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UefiCpuPkg/MpInitLib: Fix a bug that AP enters timer INT handler 

When SourceLevelDebug is enabled, AP randomly executes the DXECORE
timer handler logic. The root cause is the interrupts are not
masked in AP wake up procedure.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Jeff Fan <vanjeff_919@hotmail.com>
This commit is contained in:
Ruiyu Ni 2018-01-05 17:08:13 +08:00
parent 5f354f6a4a
commit a2ea6894e6
1 changed files with 5 additions and 1 deletions
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6
UefiCpuPkg/Library/MpInitLib/MpLib.c
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@ -1,7 +1,7 @@
/** @file
CPU MP Initialize Library common functions.
Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -582,6 +582,10 @@ ApWakeupFunction (
// We need to re-initialize them at here
//
ProgramVirtualWireMode ();
//
// Mask the LINT0 and LINT1 so that AP doesn't enter the system timer interrupt handler.
//
DisableLvtInterrupts ();
SyncLocalApicTimerSetting (CpuMpData);
CurrentApicMode = GetApicMode ();