From f742b90e61bb53b27771f64bdae05db03a6ab1f2 Mon Sep 17 00:00:00 2001 From: Brijesh Singh Date: Thu, 24 Feb 2022 10:55:49 -0600 Subject: x86/mm: Extend cc_attr to include AMD SEV-SNP The CC_ATTR_GUEST_SEV_SNP can be used by the guest to query whether the SNP (Secure Nested Paging) feature is active. Signed-off-by: Brijesh Singh Signed-off-by: Borislav Petkov Link: https://lore.kernel.org/r/20220307213356.2797205-10-brijesh.singh@amd.com --- arch/x86/coco/core.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/x86/coco') diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c index fc1365dd927e..dafd4881ce29 100644 --- a/arch/x86/coco/core.c +++ b/arch/x86/coco/core.c @@ -57,6 +57,9 @@ static bool amd_cc_platform_has(enum cc_attr attr) return (sev_status & MSR_AMD64_SEV_ENABLED) && !(sev_status & MSR_AMD64_SEV_ES_ENABLED); + case CC_ATTR_GUEST_SEV_SNP: + return sev_status & MSR_AMD64_SEV_SNP_ENABLED; + default: return false; } -- cgit v1.2.3