From: Ketan Chaturvedi <Ketan.Chaturvedi@xxxxxxx>
Enable the Secure TSC capability and add it to SEV supported features to
allow the userspave to set the Secure TSC feature for SNP guests.
Signed-off-by: Ketan Chaturvedi <Ketan.Chaturvedi@xxxxxxx>
Signed-off-by: Nikunj A Dadhania <nikunj@xxxxxxx>
---
arch/x86/kvm/svm/sev.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 9adab01d9003..c37fcd164413 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -2966,6 +2966,9 @@ void __init sev_set_cpu_caps(void)
if (sev_snp_enabled) {
kvm_cpu_cap_set(X86_FEATURE_SEV_SNP);
kvm_caps.supported_vm_types |= BIT(KVM_X86_SNP_VM);
+
+ if (cpu_feature_enabled(X86_FEATURE_SNP_SECURE_TSC))
+ kvm_cpu_cap_set(X86_FEATURE_SNP_SECURE_TSC);
}
}
@@ -3088,6 +3091,9 @@ void __init sev_hardware_setup(void)
sev_supported_vmsa_features = 0;
if (sev_es_debug_swap_enabled)
sev_supported_vmsa_features |= SVM_SEV_FEAT_DEBUG_SWAP;
+
+ if (sev_snp_enabled && cpu_feature_enabled(X86_FEATURE_SNP_SECURE_TSC))
+ sev_supported_vmsa_features |= SVM_SEV_FEAT_SECURE_TSC;
}
void sev_hardware_unsetup(void)
--
2.34.1
