UefiCpuPkg/CpuCommonFeaturesLib: Register MSR base on scope Info.

[mirror_edk2.git] / UefiCpuPkg / Library / CpuCommonFeaturesLib / ExecuteDisable.c

diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/ExecuteDisable.c b/UefiCpuPkg/Library/CpuCommonFeaturesLib/ExecuteDisable.c
index 921656a1e86989e27117e3db01c7a49c18138cd2..ff06cb9b6099d3174060e3e2811a6a7331d5fa97 100644 (file)
--- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/ExecuteDisable.c
+++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/ExecuteDisable.c
@@ -79,6 +79,16 @@ ExecuteDisableInitialize (
   IN BOOLEAN                           State\r
   )\r
 {\r
+  //\r
+  // The scope of the MSR_IA32_EFER is core for below processor type, only program\r
+  // MSR_IA32_EFER for thread 0 in each core.\r
+  //\r
+  if (IS_SILVERMONT_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel)) {\r
+    if (CpuInfo->ProcessorInfo.Location.Thread != 0) {\r
+      return RETURN_SUCCESS;\r
+    }\r
+  }\r
+\r
   CPU_REGISTER_TABLE_WRITE_FIELD (\r
     ProcessorNumber,\r
     Msr,\r