Tags

rocm-5.6.0

ROCm release v5.6.0

v6.3.10

This is the 6.3.10 stable release

v6.1.36

This is the 6.1.36 stable release

v5.15.119

This is the 5.15.119 stable release

v5.10.186

This is the 5.10.186 stable release

v5.4.249

This is the 5.4.249 stable release

v4.19.288

This is the 4.19.288 stable release

v4.14.320

This is the 4.14.320 stable release

x86_sgx_for_v6.5

- A fix to avoid using a list iterator variable after the loop it is
  used in

x86_sev_for_v6.5

- Some SEV and CC platform helpers cleanup and simplifications now that
  the usage patterns are becoming apparent

x86_mtrr_for_v6.5

- A serious scrubbing of the MTRR code including adding a new map
  mechanism in order to look up the memory type of a region easily. Also
  address memory range lookup issues like returning an invalid memory
  type. Furthermore, this handles the decoupling of PAT from MTRR more
  naturally. All work by Juergen Gross

x86-mm-2023-06-27

Changes in this cycle were:

- Remove Xen-PV leftovers from init_32.c

- Fix __swp_entry_to_pte() warning splat for Xen PV guests,
  triggered on CONFIG_DEBUG_VM_PGTABLE=y

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

perf-core-2023-06-27

Perf events changes for v6.5:

- Rework & fix the event forwarding logic by extending the
  core interface. This fixes AMD PMU events that have to
  be forwarded from the core PMU to the IBS PMU.

- Add self-tests to test AMD IBS invocation via core PMU events

- Clean up Intel FixCntrCtl MSR encoding & handling

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

x86_misc_for_v6.5

- Remove the local symbols prefix of the get/put_user() exception
  handling symbols so that tools do not get confused by the presence of
  code belonging to the wrong symbol/not belonging to any symbol

- Improve csum_partial()'s performance

- Some improvements to the kcpuid tool

objtool-core-2023-06-27

objtool changes for v6.5:

- Build footprint & performance improvements:

    - Reduce memory usage with CONFIG_DEBUG_INFO=y

      In the worst case of an allyesconfig+CONFIG_DEBUG_INFO=y kernel, DWARF
      creates almost 200 million relocations, ballooning objtool's peak heap
      usage to 53GB.  These patches reduce that to 25GB.

      On a distro-type kernel with kernel IBT enabled, they reduce objtool's
      peak heap usage from 4.2GB to 2.8GB.

      These changes also improve the runtime significantly.

- Debuggability improvements:

    - Add the unwind_debug command-line option, for more extend unwinding
      debugging output.
    - Limit unreachable warnings to once per function
    - Add verbose option for disassembling affected functions
    - Include backtrace in verbose mode
    - Detect missing __noreturn annotations
    - Ignore exc_double_fault() __noreturn warnings
    - Remove superfluous global_noreturns entries
    - Move noreturn function list to separate file
    - Add __kunit_abort() to noreturns

- Unwinder improvements:

    - Allow stack operations in UNWIND_HINT_UNDEFINED regions
    - drm/vmwgfx: Add unwind hints around RBP clobber

- Cleanups:

    - Move the x86 entry thunk restore code into thunk functions
    - x86/unwind/orc: Use swap() instead of open coding it
    - Remove unnecessary/unused variables

- Fixes for modern stack canary handling

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

locking-core-2023-06-27

Locking changes for v6.5:

- Introduce cmpxchg128() -- aka. the demise of cmpxchg_double().

  The cmpxchg128() family of functions is basically & functionally
  the same as cmpxchg_double(), but with a saner interface: instead
  of a 6-parameter horror that forced u128 - u64/u64-halves layout
  details on the interface and exposed users to complexity,
  fragility & bugs, use a natural 3-parameter interface with u128 types.

- Restructure the generated atomic headers, and add
  kerneldoc comments for all of the generic atomic{,64,_long}_t
  operations. Generated definitions are much cleaner now,
  and come with documentation.

- Implement lock_set_cmp_fn() on lockdep, for defining an ordering
  when taking multiple locks of the same type. This gets rid of
  one use of lockdep_set_novalidate_class() in the bcache code.

- Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended
  variable shadowing generating garbage code on Clang on certain
  ARM builds.

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

x86_microcode_for_v6.5

- Load late on both SMT threads on AMD, just like it is being done in
  the early loading procedure

- Cleanups

sched-core-2023-06-27

Scheduler changes for v6.5:

- Scheduler SMP load-balancer improvements:

    - Avoid unnecessary migrations within SMT domains on hybrid systems.

      Problem:

        On hybrid CPU systems, (processors with a mixture of higher-frequency
	SMT cores and lower-frequency non-SMT cores), under the old code
	lower-priority CPUs pulled tasks from the higher-priority cores if
	more than one SMT sibling was busy - resulting in many unnecessary
	task migrations.

      Solution:

        The new code improves the load balancer to recognize SMT cores with more
        than one busy sibling and allows lower-priority CPUs to pull tasks, which
        avoids superfluous migrations and lets lower-priority cores inspect all SMT
        siblings for the busiest queue.

    - Implement the 'runnable boosting' feature in the EAS balancer: consider CPU
      contention in frequency, EAS max util & load-balance busiest CPU selection.

      This improves CPU utilization for certain workloads, while leaves other key
      workloads unchanged.

- Scheduler infrastructure improvements:

    - Rewrite the scheduler topology setup code by consolidating it
      into the build_sched_topology() helper function and building
      it dynamically on the fly.

    - Resolve the local_clock() vs. noinstr complications by rewriting
      the code: provide separate sched_clock_noinstr() and
      local_clock_noinstr() functions to be used in instrumentation code,
      and make sure it is all instrumentation-safe.

- Fixes:

    - Fix a kthread_park() race with wait_woken()

    - Fix misc wait_task_inactive() bugs unearthed by the -rt merge:
       - Fix UP PREEMPT bug by unifying the SMP and UP implementations.
       - Fix task_struct::saved_state handling.

    - Fix various rq clock update bugs, unearthed by turning on the rq clock
      debugging code.

    - Fix the PSI WINDOW_MIN_US trigger limit, which was easy to trigger by
      creating enough cgroups, by removing the warnign and restricting
      window size triggers to PSI file write-permission or CAP_SYS_RESOURCE.

    - Propagate SMT flags in the topology when removing degenerate domain

    - Fix grub_reclaim() calculation bug in the deadline scheduler code

    - Avoid resetting the min update period when it is unnecessary, in
      psi_trigger_destroy().

    - Don't balance a task to its current running CPU in load_balance(),
      which was possible on certain NUMA topologies with overlapping
      groups.

    - Fix the sched-debug printing of rq->nr_uninterruptible

- Cleanups:

    - Address various -Wmissing-prototype warnings, as a preparation
      to (maybe) enable this warning in the future.

    - Remove unused code

    - Mark more functions __init

    - Fix shadow-variable warnings

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

5.4.248-264

5.4.248-425