commit 9c3d2f9a2985d97961b07ddc493b6e406ace8814
author Jeff Fan <jeff.fan@intel.com> Mon Jul 11 19:46:36 2016 +0800
committer Jeff Fan <jeff.fan@intel.com> Thu Jul 14 09:44:00 2016 +0800
tree e3586818c29f8962cf957b38116fa8e152f30582
parent d1471c011277829cf04a3078fa1931c104c22afa

UefiCpuPkg/CpuMpPei: Do not load new GDT table

Do not load the new GDT table and just to use the exiting BSP's GDT table set up
by SEC phase.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Giri Mudusuru <giri.p.mudusuru@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Giri P Mudusuru <giri.p.mudusuru@intel.com>

UefiCpuPkg/CpuMpPei/CpuMpPei.c

diff --git a/UefiCpuPkg/CpuMpPei/CpuMpPei.c b/UefiCpuPkg/CpuMpPei/CpuMpPei.c
index 9b602a1..5a1a648 100644
--- a/UefiCpuPkg/CpuMpPei/CpuMpPei.c
+++ b/UefiCpuPkg/CpuMpPei/CpuMpPei.c
@@ -464,7 +464,7 @@
   //

   // Get the BSP's data of GDT and IDT

   //

-  CopyMem ((VOID *)&ExchangeInfo->GdtrProfile, &mGdt, sizeof(mGdt));

+  AsmReadGdtr ((IA32_DESCRIPTOR *) &ExchangeInfo->GdtrProfile);

   AsmReadIdtr ((IA32_DESCRIPTOR *) &ExchangeInfo->IdtrProfile);

 

   if (PeiCpuMpData->ApLoopMode == ApInMwaitLoop) {

@@ -860,10 +860,6 @@
   EFI_PEI_VECTOR_HANDOFF_INFO_PPI *VectorHandoffInfoPpi;

 

   //

-  // Load new GDT table on BSP

-  //

-  AsmInitializeGdt (&mGdt);

-  //

   // Get Vector Hand-off Info PPI

   //

   VectorInfo = NULL;