[Xen-devel] [PATCH 0/6] x86: Improvements to handling of various CPU bugs

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

This series borrows the cpu_bug_* idea from Linux.  Using that, it reworks
some of the AMD issues which impact the ongoing effort to upstream Hygon CPU
support, and it works around the Harpertown SCE issue which breaks 64bit HVM
guests.

Andrew Cooper (6):
  x86/AMD Split init_amd() into per-uarch helpers
  x86/feature: Generalise synth and introduce a bug word
  x86/AMD: Rework XSA-9 / Erratum 121 handling entirely
  x86/AMD: Introduce and use X86_BUG_NULL_SEG
  x86/AMD: Fix handling of FPU pointer on Zen hardware
  x86/VT-x: Fix 64bit HVM guests on Harpertown cores

 xen/arch/x86/cpu/amd.c                      | 305 ++++++++++++++++------------
 xen/arch/x86/cpu/intel.c                    |   7 +
 xen/arch/x86/domain.c                       |  37 ++--
 xen/arch/x86/hvm/vmx/vmx.c                  |  30 ++-
 xen/arch/x86/xstate.c                       |   6 +-
 xen/include/asm-x86/amd.h                   |   5 -
 xen/include/asm-x86/cpufeature.h            |   6 +
 xen/include/asm-x86/cpufeatures.h           |  62 +++---
 xen/include/asm-x86/domain.h                |   2 +
 xen/include/asm-x86/hvm/hvm.h               |  10 +-
 xen/include/public/arch-x86/cpufeatureset.h |   1 +
 11 files changed, 289 insertions(+), 182 deletions(-)

-- 
2.1.4


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