linux-kernel - [GIT PULL] x86/mtrr for v6.9-rc1

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Date: Mon, 11 Mar 2024 09:59:46 +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/mtrr for v6.9-rc1

Hi Linus,

please pull a single improvement of PAT MSR programming for v6.9-rc1.

Thx.

---

The following changes since commit b401b621758e46812da61fa58a67c3fd8d91de0d:

  Linux 6.8-rc5 (2024-02-18 12:56:25 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_mtrr_for_v6.9_rc1

for you to fetch changes up to ffc92cf3db62443c626469ef160f9276f296f6c6:

  x86/pat: Simplify the PAT programming protocol (2024-02-20 14:40:51 +0100)

----------------------------------------------------------------
 - Relax the PAT MSR programming which was unnecessarily using the MTRR
   programming protocol of disabling the cache around the changes. The
   reason behind this is the current algorithm triggering a #VE
   exception for TDX guests and unnecessarily complicating things

----------------------------------------------------------------
Kirill A. Shutemov (1):
      x86/pat: Simplify the PAT programming protocol

 arch/x86/kernel/cpu/cacheinfo.c | 7 ++++---
 arch/x86/mm/pat/memtype.c       | 9 +++------
 2 files changed, 7 insertions(+), 9 deletions(-)


-- 
Regards/Gruss,
    Boris.

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