo in vringh_test.c
  vdpa: solidrun: Fix UB bug with devres
  vsock/virtio: Initialization of the dangling pointer occurring in vsk->trans
2024-11-11 09:06:17 -08:00
Rafael J. Wysocki
c285b11e28 Merge back thermal control material for 6.13 2024-11-11 15:20:44 +01:00
Peter Zijlstra
d5173f7537 objtool: Exclude __tracepoints data from ENDBR checks
For some, as of yet unexplained reason, Clang-19, but not GCC,
generates and endless stream of:

drivers/iio/imu/bno055/bno055_ser.o: warning: objtool: __tracepoint_send_chunk+0x20: data relocation to !ENDBR: __SCT__tp_func_send_chunk+0x0
drivers/iio/imu/bno055/bno055_ser.o: warning: objtool: __tracepoint_cmd_retry+0x20: data relocation to !ENDBR: __SCT__tp_func_cmd_retry+0x0
drivers/iio/imu/bno055/bno055_ser.o: warning: objtool: __tracepoint_write_reg+0x20: data relocation to !ENDBR: __SCT__tp_func_write_reg+0x0
drivers/iio/imu/bno055/bno055_ser.o: warning: objtool: __tracepoint_read_reg+0x20: data relocation to !ENDBR: __SCT__tp_func_read_reg+0x0
drivers/iio/imu/bno055/bno055_ser.o: warning: objtool: __tracepoint_recv+0x20: data relocation to !ENDBR: __SCT__tp_func_recv+0x0

Which is entirely correct, but harmless. Add the __tracepoints section
to the exclusion list.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20241108184618.GG38786@noisy.programming.kicks-ass.net
2024-11-11 11:49:42 +01:00
Linus Torvalds
28e43197c4 20 hotfixes, 14 of which are cc:stable.
Three affect DAMON.  Lorenzo's five-patch series to address the
 mmap_region error handling is here also.
 
 Apart from that, various singletons.
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Merge tag 'mm-hotfixes-stable-2024-11-09-22-40' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "20 hotfixes, 14 of which are cc:stable.

  Three affect DAMON. Lorenzo's five-patch series to address the
  mmap_region error handling is here also.

  Apart from that, various singletons"

* tag 'mm-hotfixes-stable-2024-11-09-22-40' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mailmap: add entry for Thorsten Blum
  ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove()
  signal: restore the override_rlimit logic
  fs/proc: fix compile warning about variable 'vmcore_mmap_ops'
  ucounts: fix counter leak in inc_rlimit_get_ucounts()
  selftests: hugetlb_dio: check for initial conditions to skip in the start
  mm: fix docs for the kernel parameter ``thp_anon=``
  mm/damon/core: avoid overflow in damon_feed_loop_next_input()
  mm/damon/core: handle zero schemes apply interval
  mm/damon/core: handle zero {aggregation,ops_update} intervals
  mm/mlock: set the correct prev on failure
  objpool: fix to make percpu slot allocation more robust
  mm/page_alloc: keep track of free highatomic
  mm: resolve faulty mmap_region() error path behaviour
  mm: refactor arch_calc_vm_flag_bits() and arm64 MTE handling
  mm: refactor map_deny_write_exec()
  mm: unconditionally close VMAs on error
  mm: avoid unsafe VMA hook invocation when error arises on mmap hook
  mm/thp: fix deferred split unqueue naming and locking
  mm/thp: fix deferred split queue not partially_mapped
2024-11-10 09:04:27 -08:00
Jakub Kicinski
252e01e682 selftests: net: add netlink-dumps to .gitignore
Commit 55d42a0c3f ("selftests: net: add a test for closing
a netlink socket ith dump in progress") added a new test
but did not add it to gitignore.

Reviewed-by: Joe Damato <jdamato@fastly.com>
Link: https://patch.msgid.link/20241108004731.2979878-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-09 16:10:48 -08:00
Linus Torvalds
da4373fbcf Thermal control fixes for 6.12-rc7
- Allow tripless thermal zones defined in a DT to be registered in
    accordance with the thermal DT bindings (Icenowy Zheng).
 
