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-rw-r--r--UefiCpuPkg/Library/MpInitLib/MpLib.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c
index 3337488892..6f51bc4ebf 100644
--- a/UefiCpuPkg/Library/MpInitLib/MpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c
@@ -1,7 +1,7 @@
/** @file
CPU MP Initialize Library common functions.
- Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2016 - 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -619,6 +619,8 @@ ApWakeupFunction (
RestoreVolatileRegisters (&CpuMpData->CpuData[0].VolatileRegisters, FALSE);
InitializeApData (CpuMpData, ProcessorNumber, BistData, ApTopOfStack);
ApStartupSignalBuffer = CpuMpData->CpuData[ProcessorNumber].StartupApSignal;
+
+ InterlockedDecrement ((UINT32 *) &CpuMpData->MpCpuExchangeInfo->NumApsExecuting);
} else {
//
// Execute AP function if AP is ready
@@ -698,7 +700,6 @@ ApWakeupFunction (
// AP finished executing C code
//
InterlockedIncrement ((UINT32 *) &CpuMpData->FinishedCount);
- InterlockedDecrement ((UINT32 *) &CpuMpData->MpCpuExchangeInfo->NumApsExecuting);
//
// Place AP is specified loop mode