commit af8ba51aca4e0b41a359fe467fb5c5b9baa75a05
author Jeff Fan <jeff.fan@intel.com> Mon Dec 26 19:16:23 2016 +0800
committer Jeff Fan <jeff.fan@intel.com> Wed Dec 28 15:38:26 2016 +0800
tree eaed9f6d7f800eaede206fe9e853f55f5a42450f
parent b6e45716c3ebccba9c576b1c39502dfa8e62c9df

UefiCpuPkg/MpInitLib: Set new AP to idle state after switching BSP

We need to set new AP to idle state if it is expected to be waken up by new BSP
later.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Kinney Michael D <michael.d.kinney@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>

UefiCpuPkg/Library/MpInitLib/MpLib.c

diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c
index 77d855a..78d18b6 100644
--- a/UefiCpuPkg/Library/MpInitLib/MpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c
@@ -1608,6 +1608,8 @@
   //

   if (!EnableOldBSP) {

     SetApState (&CpuMpData->CpuData[CallerNumber], CpuStateDisabled);

+  } else {

+    SetApState (&CpuMpData->CpuData[CallerNumber], CpuStateIdle);

   }

   //

   // Save new BSP number