diff --git a/MdePkg/Include/Register/Amd/Fam17Msr.h b/MdePkg/Include/Register/Amd/Fam17Msr.h
index 7368ce7af0..cdb8f588cc 100644
--- a/MdePkg/Include/Register/Amd/Fam17Msr.h
+++ b/MdePkg/Include/Register/Amd/Fam17Msr.h
@@ -48,6 +48,11 @@ typedef union {
     UINT32  Reserved2:32;
   } GhcbTerminate;
 
+  struct {
+    UINT64  Function:12;
+    UINT64  Features:52;
+  } GhcbHypervisorFeatures;
+
   VOID    *Ghcb;
 
   UINT64  GhcbPhysicalAddress;
@@ -57,6 +62,8 @@ typedef union {
 #define GHCB_INFO_SEV_INFO_GET                      2
 #define GHCB_INFO_CPUID_REQUEST                     4
 #define GHCB_INFO_CPUID_RESPONSE                    5
+#define GHCB_HYPERVISOR_FEATURES_REQUEST            128
+#define GHCB_HYPERVISOR_FEATURES_RESPONSE           129
 #define GHCB_INFO_TERMINATE_REQUEST                 256
 
 #define GHCB_TERMINATE_GHCB                0
diff --git a/MdePkg/Include/Register/Amd/Ghcb.h b/MdePkg/Include/Register/Amd/Ghcb.h
index 712dc8e769..ec232ebd38 100644
--- a/MdePkg/Include/Register/Amd/Ghcb.h
+++ b/MdePkg/Include/Register/Amd/Ghcb.h
@@ -54,6 +54,7 @@
 #define SVM_EXIT_NMI_COMPLETE                   0x80000003ULL
 #define SVM_EXIT_AP_RESET_HOLD                  0x80000004ULL
 #define SVM_EXIT_AP_JUMP_TABLE                  0x80000005ULL
+#define SVM_EXIT_HYPERVISOR_FEATURES            0x8000FFFDULL
 #define SVM_EXIT_UNSUPPORTED                    0x8000FFFFULL
 
 //
@@ -154,4 +155,11 @@ typedef union {
 #define GHCB_EVENT_INJECTION_TYPE_EXCEPTION  3
 #define GHCB_EVENT_INJECTION_TYPE_SOFT_INT   4
 
+//
+// Hypervisor features
+//
+#define GHCB_HV_FEATURES_SNP                              BIT0
+#define GHCB_HV_FEATURES_SNP_AP_CREATE                    (GHCB_HV_FEATURES_SNP | BIT1)
+#define GHCB_HV_FEATURES_SNP_RESTRICTED_INJECTION         (GHCB_HV_FEATURES_SNP_AP_CREATE | BIT2)
+#define GHCB_HV_FEATURES_SNP_RESTRICTED_INJECTION_TIMER   (GHCB_HV_FEATURES_SNP_RESTRICTED_INJECTION | BIT3)
 #endif