BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198
Under SEV-ES, a WBINVD intercept generates a #VC exception. VMGEXIT must be used to allow the hypervisor to handle this intercept. Cc: Eric Dong <[email protected]> Cc: Ray Ni <[email protected]> Cc: Laszlo Ersek <[email protected]> Signed-off-by: Tom Lendacky <[email protected]> --- .../X64/ArchAMDSevVcHandler.c | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchAMDSevVcHandler.c b/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchAMDSevVcHandler.c index 92b15dbd146e..1096403261db 100644 --- a/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchAMDSevVcHandler.c +++ b/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchAMDSevVcHandler.c @@ -591,6 +591,24 @@ MmioExit ( return Status; } +STATIC +UINT64 +WbinvdExit ( + GHCB *Ghcb, + EFI_SYSTEM_CONTEXT_X64 *Regs, + SEV_ES_INSTRUCTION_DATA *InstructionData + ) +{ + UINT64 Status; + + Status = VmgExit (Ghcb, SvmExitWbinvd, 0, 0); + if (Status) { + return Status; + } + + return 0; +} + STATIC UINT64 MsrExit ( @@ -904,6 +922,10 @@ DoVcCommon ( NaeExit = MsrExit; break; + case SvmExitWbinvd: + NaeExit = WbinvdExit; + break; + case SvmExitNpf: NaeExit = MmioExit; break; -- 2.17.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#55256): https://edk2.groups.io/g/devel/message/55256 Mute This Topic: https://groups.io/mt/71687808/21656 Group Owner: [email protected] Unsubscribe: https://edk2.groups.io/g/devel/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
