From: Jason Voelz <jason.vo...@intel.com>
Add code to set SMXE in CR4 in the SmxInitialize flow when SMX is enabled.
Signed-off-by: Jason Voelz <jason.vo...@intel.com>
Cc: Ray Ni <ray...@intel.com>
---
UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c
b/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c
index 38d3f53f56..b4474d2fab 100644
--- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c
+++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c
@@ -240,6 +240,15 @@ SmxInitialize (
Status = RETURN_UNSUPPORTED;
}
+ CPU_REGISTER_TABLE_WRITE_FIELD (
+ ProcessorNumber,
+ ControlRegister,
+ 4,
+ IA32_CR4,
+ Bits.SMXE,
+ (State) ? 1 : 0
+ )
+
CPU_REGISTER_TABLE_TEST_THEN_WRITE_FIELD (
ProcessorNumber,
Msr,
--
2.13.0.windows.1
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