Messages in this thread Patch in this message | | | From | Nikunj A Dadhania <> | Subject | [PATCH v6 13/16] x86/kvmclock: Skip kvmclock when Secure TSC is available | Date | Tue, 28 Nov 2023 18:29:56 +0530 |
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For AMD SNP guests having Secure TSC enabled, skip using the kvmclock. The guest kernel will fallback and use Secure TSC based clocksource.
Signed-off-by: Nikunj A Dadhania <nikunj@amd.com> --- arch/x86/kernel/kvmclock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c index fb8f52149be9..e3de354abf74 100644 --- a/arch/x86/kernel/kvmclock.c +++ b/arch/x86/kernel/kvmclock.c @@ -288,7 +288,7 @@ void __init kvmclock_init(void) { u8 flags; - if (!kvm_para_available() || !kvmclock) + if (!kvm_para_available() || !kvmclock || cpu_feature_enabled(X86_FEATURE_SNP_SECURE_TSC)) return; if (kvm_para_has_feature(KVM_FEATURE_CLOCKSOURCE2)) { -- 2.34.1
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