[GIT PULL] x86/cache for v7.2-rc1

[Borislav Petkov]

Hi Linus,

please pull the x86 resource control lineup for v7.2-rc1.

Thx.

---

The following changes since commit 7fd2df204f342fc17d1a0bfcd474b24232fb0f32:

  Linux 7.1-rc2 (2026-05-03 14:21:25 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_cache_for_v7.2_rc1

for you to fetch changes up to 1cfa74c683ea82d37156ccd7ab4f4659056dc701:

  fs/resctrl: Document tasks file behaviour for task id 0 and idle tasks (2026-05-08 12:27:00 +0200)

----------------------------------------------------------------
Preparatory work for MPAM counter assignment:

- Simplify the error handling path when creating monitor group event
  configuration directories

- Make the MBM event filter configurable only on architectures that
  support it and expose this with the respective file modes in the event
  config

- Disallow the MBA software controller on systems where MBM counters are
  assignable, as it requires continuous bandwidth measurement that
  assignable counters do not guarantee

- Replace a compile-time Kconfig option for fixed counter assignment
  with a per-architecture runtime property, and expose whether the
  counter assignment mode is changeable to userspace

- Continue counter allocation across all domains instead of aborting at
  the first failure

- Document that automatic MBM counter assignment is best effort and may
  not assign counters to all domains

- Document the behavior of task ID 0 and idle tasks in the resctrl tasks
  file

----------------------------------------------------------------
Ben Horgan (7):
      fs/resctrl: Tidy up the error path in resctrl_mkdir_event_configs()
      x86,fs/resctrl: Create 'event_filter' files read only if they're not configurable
      fs/resctrl: Disallow the software controller when MBM counters are assignable
      fs/resctrl: Add monitor property 'mbm_cntr_assign_fixed'
      fs/resctrl: Continue counter allocation after failure
      fs/resctrl: Document that automatic counter assignment is best effort
      fs/resctrl: Document tasks file behaviour for task id 0 and idle tasks

 Documentation/filesystems/resctrl.rst | 22 +++++++++++++------
 arch/x86/kernel/cpu/resctrl/monitor.c |  1 +
 fs/resctrl/internal.h                 |  2 ++
 fs/resctrl/monitor.c                  | 30 ++++++++++++++++++++------
 fs/resctrl/rdtgroup.c                 | 40 ++++++++++++++++++++++-------------
 include/linux/resctrl.h               | 18 ++++++++++------
 6 files changed, 78 insertions(+), 35 deletions(-)


-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette