x86/amd: Fix DE_CFG races and CPUID rescan issues

[PATCH 0/3] x86/amd: Fix DE_CFG races and CPUID rescan issues

Andrew Cooper posted 3 patches 2 weeks, 3 days ago

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Patches applied successfully (tree, apply log)
git fetch https://gitlab.com/xen-project/patchew/xen tags/patchew/20251126132220.881028-1-andrew.cooper3@citrix.com

xen/arch/x86/cpu/amd.c               | 232 +++++++++++++--------------
xen/arch/x86/cpu/cpu.h               |   3 +-
xen/arch/x86/cpu/hygon.c             |   6 +-
xen/arch/x86/cpu/microcode/amd.c     |   2 -
xen/arch/x86/include/asm/processor.h |   2 -
5 files changed, 121 insertions(+), 124 deletions(-)

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[PATCH 0/3] x86/amd: Fix DE_CFG races and CPUID rescan issues

Posted by Andrew Cooper 2 weeks, 3 days ago

This is sufficient to fix the CPUID recan issues found by XenServer's testing,
and a DE_CFG bug I found along the way.

There are other CPUID rescan issues which will take further work to fix.

Andrew Cooper (3):
  x86/amd: Use setup_force_cpu_cap() for BTC_NO
  x86/amd: Stop updating the Zenbleed mitigation dynamically
  x86/amd: Fix race editing DE_CFG

 xen/arch/x86/cpu/amd.c               | 232 +++++++++++++--------------
 xen/arch/x86/cpu/cpu.h               |   3 +-
 xen/arch/x86/cpu/hygon.c             |   6 +-
 xen/arch/x86/cpu/microcode/amd.c     |   2 -
 xen/arch/x86/include/asm/processor.h |   2 -
 5 files changed, 121 insertions(+), 124 deletions(-)


base-commit: 08c787f66cced18f0d0afafd86a040341adbd031
-- 
2.39.5