Re: [PATCH v16 05/13] x86/sev: Add Secure TSC support for SNP guests

Borislav Petkov
2025-01-07T10:42:55Z

On Mon, Jan 06, 2025 at 06:16:25PM +0530, Nikunj A Dadhania wrote:
> diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c
> index 0f81f70aca82..715c2c09582f 100644
> --- a/arch/x86/coco/core.c
> +++ b/arch/x86/coco/core.c
> @@ -97,6 +97,10 @@ static bool noinstr amd_cc_platform_has(enum cc_attr attr)
> case CC_ATTR_GUEST_SEV_SNP:
> return sev_status & MSR_AMD64_SEV_SNP_ENABLED;
>
> + case CC_ATTR_GUEST_SNP_SECURE_TSC:
> + return (sev_status & MSR_AMD64_SEV_SNP_ENABLED) &&

This is new here?

> + (sev_status & MSR_AMD64_SNP_SECURE_TSC);
> +

--
Regards/Gruss,
Boris.