sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
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>
(cherry picked from commit a2ea6894e6)
This commit is contained in:
Ruiyu Ni
2018-01-05 17:08:13 +08:00
parent 5ef439ae08
commit 20c436f729
1 changed files with 5 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
UefiCpuPkg/Library/MpInitLib/MpLib.c
View File

@@ -1,7 +1,7 @@
/** @file /** @file
CPU MP Initialize Library common functions. 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 This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License 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 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 // We need to re-initialize them at here
// //
ProgramVirtualWireMode (); ProgramVirtualWireMode ();
//
// Mask the LINT0 and LINT1 so that AP doesn't enter the system timer interrupt handler.
//
DisableLvtInterrupts ();
SyncLocalApicTimerSetting (CpuMpData); SyncLocalApicTimerSetting (CpuMpData);
CurrentApicMode = GetApicMode (); CurrentApicMode = GetApicMode ();