[PATCH v4 0/3] KVM: x86: Update HWCR virtualization

[Jim Mattson <jmattson@xxxxxxxxxx>]

Allow HWCR.McStatusWrEn to be cleared once set, and allow
HWCR.TscFreqSel to be set as well.

v1 -> v2: KVM no longer sets HWCR.TscFreqSel
          HWCR.TscFreqSel can be cleared from userspace
          Selftest modified accordingly
v2 -> v3: kvm_set_msr_common() changes simplified
v3 -> v4: kvm_set_msr_common() changes further simplified
          HWCR.TscFreqSel can be modified from the guest
	  Targets reordered in selftest Makefile

Jim Mattson (3):
  KVM: x86: Allow HWCR.McStatusWrEn to be cleared once set
  KVM: x86: Virtualize HWCR.TscFreqSel[bit 24]
  KVM: selftests: Test behavior of HWCR

 arch/x86/kvm/x86.c                            | 11 ++--
 tools/testing/selftests/kvm/Makefile          |  1 +
 .../selftests/kvm/x86_64/hwcr_msr_test.c      | 52 +++++++++++++++++++
 3 files changed, 60 insertions(+), 4 deletions(-)
 create mode 100644 tools/testing/selftests/kvm/x86_64/hwcr_msr_test.c

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2.42.0.582.g8ccd20d70d-goog