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UefiCpuPkg/MpSerivce: add volatile qualifiers 

For avoid the compiler optimizing the code, we let Parameter and Procedure in CpuData volatile.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17024 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Chen Fan 2015-03-09 06:45:26 +00:00 committed by vanjeff
parent 68f0674237
commit 33f413f0d6
2 changed files with 4 additions and 4 deletions
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4
UefiCpuPkg/CpuDxe/CpuMp.c
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@ -1193,7 +1193,7 @@ ProcessorToIdleState (
UINTN ProcessorNumber; UINTN ProcessorNumber;
CPU_DATA_BLOCK *CpuData; CPU_DATA_BLOCK *CpuData;
EFI_AP_PROCEDURE Procedure; EFI_AP_PROCEDURE Procedure;
VOID *ProcedureArgument; volatile VOID *ProcedureArgument;
AsmApDoneWithCommonStack (); AsmApDoneWithCommonStack ();
@ -1231,7 +1231,7 @@ ProcessorToIdleState (
if (Procedure != NULL) { if (Procedure != NULL) {
SetApState (CpuData, CpuStateBusy); SetApState (CpuData, CpuStateBusy);
Procedure (ProcedureArgument); Procedure ((VOID*) ProcedureArgument);
GetMpSpinLock (CpuData); GetMpSpinLock (CpuData);
CpuData->Procedure = NULL; CpuData->Procedure = NULL;

4
UefiCpuPkg/CpuDxe/CpuMp.h
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@ -94,8 +94,8 @@ typedef struct {
INTN LockSelf; INTN LockSelf;
volatile CPU_STATE State; volatile CPU_STATE State;
EFI_AP_PROCEDURE Procedure; volatile EFI_AP_PROCEDURE Procedure;
VOID *Parameter; volatile VOID* Parameter;
BOOLEAN *Finished; BOOLEAN *Finished;
INTN Timeout; INTN Timeout;
EFI_EVENT WaitEvent; EFI_EVENT WaitEvent;