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

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

diff --git a/arch/x86/boot/compressed/sev.c b/arch/x86/boot/compressed/sev.c
index cd44e120fe53777e3daff67e8a5f67bcd59fb067..bb55934c1cee7053726629e90e82b5b5b5825d21 100644 (file)
--- a/arch/x86/boot/compressed/sev.c
+++ b/arch/x86/boot/compressed/sev.c
@@ -401,7 +401,8 @@ finish:
  * 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)
 {