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

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Date:   Mon, 26 Jun 2023 12:22:09 -0700
From:   Dave Hansen <dave.hansen@...ux.intel.com>
To:     torvalds@...ux-foundation.org
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Dave Hansen <dave.hansen@...ux.intel.com>
Subject: [GIT PULL] x86/platform for 6.5

Hi Linus,

Please pull some x86/platform changes for 6.5. These allow CPUs in
SGX/HPE Ultraviolet to start using Sub-NUMA clustering (SNC) mode. SNC
has been around outside the UV world for a while but evidently never
worked on UV systems.

SNC is rather notorious for breaking bad assumptions of a 1:1
relationship between physical sockets and NUMA nodes.  The UV code
was rather prolific with these assumptions and took quite a bit
of refactoring to remove them.

--

The following changes since commit 7877cb91f1081754a1487c144d85dc0d2e2e7fc4:

  Linux 6.4-rc4 (2023-05-28 07:49:00 -0400)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_platform_for_6.5

for you to fetch changes up to 73b3108dfd9d53ea565c0777a27007c1c621467d:

  x86/platform/uv: Update UV[23] platform code for SNC (2023-05-31 09:35:00 -0700)

----------------------------------------------------------------
Add UV platform support for sub-NUMA clustering

----------------------------------------------------------------
Steve Wahl (8):
      x86/platform/uv: Add platform resolving #defines for misc GAM_MMIOH_REDIRECT*
      x86/platform/uv: Introduce helper function uv_pnode_to_socket.
      x86/platform/uv: Fix printed information in calc_mmioh_map
      x86/platform/uv: When searching for minimums, start at INT_MAX not 99999
      x86/platform/uv: Helper functions for allocating and freeing conversion tables
      x86/platform/uv: UV support for sub-NUMA clustering
      x86/platform/uv: Remove remaining BUG_ON() and BUG() calls
      x86/platform/uv: Update UV[23] platform code for SNC

 arch/x86/include/asm/uv/uv_hub.h   |  32 ++--
 arch/x86/include/asm/uv/uv_mmrs.h  |  18 ++-
 arch/x86/kernel/apic/x2apic_uv_x.c | 318 +++++++++++++++++++++++--------------
 3 files changed, 232 insertions(+), 136 deletions(-)