return VmgExit (Ghcb, SVM_EXIT_WBINVD, 0, 0);\r
}\r
\r
+/**\r
+ Handle a RDTSCP event.\r
+\r
+ Use the VMGEXIT instruction to handle a RDTSCP event.\r
+\r
+ @param[in, out] Ghcb Pointer to the Guest-Hypervisor Communication\r
+ Block\r
+ @param[in, out] Regs x64 processor context\r
+ @param[in] InstructionData Instruction parsing context\r
+\r
+ @retval 0 Event handled successfully\r
+ @return New exception value to propagate\r
+\r
+**/\r
+STATIC\r
+UINT64\r
+RdtscpExit (\r
+ IN OUT GHCB *Ghcb,\r
+ IN OUT EFI_SYSTEM_CONTEXT_X64 *Regs,\r
+ IN SEV_ES_INSTRUCTION_DATA *InstructionData\r
+ )\r
+{\r
+ UINT64 Status;\r
+\r
+ DecodeModRm (Regs, InstructionData);\r
+\r
+ Status = VmgExit (Ghcb, SVM_EXIT_RDTSCP, 0, 0);\r
+ if (Status != 0) {\r
+ return Status;\r
+ }\r
+\r
+ if (!GhcbIsRegValid (Ghcb, GhcbRax) ||\r
+ !GhcbIsRegValid (Ghcb, GhcbRcx) ||\r
+ !GhcbIsRegValid (Ghcb, GhcbRdx)) {\r
+ return UnsupportedExit (Ghcb, Regs, InstructionData);\r
+ }\r
+ Regs->Rax = Ghcb->SaveArea.Rax;\r
+ Regs->Rcx = Ghcb->SaveArea.Rcx;\r
+ Regs->Rdx = Ghcb->SaveArea.Rdx;\r
+\r
+ return 0;\r
+}\r
+\r
/**\r
Handle a VMMCALL event.\r
\r
NaeExit = VmmCallExit;\r
break;\r
\r
+ case SVM_EXIT_RDTSCP:\r
+ NaeExit = RdtscpExit;\r
+ break;\r
+\r
case SVM_EXIT_WBINVD:\r
NaeExit = WbinvdExit;\r
break;\r