[edk2-devel] [PATCH v4 17/40] UefiCpuPkg/CpuExceptionHandler: Add support for INVD NAE events
Lendacky, Thomas
thomas.lendacky at amd.com
Tue Feb 4 23:01:21 UTC 2020
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198
Under SEV-ES, a INVD intercept generates a #VC exception. VMGEXIT must be
used to allow the hypervisor to handle this intercept.
Cc: Eric Dong <eric.dong at intel.com>
Cc: Ray Ni <ray.ni at intel.com>
Cc: Laszlo Ersek <lersek at redhat.com>
Signed-off-by: Tom Lendacky <thomas.lendacky at amd.com>
---
.../X64/AMDSevVcCommon.c | 22 +++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/AMDSevVcCommon.c b/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/AMDSevVcCommon.c
index c2bc213e602c..a47bba5ac1c1 100644
--- a/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/AMDSevVcCommon.c
+++ b/UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/AMDSevVcCommon.c
@@ -856,6 +856,24 @@ IoioExit (
return 0;
}
+STATIC
+UINT64
+InvdExit (
+ GHCB *Ghcb,
+ EFI_SYSTEM_CONTEXT_X64 *Regs,
+ SEV_ES_INSTRUCTION_DATA *InstructionData
+ )
+{
+ UINT64 Status;
+
+ Status = VmgExit (Ghcb, SvmExitInvd, 0, 0);
+ if (Status) {
+ return Status;
+ }
+
+ return 0;
+}
+
STATIC
UINT64
CpuidExit (
@@ -975,6 +993,10 @@ DoVcCommon (
NaeExit = CpuidExit;
break;
+ case SvmExitInvd:
+ NaeExit = InvdExit;
+ break;
+
case SvmExitIoioProt:
NaeExit = IoioExit;
break;
--
2.17.1
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