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authorPaolo Bonzini <pbonzini@redhat.com>2023-09-23 00:06:34 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2023-09-23 12:35:49 +0300
commite8d93d5d93f85949e7299be289c6e7e1154b2f78 (patch)
tree955e0da29f9a471cd2758c197296674ca3ec37b9
parent0df9dab891ff0d9b646d82e4fe038229e4c02451 (diff)
downloadlinux-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.c5
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)