[PATCH 2/3] x86/sev: add SVSM call macros for the vTPM protocol

Stefano Garzarella
2024-12-10T14:34:50Z

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 <sgarzare@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 91f08af31078..97dcc8d938a6 100644
--- a/arch/x86/include/asm/sev.h
+++ b/arch/x86/include/asm/sev.h
@@ -365,6 +365,10 @@ 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;
--
2.47.1