diff options
Diffstat (limited to 'arch/x86/kvm/cpuid.c')
| -rw-r--r-- | arch/x86/kvm/cpuid.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 52524e0ca97f..88a5426674a1 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -510,10 +510,17 @@ static int kvm_set_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid_entry2 *e2, int r; /* + * Apply pending runtime CPUID updates to the current CPUID entries to + * avoid false positives due to mismatches on KVM-owned feature flags. + */ + if (vcpu->arch.cpuid_dynamic_bits_dirty) + kvm_update_cpuid_runtime(vcpu); + + /* * Swap the existing (old) entries with the incoming (new) entries in * order to massage the new entries, e.g. to account for dynamic bits - * that KVM controls, without clobbering the current guest CPUID, which - * KVM needs to preserve in order to unwind on failure. + * that KVM controls, without losing the current guest CPUID, which KVM + * needs to preserve in order to unwind on failure. * * Similarly, save the vCPU's current cpu_caps so that the capabilities * can be updated alongside the CPUID entries when performing runtime @@ -1135,6 +1142,7 @@ void kvm_set_cpu_caps(void) F(AMD_STIBP), F(AMD_STIBP_ALWAYS_ON), F(AMD_IBRS_SAME_MODE), + PASSTHROUGH_F(EFER_LMSLE_MBZ), F(AMD_PSFD), F(AMD_IBPB_RET), ); |