diff options
Diffstat (limited to 'UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c')
| -rwxr-xr-x | UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c index c5b67e3dc0..a3fd796dba 100755 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c @@ -125,6 +125,11 @@ UINTN mSmmCpuSmramRangeCount; UINT8 mPhysicalAddressBits;
+//
+// Control register contents saved for SMM S3 resume state initialization.
+//
+UINT32 mSmmCr4;
+
/**
Initialize IDT to setup exception handlers for SMM.
@@ -407,7 +412,8 @@ SmmRelocateBases ( //
gSmmCr0 = (UINT32)AsmReadCr0 ();
PatchInstructionX86 (gPatchSmmCr3, AsmReadCr3 (), 4);
- gSmmCr4 = (UINT32)AsmReadCr4 ();
+ mSmmCr4 = (UINT32)AsmReadCr4 ();
+ PatchInstructionX86 (gPatchSmmCr4, mSmmCr4, 4);
//
// Patch GDTR for SMM base relocation
|