diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2023-09-23 00:06:34 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2023-09-23 12:35:49 +0300 |
| commit | e8d93d5d93f85949e7299be289c6e7e1154b2f78 (patch) | |
| tree | 955e0da29f9a471cd2758c197296674ca3ec37b9 | |
| parent | 0df9dab891ff0d9b646d82e4fe038229e4c02451 (diff) | |
| download | linux-e8d93d5d93f85949e7299be289c6e7e1154b2f78.tar.xz | |
KVM: SVM: INTERCEPT_RDTSCP is never intercepted anyway
svm_recalc_instruction_intercepts() is always called at least once
before the vCPU is started, so the setting or clearing of the RDTSCP
intercept can be dropped from the TSC_AUX virtualization support.
Extracted from a patch by Tom Lendacky.
Cc: stable@vger.kernel.org
Fixes: 296d5a17e793 ("KVM: SEV-ES: Use V_TSC_AUX if available instead of RDTSC/MSR_TSC_AUX intercepts")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/svm/sev.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index b9a0a939d59f..fa1fb81323b5 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -3027,11 +3027,8 @@ static void sev_es_init_vmcb(struct vcpu_svm *svm) if (boot_cpu_has(X86_FEATURE_V_TSC_AUX) && (guest_cpuid_has(&svm->vcpu, X86_FEATURE_RDTSCP) || - guest_cpuid_has(&svm->vcpu, X86_FEATURE_RDPID))) { + guest_cpuid_has(&svm->vcpu, X86_FEATURE_RDPID))) set_msr_interception(vcpu, svm->msrpm, MSR_TSC_AUX, 1, 1); - if (guest_cpuid_has(&svm->vcpu, X86_FEATURE_RDTSCP)) - svm_clr_intercept(svm, INTERCEPT_RDTSCP); - } } void sev_init_vmcb(struct vcpu_svm *svm) |