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KVM: x86/pmu: Accept 0 for absent PMU MSRs when host-initiated if !enable_pmu
authorLike Xu <likexu@tencent.com>
Wed, 1 Jun 2022 03:19:23 +0000 (11:19 +0800)
committerPaolo Bonzini <pbonzini@redhat.com>
Wed, 8 Jun 2022 17:06:18 +0000 (13:06 -0400)
commit8e6a58e28b34e8d247e772159b8fa8f6bae39192
tree3427924d1cacabb890b52856a03b58349ffdad03tree
parent6ef25aa0a961298278301ae1d88106c701eb73facommit | diff
KVM: x86/pmu: Accept 0 for absent PMU MSRs when host-initiated if !enable_pmu

Whenever an MSR is part of KVM_GET_MSR_INDEX_LIST, as is the case for
MSR_K7_EVNTSEL0 or MSR_F15H_PERF_CTL0, it has to be always retrievable
and settable with KVM_GET_MSR and KVM_SET_MSR.

Accept a zero value for these MSRs to obey the contract.

Signed-off-by: Like Xu <likexu@tencent.com>
Message-Id: <20220601031925.59693-1-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/pmu.c diff | blob | history
arch/x86/kvm/svm/pmu.c diff | blob | history
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