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x86/sev: Add the Secure TSC feature for SNP guests

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Now that all the required plumbing is done for enabling Secure TSC, add it to
the SNP features present list.

Signed-off-by: Nikunj A Dadhania <nikunj@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Tested-by: Peter Gonda <pgonda@google.com>
Link: https://lore.kernel.org/r/20250106124633.1418972-14-nikunj@amd.com
This commit is contained in:
Nikunj A Dadhania 2025-01-06 18:16:33 +05:30 committed by Borislav Petkov (AMD)
parent 73bbf3b0fb
commit 0563ee35ae
1 changed files with 2 additions and 1 deletions
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3
arch/x86/boot/compressed/sev.c
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@ -401,7 +401,8 @@ void do_boot_stage2_vc(struct pt_regs *regs, unsigned long exit_code)
* by the guest kernel. As and when a new feature is implemented in the
* guest kernel, a corresponding bit should be added to the mask.
*/
#define SNP_FEATURES_PRESENT MSR_AMD64_SNP_DEBUG_SWAP
#define SNP_FEATURES_PRESENT (MSR_AMD64_SNP_DEBUG_SWAP | \
MSR_AMD64_SNP_SECURE_TSC)
u64 snp_get_unsupported_features(u64 status)
{