Tags

Tags give the ability to mark specific points in history as being important

  • x86_alternatives_for_v6.3_rc1

    923510c8 · x86/static_call: Add support for Jcc tail-calls · 
    - Teach the static_call patching infrastructure to handle conditional
tall calls properly which can be static calls too

- Add proper struct alt_instr.flags which controls different aspects of
  insn patching behavior

  • x86-platform-2023-02-20

    7ddf0050 · x86/mce/dev-mcelog: use strscpy() to instead of strncpy() · 
    Changes in this cycle:

 - Simplify add_rtc_cmos()

 - Use strscpy() in the mcelog code

Signed-off-by: Ingo Molnar <mingo@kernel.org>

  • x86-mm-2023-02-20

    ebd3ad60 · x86/cpu: Use cpu_feature_enabled() when checking global pages support · 
    Micro-optimize __flush_tlb_all().

Signed-off-by: Ingo Molnar <mingo@kernel.org>

  • x86-fpu-2023-02-20

    cb3ea4b7 · x86/fpu: Don't set TIF_NEED_FPU_LOAD for PF_IO_WORKER threads · 
    Updates in this cycle:

 - Replace zero-length array in struct xregs_state with flexible-array member,
   to help the enabling of stricter compiler checks.

 - Don't set TIF_NEED_FPU_LOAD for PF_IO_WORKER threads.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

  • x86-core-2023-02-20

    ce3ba2af · x86: Suppress KMSAN reports in arch_within_stack_frames() · 
    Changes in this cycle:

 - Clean up the signal frame layout tests

 - Suppress KMSAN false positive reports in arch_within_stack_frames()

Signed-off-by: Ingo Molnar <mingo@kernel.org>

  • x86-build-2023-02-20

    f9bb7f6a · x86/build: Make 64-bit defconfig the default · 
    Make the 64-bit defconfig the x86 default for all builds,
unless x86-32 is requested explicitly.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

  • x86-boot-2023-02-20

    e2869bd7 · x86/acpi/boot: Do not register processors that cannot be onlined for x2APIC · 
    Changes in this cycle:

 - Robustify/fix calling startup_{32,64}() from the decompressor code,
   and removing x86 quirk from scripts/head-object-list.txt as
   a result.

 - Do not register processors that cannot be onlined for x2APIC

Signed-off-by: Ingo Molnar <mingo@kernel.org>

  • x86-asm-2023-02-20

    65c24d7b · x86/lib: Fix compiler and kernel-doc warnings · 
    Header fixes and a DocBook fix.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

  • sched-core-2023-02-20

    7c4a5b89 · sched/rt: pick_next_rt_entity(): check list_entry · 
    Scheduler updates in this cycle are:

 - Improve the scalability of the CFS bandwidth unthrottling logic
   with large number of CPUs.

 - Fix & rework various cpuidle routines, simplify interaction with
   the generic scheduler code. Add __cpuidle methods as noinstr to
   objtool's noinstr detection and fix boatloads of cpuidle bugs & quirks.

 - Add new ABI: introduce MEMBARRIER_CMD_GET_REGISTRATIONS,
   to query previously issued registrations.

 - Limit scheduler slice duration to the sysctl_sched_latency period,
   to improve scheduling granularity with a large number of SCHED_IDLE
   tasks.

 - Debuggability enhancement on sys_exit(): warn about disabled IRQs,
   but also enable them to prevent a cascade of followup problems and
   repeat warnings.

 - Fix the rescheduling logic in prio_changed_dl().

 - Micro-optimize cpufreq and sched-util methods.

 - Micro-optimize ttwu_runnable()

 - Micro-optimize the idle-scanning in update_numa_stats(),
   select_idle_capacity() and steal_cookie_task().

 - Update the RSEQ code & self-tests

 - Constify various scheduler methods

 - Remove unused methods

 - Refine __init tags

 - Documentation updates

 - ... Misc other cleanups, fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

  • perf-core-2023-02-20

    c828441f · perf/x86/intel/uncore: Add Meteor Lake support · 
    The latest perf updates in this cycle are:

 - Optimize perf_sample_data layout
 - Prepare sample data handling for BPF integration
 - Update the x86 PMU driver for Intel Meteor Lake
 - Restructure the x86 uncore code to fix a SPR (Sapphire Rapids)
   discovery breakage
 - Fix the x86 Zhaoxin PMU driver
 - Cleanups

Signed-off-by: Ingo Molnar <mingo@kernel.org>

  • locking-core-2023-02-20

    3b4863fa · vduse: Remove include of rwlock.h · 
    Updates for this cycle were:

 - rwsem micro-optimizations
 - spinlock micro-optimizations
 - cleanups, simplifications

Signed-off-by: Ingo Molnar <mingo@kernel.org>

  • x86-cleanups-2023-02-20

    fcb3a81d · x86/hotplug: Remove incorrect comment about mwait_play_dead() · 
    Miscellaneous cleanups in X86:

  - Correct the common copy and pasted mishandling of kstrtobool() in the
    strict_sas_size() setup function.

