Changes for two software visible changes in the Intel Feb 2022 microcode drop.
1) Deprecation of TSX on more client parts
2) Retrofitting of AMD's MSR_SPEC_CTRL.PSFD to various CPUs

These patches have been committed and backported to 4.14 and later.

Andrew Cooper (6):
  x86/spec-ctrl: Clean up MSR_MCU_OPT_CTRL handling
  x86/tsx: Move has_rtm_always_abort to an outer scope
  x86/tsx: Cope with TSX deprecation on WHL-R/CFL-R
  tests/tsx: Extend test-tsx to check MSR_MCU_OPT_CTRL
  x86/cpuid: Infrastructure for cpuid word 7:2.edx
  x86/spec-ctrl: Support Intel PSFD for guests

 docs/misc/xen-command-line.pandoc           |  25 +++++--
 tools/libs/light/libxl_cpuid.c              |   2 +
 tools/misc/xen-cpuid.c                      |   6 ++
 tools/tests/tsx/test-tsx.c                  |   9 ++-
 xen/arch/x86/acpi/power.c                   |   3 +-
 xen/arch/x86/cpu/common.c                   |   4 ++
 xen/arch/x86/cpu/intel.c                    |  32 +++++++++
 xen/arch/x86/include/asm/cpufeature.h       |   1 +
 xen/arch/x86/include/asm/msr-index.h        |   2 +
 xen/arch/x86/include/asm/processor.h        |   3 +
 xen/arch/x86/include/asm/spec_ctrl.h        |   2 -
 xen/arch/x86/msr.c                          |   2 +-
 xen/arch/x86/platform_hypercall.c           |   3 +
 xen/arch/x86/smpboot.c                      |   3 +-
 xen/arch/x86/spec_ctrl.c                    |  52 +++++++-------
 xen/arch/x86/tsx.c                          | 102 ++++++++++++++++++++++++----
 xen/include/public/arch-x86/cpufeatureset.h |   3 +
 xen/include/xen/lib/x86/cpuid.h             |  13 +++-
 xen/tools/gen-cpuid.py                      |   2 +-
 19 files changed, 211 insertions(+), 58 deletions(-)

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2.11.0