  - Annotate LMH IRQs with lockdep classes to prevent lockdep from
    reporting a possible recursive locking issue that cannot really
    occur (Dmitry Baryshkov).
 
  - Improve the thermal library "make clean" to remove a leftover
    symbolic link created during compilation and fix the sampling
    handler invocation in that library to pass the correct pointer
    to it (Emil Dahl Juhl, zhang jiao).
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Merge tag 'thermal-6.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control fixes from Rafael Wysocki:
 "These fix one issue in the qcom lmh thermal driver, a DT handling
  issue in the thermal core and two issues in the userspace thermal
  library:

   - Allow tripless thermal zones defined in a DT to be registered in
     accordance with the thermal DT bindings (Icenowy Zheng)

   - Annotate LMH IRQs with lockdep classes to prevent lockdep from
     reporting a possible recursive locking issue that cannot really
     occur (Dmitry Baryshkov)

   - Improve the thermal library "make clean" to remove a leftover
     symbolic link created during compilation and fix the sampling
     handler invocation in that library to pass the correct pointer to
     it (Emil Dahl Juhl, zhang jiao)"

* tag 'thermal-6.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal/of: support thermal zones w/o trips subnode
  tools/lib/thermal: Remove the thermal.h soft link when doing make clean
  tools/lib/thermal: Fix sampling handler context ptr
  thermal/drivers/qcom/lmh: Remove false lockdep backtrace
2024-11-08 13:20:45 -10:00
John Sperbeck
10299cdde8 KVM: selftests: use X86_MEMTYPE_WB instead of VMX_BASIC_MEM_TYPE_WB
In 08a7d25255 ("tools arch x86: Sync the msr-index.h copy with the
kernel sources"), VMX_BASIC_MEM_TYPE_WB was removed.  Use X86_MEMTYPE_WB
instead.

Fixes: 08a7d25255 ("tools arch x86: Sync the msr-index.h copy with the
kernel sources")
Signed-off-by: John Sperbeck <jsperbeck@google.com>
Message-ID: <20241106034031.503291-1-jsperbeck@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-11-08 05:57:12 -05:00
Paolo Bonzini
9893deb08b Merge tag 'kvm-x86-fixes-6.12-rcN' of https://github.com/kvm-x86/linux into HEAD
KVM x86 and selftests fixes for 6.12:

 - Increase the timeout for the memslot performance selftest to avoid false
   failures on arm64 and nested x86 platforms.

 - Fix a goof in the guest_memfd selftest where a for-loop initialized a
   bit mask to zero instead of BIT(0).

 - Disable strict aliasing when building KVM selftests to prevent the
   compiler from treating things like "u64 *" to "uint64_t *" cases as
   undefined behavior, which can lead to nasty, hard to debug failures.

 - Force -march=x86-64-v2 for KVM x86 selftests if and only if the uarch
   is supported by the compiler.

 - When emulating a guest TLB flush for a nested guest, flush vpid01, not
   vpid02, if L2 is active but VPID is disabled in vmcs12, i.e. if L2 and
   L1 are sharing VPID '0' (from L1's perspective).

 - Fix a bug in the SNP initialization flow where KVM would return '0' to
   userspace instead of -errno on failure.
2024-11-08 05:57:00 -05:00
Muhammad Usama Anjum
0268d45799 selftests: hugetlb_dio: check for initial conditions to skip in the start
The test should be skipped if initial conditions aren't fulfilled in the
start instead of failing and outputting non-compliant TAP logs.  This kind
of failure pollutes the results.  The initial conditions are:

- The test should only execute if /tmp file can be allocated.
- The test should only execute if huge pages are free.

Before:
TAP version 13
1..4
Bail out! Error opening file
: Read-only file system (30)
 # Planned tests != run tests (4 != 0)
 # Totals: pass:0 fail:0 xfail:0 xpass:0 skip:0 error:0

After:
TAP version 13
1..0 # SKIP Unable to allocate file: Read-only file system

Link: https://lkml.kernel.org/r/20241101141557.3159432-1-usama.anjum@collabora.com
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Fixes: 3a103b5315 ("selftest: mm: Test if hugepage does not get leaked during __bio_release_pages()")
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-11-07 14:14:59 -08:00