  - Make recalibrate_cpu_khz() an GPL only export.

  - Check TSC feature before doing anything else which avoids pointless
    code execution if TSC is not available.

  - Remove or fixup stale and misleading comments.

  - Remove unused or pointelessly duplicated variables.

  - Spelling and typo fixes.

  • timers-core-2023-02-20

    ab407a19 · Merge tag 'clocksource.2023.02.06b' of... · 
    Updates for timekeeping, timers and clockevent/source drivers:

  Core:

    - Yet another round of improvements to make the clocksource watchdog
      more robust:

      	 - Relax the clocksource-watchdog skew criteria to match the NTP
           criteria.

	 - Temporarily skip the watchdog when high memory latencies are
	   detected which can lead to false-positives.

	 - Provide an option to enable TSC skew detection even on systems
           where TSC is marked as reliable.

      Sigh!

    - Initialize the restart block in the nanosleep syscalls to be directed
      to the no restart function instead of doing a partial setup on entry.

      This prevents an erroneous restart_syscall() invocation from
      corrupting user space data. While such a situation is clearly a user
      space bug, preventing this is a correctness issue and caters to the
      least suprise principle.

    - Ignore the hrtimer slack for realtime tasks in schedule_hrtimeout()
      to align it with the nanosleep semantics.

  Drivers:

    - The obligatory new driver bindings for Mediatek, Rockchip and RISC-V
      variants.

    - Add support for the C3STOP misfeature to the RISC-V timer to handle
      the case where the timer stops in deeper idle state.

    - Set up a static key in the RISC-V timer correctly before first use.

    - The usual small improvements and fixes all over the place

  • irq-core-2023-02-20

    6f3ee0e2 · Merge tag 'irqchip-6.3' of... · 
    Updates for the interrupt subsystem:

  Core:

    - Move the interrupt affinity spreading mechanism into lib/group_cpus
      so it can be used for similar spreading requirements, e.g. in the
      block multi-queue code.

      This also contains a first usecase in the block multi-queue code which
      Jens asked to take along with the librarization.

    - Improve irqdomain locking to close a number race conditions which
      can be observed with massive parallel device driver probing.

    - Enforce and document the semantics of disable_irq() which cannot be
      invoked safely from non-sleepable context.

    - Move the IPI multiplexing code from the Apple AIC driver into the
      core. so it can be reused by RISCV.

  Drivers:

    - Plug OF node refcounting leaks in various drivers.

    - Correctly mark level triggered interrupts in the Broadcom L2 drivers.

    - The usual small fixes and improvements.

    - No new drivers for the record!

  • ras_core_for_v6.3_rc1

    8a01ec97 · x86/mce: Mask out non-address bits from machine check bank · 
    - Add support for reporting more bits of the physical address on error,
  on newer AMD CPUs

- Mask out bits which don't belong to the address of the error being
  reported

  • v6.2

    c9c3395d · Linux 6.2 · 
    Linux 6.2

  • x86-urgent-2023-02-19

    f9f57da2 · x86/mtrr: Revert 90b926e6 ("x86/pat: Fix pat_x_mtrr_type() for MTRR disabled case") · 
    A single fix for x86:

  Revert the recent change to the MTRR code which aimed to support
  SEV-SNP guests on Hyper-V. It cuased a regression on XEN Dom0
  kernels.

  The underlying issue of MTTR (mis)handling in the x86 code needs some
  deeper investigation and is definitely not 6.2 material.

  • timers-urgent-2023-02-19

    d125d134 · alarmtimer: Prevent starvation by small intervals and SIG_IGN · 
    A fix for a long standing issue in the alarmtimer code:

 Posix-timers armed with a short interval with an ignored signal result
 in an unpriviledged DoS. Due to the ignored signal the timer switches
 into self rearm mode. This issue had been "fixed" before but a rework of
 the alarmtimer code 5 years ago lost that workaround.

 There is no real good solution for this issue, which is also worked around
 in the core posix-timer code in the same way, but it certainly moved way
 up on the ever growing todo list.

  • irq-urgent-2023-02-19

    2b129f0b · PCI/MSI: Provide missing stubs for CONFIG_PCI_MSI=n · 
    A single fix for the PCI/MSI infrastructure:

 The addition of the new alloc/free interfaces in this cycle forgot to
 add stub functions for pci_msix_alloc_irq_at() and pci_msix_free_irq()
 for the CONFIG_PCI_MSI=n case

  • block-6.2-2023-02-17

    12504216 · Merge tag 'nvme-6.2-2022-02-17' of git://git.infradead.org/nvme into block-6.2 · 
    block-6.2-2023-02-17