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| author | Paolo Bonzini <pbonzini@redhat.com> | 2022-06-01 03:21:19 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-06-08 04:48:37 -0400 |
| commit | bfb088d9fb5abdd3fbf00bae9abdfee8b92265aa (patch) | |
| tree | f1a055b8beaaaf87004ce2fdf8a72a8494ee168f /arch/x86 | |
| parent | 98defd2e17803263f49548fea930cfc974d505aa (diff) | |
| download | linux-bfb088d9fb5abdd3fbf00bae9abdfee8b92265aa.tar.bz2 | |
KVM: vmx, pmu: accept 0 for host-initiated write to MSR_IA32_DS_AREA
Whenever an MSR is part of KVM_GET_MSR_INDEX_LIST, as is the case
for MSR_IA32_DS_AREA, it has to be always settable with KVM_SET_MSR.
Accept a zero value for these MSRs to obey the contract.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/vmx/pmu_intel.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/pmu_intel.c b/arch/x86/kvm/vmx/pmu_intel.c index 2fc90080dcce..5bc7cfc753fc 100644 --- a/arch/x86/kvm/vmx/pmu_intel.c +++ b/arch/x86/kvm/vmx/pmu_intel.c @@ -443,6 +443,8 @@ static int intel_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info) } break; case MSR_IA32_DS_AREA: + if (msr_info->host_initiated && data && !guest_cpuid_has(vcpu, X86_FEATURE_DS)) + return 1; if (is_noncanonical_address(data, vcpu)) return 1; pmu->ds_area = data; |