Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.f...@cn.fujitsu.com>
---
UefiCpuPkg/CpuDxe/CpuMp.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/UefiCpuPkg/CpuDxe/CpuMp.c b/UefiCpuPkg/CpuDxe/CpuMp.c
index 94b72b7..453dc47 100644
--- a/UefiCpuPkg/CpuDxe/CpuMp.c
+++ b/UefiCpuPkg/CpuDxe/CpuMp.c
@@ -22,6 +22,7 @@ UINTN gPollInterval = 100; // 100 microseconds
MP_SYSTEM_DATA mMpSystemData;
EFI_HANDLE mMpServiceHandle = NULL;
EFI_EVENT mExitBootServicesEvent = (EFI_EVENT)NULL;
+IA32_DESCRIPTOR mIdtr;
VOID *mCommonStack = 0;
VOID *mTopOfApCommonStack = 0;
@@ -1353,6 +1354,11 @@ ApEntryPointInC (
VOID* TopOfApStack;
UINTN ProcessorNumber;
+ //
+ // APs use the same Interrupt Descriptor Table with BSP.
+ //
+ AsmWriteIdtr (&mIdtr);
+
if (!mAPsAlreadyInitFinished) {
FillInProcessorInformation (FALSE, mMpSystemData.NumberOfProcessors);
TopOfApStack = (UINT8*)mApStackStart + gApStackSize;
@@ -1533,6 +1539,8 @@ InitializeMpSupport (
return;
}
+ AsmReadIdtr (&mIdtr);
+
gApStackSize = (UINTN) PcdGet32 (PcdCpuApStackSize);
ASSERT ((gApStackSize & (SIZE_4KB - 1)) == 0);
--
1.9.3
------------------------------------------------------------------------------
Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/
_______________________________________________
edk2-devel mailing list
edk2-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/edk2-devel
