linux-kernel - [GIT PULL] x86/mtrr for 6.5

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Date:   Tue, 27 Jun 2023 13:53:11 +0200
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 6.5

Hi Linus,

please pull the MTRR cleanup Juergen has been working on for a while
now, for 6.5.

Thx.

---

The following changes since commit ac9a78681b921877518763ba0e89202254349d1b:

  Linux 6.4-rc1 (2023-05-07 13:34:35 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_mtrr_for_v6.5

for you to fetch changes up to 30d65d1b19850c9bc8c17dba8ebe9be5e0c17054:

  x86/xen: Set default memory type for PV guests to WB (2023-06-16 11:22:33 +0200)

----------------------------------------------------------------
- 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

----------------------------------------------------------------
Borislav Petkov (AMD) (1):
      x86/mtrr: Unify debugging printing

Juergen Gross (17):
      x86/mtrr: Remove physical address size calculation
      x86/mtrr: Replace size_or_mask and size_and_mask with a much easier concept
      x86/mtrr: Support setting MTRR state for software defined MTRRs
      x86/hyperv: Set MTRR state when running as SEV-SNP Hyper-V guest
      x86/xen: Set MTRR state when running as Xen PV initial domain
      x86/mtrr: Replace vendor tests in MTRR code
      x86/mtrr: Have only one set_mtrr() variant
      x86/mtrr: Move 32-bit code from mtrr.c to legacy.c
      x86/mtrr: Allocate mtrr_value array dynamically
      x86/mtrr: Add get_effective_type() service function
      x86/mtrr: Construct a memory map with cache modes
      x86/mtrr: Add mtrr=debug command line option
      x86/mtrr: Use new cache_map in mtrr_type_lookup()
      x86/mtrr: Don't let mtrr_type_lookup() return MTRR_TYPE_INVALID
      x86/mm: Only check uniform after calling mtrr_type_lookup()
      x86/mtrr: Remove unused code
      x86/xen: Set default memory type for PV guests to WB

 Documentation/admin-guide/kernel-parameters.txt |   4 +
 arch/x86/hyperv/ivm.c                           |   4 +
 arch/x86/include/asm/mtrr.h                     |  51 +-
 arch/x86/include/uapi/asm/mtrr.h                |  14 +-
 arch/x86/kernel/cpu/mtrr/Makefile               |   2 +-
 arch/x86/kernel/cpu/mtrr/amd.c                  |   2 +-
 arch/x86/kernel/cpu/mtrr/centaur.c              |  11 +-
 arch/x86/kernel/cpu/mtrr/cleanup.c              |  87 ++-
 arch/x86/kernel/cpu/mtrr/cyrix.c                |   2 +-
 arch/x86/kernel/cpu/mtrr/generic.c              | 675 ++++++++++++++++--------
 arch/x86/kernel/cpu/mtrr/legacy.c               |  90 ++++
 arch/x86/kernel/cpu/mtrr/mtrr.c                 | 206 ++------
 arch/x86/kernel/cpu/mtrr/mtrr.h                 |  31 +-
 arch/x86/kernel/setup.c                         |   2 +
 arch/x86/mm/pgtable.c                           |  24 +-
 arch/x86/xen/enlighten_pv.c                     |  54 ++
 16 files changed, 777 insertions(+), 482 deletions(-)
 create mode 100644 arch/x86/kernel/cpu/mtrr/legacy.c

-- 
Regards/Gruss,
    Boris.

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