[GIT PULL] x86/cpu for v6.8

[Borislav Petkov]

Hi Linus,

please pull the pile of x86/cpu changes for v6.8.

Thx.

---

The following changes since commit b85ea95d086471afb4ad062012a4d73cd328fa86:

  Linux 6.7-rc1 (2023-11-12 16:19:07 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_cpu_for_v6.8

for you to fetch changes up to 232afb557835d6f6859c73bf610bad308c96b131:

  x86/CPU/AMD: Add X86_FEATURE_ZEN1 (2023-12-12 11:17:37 +0100)

----------------------------------------------------------------
- Add synthetic X86_FEATURE flags for the different AMD Zen generations
  and use them everywhere instead of ad-hoc family/model checks. Drop an
  ancient AMD errata checking facility as a result

- Fix a fragile initcall ordering in intel_epb

- Do not issue the MFENCE+LFENCE barrier for the TSC deadline and X2APIC
  MSRs on AMD as it is not needed there

----------------------------------------------------------------
Borislav Petkov (AMD) (15):
      x86/barrier: Do not serialize MSR accesses on AMD
      x86/CPU/AMD: Add ZenX generations flags
      x86/CPU/AMD: Carve out the erratum 1386 fix
      x86/CPU/AMD: Move the Zen3 BTC_NO detection to the Zen3 init function
      x86/CPU/AMD: Move erratum 1076 fix into the Zen1 init function
      x86/CPU/AMD: Call the spectral chicken in the Zen2 init function
      x86/CPU/AMD: Rename init_amd_zn() to init_amd_zen_common()
      x86/CPU/AMD: Move Zenbleed check to the Zen2 init function
      x86/CPU/AMD: Move the DIV0 bug detection to the Zen1 init function
      x86/CPU/AMD: Get rid of amd_erratum_1054[]
      x86/CPU/AMD: Get rid of amd_erratum_383[]
      x86/CPU/AMD: Get rid of amd_erratum_400[]
      x86/CPU/AMD: Get rid of amd_erratum_1485[]
      x86/CPU/AMD: Drop now unused CPU erratum checking function
      x86/CPU/AMD: Add X86_FEATURE_ZEN1

James Morse (1):
      x86/cpu/intel_epb: Don't rely on link order

 arch/x86/include/asm/barrier.h           |  18 ---
 arch/x86/include/asm/cpufeatures.h       |   8 +-
 arch/x86/include/asm/processor.h         |  18 +++
 arch/x86/kernel/cpu/amd.c                | 268 +++++++++++++++----------------
 arch/x86/kernel/cpu/common.c             |   7 +
 arch/x86/kernel/cpu/hygon.c              |   3 +
 arch/x86/kernel/cpu/intel_epb.c          |   2 +-
 tools/arch/x86/include/asm/cpufeatures.h |   2 +-
 8 files changed, 170 insertions(+), 156 deletions(-)


-- 
Regards/Gruss,
    Boris.

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