Add macros for SVSM_VTPM_QUERY and SVSM_VTPM_CMD calls as defined
in the "Secure VM Service Module for SEV-SNP Guests"
Publication # 58019 Revision: 1.00

Link: 
https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/specifications/58019.pdf
Signed-off-by: Stefano Garzarella <sgarz...@redhat.com>
---
 arch/x86/include/asm/sev.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/x86/include/asm/sev.h b/arch/x86/include/asm/sev.h
index 1581246491b5..f6ebf4492606 100644
--- a/arch/x86/include/asm/sev.h
+++ b/arch/x86/include/asm/sev.h
@@ -384,6 +384,10 @@ struct svsm_call {
 #define SVSM_ATTEST_SERVICES           0
 #define SVSM_ATTEST_SINGLE_SERVICE     1
 
+#define SVSM_VTPM_CALL(x)              ((2ULL << 32) | (x))
+#define SVSM_VTPM_QUERY                        0
+#define SVSM_VTPM_CMD                  1
+
 #ifdef CONFIG_AMD_MEM_ENCRYPT
 
 extern u8 snp_vmpl;
-- 
2.48.1


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