linux-kernel - [GIT PULL] x86/cache for v6.19-rc1

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Message-ID: <20251201144645.GAaS2qVTm1ZgT5r6NU@fat_crate.local>
Date: Mon, 1 Dec 2025 15:46:45 +0100
From: Borislav Petkov <bp@...en8.de>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: x86-ml <x86@...nel.org>, lkml <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] x86/cache for v6.19-rc1

Hi Linus,

please pull the x86/cache lineup for v6.19-rc1.

Thx.

---

The following changes since commit 3a8660878839faadb4f1a6dd72c3179c1df56787:

  Linux 6.18-rc1 (2025-10-12 13:42:36 -0700)

are available in the Git repository at:

  ssh://git@...olite.kernel.org/pub/scm/linux/kernel/git/tip/tip tags/x86_cache_for_v6.19_rc1

for you to fetch changes up to ac7de456a37f9b126eb53b89c2bb27d625dc5fd9:

  fs/resctrl: Update bit_usage to reflect io_alloc (2025-11-22 14:30:34 +0100)

----------------------------------------------------------------
- Add support for AMD's Smart Data Cache Injection feature which allows
  for direct insertion of data from I/O devices into the L3 cache, thus
  bypassing DRAM and saving its bandwidth; the resctrl side of the feature
  allows the size of the L3 used for data injection to be controlled

- Add Intel Clearwater Forest to the list of CPUs which support Sub-NUMA
  clustering

- Other fixes and cleanups

----------------------------------------------------------------
Babu Moger (10):
      x86/cpufeatures: Add support for L3 Smart Data Cache Injection Allocation Enforcement
      x86/resctrl: Add SDCIAE feature in the command line options
      x86,fs/resctrl: Detect io_alloc feature
      x86,fs/resctrl: Implement "io_alloc" enable/disable handlers
      fs/resctrl: Introduce interface to display "io_alloc" support
      fs/resctrl: Add user interface to enable/disable io_alloc feature
      fs/resctrl: Introduce interface to display io_alloc CBMs
      fs/resctrl: Modify struct rdt_parse_data to pass mode and CLOSID
      fs/resctrl: Introduce interface to modify io_alloc capacity bitmasks
      fs/resctrl: Update bit_usage to reflect io_alloc

Chen Yu (1):
      x86/resctrl: Support Sub-NUMA Cluster (SNC) mode on Clearwater Forest

Reinette Chatre (1):
      fs/resctrl: Consider sparse masks when initializing new group's allocation

 Documentation/admin-guide/kernel-parameters.txt |   2 +-
 Documentation/filesystems/resctrl.rst           | 134 ++++++++--
 arch/x86/include/asm/cpufeatures.h              |   2 +
 arch/x86/kernel/cpu/cpuid-deps.c                |   1 +
 arch/x86/kernel/cpu/resctrl/core.c              |   9 +
 arch/x86/kernel/cpu/resctrl/ctrlmondata.c       |  40 +++
 arch/x86/kernel/cpu/resctrl/internal.h          |   5 +
 arch/x86/kernel/cpu/resctrl/monitor.c           |   1 +
 arch/x86/kernel/cpu/scattered.c                 |   1 +
 fs/resctrl/ctrlmondata.c                        | 309 ++++++++++++++++++++++--
 fs/resctrl/internal.h                           |  17 ++
 fs/resctrl/rdtgroup.c                           |  82 ++++++-
 include/linux/resctrl.h                         |  24 ++
 13 files changed, 580 insertions(+), 47 deletions(-)


-- 
Regards/Gruss,
    Boris.

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