Allow HWCR.McStatusWrEn to be cleared once set, and allow
HWCR.TscFreqSel to be set from userspace.
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
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 | 22 ++++++--
tools/testing/selftests/kvm/Makefile | 1 +
.../selftests/kvm/x86_64/hwcr_msr_test.c | 52 +++++++++++++++++++
3 files changed, 71 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
