X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=UefiCpuPkg%2FLibrary%2FCpuCommonFeaturesLib%2FPendingBreak.c;h=2e0d2bdeca9d95623c1fa9b49dc6ac5f8c83610b;hp=8cafba4f4a87991206605c96d23b821bd5aa43d7;hb=d28daaddb3e732468e930a809d3d3943a5de9558;hpb=38381e18bf08dadad91627949996d106612f4753

diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/PendingBreak.c b/UefiCpuPkg/Library/CpuCommonFeaturesLib/PendingBreak.c
index 8cafba4f4a..2e0d2bdeca 100644
--- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/PendingBreak.c
+++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/PendingBreak.c
@@ -74,6 +74,17 @@ PendingBreakInitialize (
   IN BOOLEAN                           State
   )
 {
+  //
+  // The scope of the MSR_ATOM_IA32_MISC_ENABLE is core for below processor type, only program
+  // MSR_ATOM_IA32_MISC_ENABLE for thread 0 in each core.
+  //
+  // Support function has check the processer type for this feature, no need to check again
+  // here.
+  //
+  if (CpuInfo->ProcessorInfo.Location.Thread != 0) {
+    return RETURN_SUCCESS;
+  }
+
   //
   // ATOM, CORE2, CORE, PENTIUM_4 and IS_PENTIUM_M_PROCESSOR have the same MSR index,
   // Simply use MSR_ATOM_IA32_MISC_ENABLE here