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CpuException: Avoid allocating page but using global variables 

Signed-off-by: Ray Ni <ray.ni@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
This commit is contained in:
Ray Ni 2022-05-18 14:45:37 +08:00 committed by mergify[bot]
parent 34d505123e
commit 2fbc5ff0a5
1 changed files with 4 additions and 18 deletions
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22
UefiCpuPkg/Library/CpuExceptionHandlerLib/DxeException.c
View File

@ -14,8 +14,8 @@
CONST UINTN mDoFarReturnFlag = 0;
RESERVED_VECTORS_DATA mReservedVectorsData[CPU_EXCEPTION_NUM];
EFI_CPU_INTERRUPT_HANDLER mExternalInterruptHandlerTable[CPU_EXCEPTION_NUM];
RESERVED_VECTORS_DATA mReservedVectorsData[CPU_INTERRUPT_NUM];
EFI_CPU_INTERRUPT_HANDLER mExternalInterruptHandlerTable[CPU_INTERRUPT_NUM];
EXCEPTION_HANDLER_DATA mExceptionHandlerData = {
0, // To be fixed
0, // To be fixed
@ -96,27 +96,15 @@ InitializeCpuInterruptHandlers (
IA32_DESCRIPTOR IdtDescriptor;
UINTN IdtEntryCount;
EXCEPTION_HANDLER_TEMPLATE_MAP TemplateMap;
RESERVED_VECTORS_DATA *ReservedVectors;
EFI_CPU_INTERRUPT_HANDLER *ExternalInterruptHandler;
Status = gBS->AllocatePool (
EfiBootServicesCode,
sizeof (RESERVED_VECTORS_DATA) * CPU_INTERRUPT_NUM,
(VOID **)&ReservedVectors
);
ASSERT (!EFI_ERROR (Status) && ReservedVectors != NULL);
SetMem ((VOID *)ReservedVectors, sizeof (RESERVED_VECTORS_DATA) * CPU_INTERRUPT_NUM, 0xff);
SetMem ((VOID *)mReservedVectorsData, sizeof (RESERVED_VECTORS_DATA) * CPU_INTERRUPT_NUM, 0xff);
if (VectorInfo != NULL) {
Status = ReadAndVerifyVectorInfo (VectorInfo, ReservedVectors, CPU_INTERRUPT_NUM);
Status = ReadAndVerifyVectorInfo (VectorInfo, mReservedVectorsData, CPU_INTERRUPT_NUM);
if (EFI_ERROR (Status)) {
FreePool (ReservedVectors);
return EFI_INVALID_PARAMETER;
}
}
ExternalInterruptHandler = AllocateZeroPool (sizeof (EFI_CPU_INTERRUPT_HANDLER) * CPU_INTERRUPT_NUM);
ASSERT (ExternalInterruptHandler != NULL);
//
// Read IDT descriptor and calculate IDT size
//
@ -137,8 +125,6 @@ InitializeCpuInterruptHandlers (
ASSERT (TemplateMap.ExceptionStubHeaderSize <= HOOKAFTER_STUB_SIZE);
mExceptionHandlerData.IdtEntryCount = CPU_INTERRUPT_NUM;
mExceptionHandlerData.ReservedVectors = ReservedVectors;
mExceptionHandlerData.ExternalInterruptHandler = ExternalInterruptHandler;
InitializeSpinLock (&mExceptionHandlerData.DisplayMessageSpinLock);
UpdateIdtTable (IdtTable, &TemplateMap, &mExceptionHandlerData);