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UefiCpuPkg/PiSmmCpuDxeSmm: Remove duplicate aligned buffer on S3 path 

InitializeMpSyncData() invokes InitializeSmmCpuSemaphores() to allocate an
aligned buffer for all locks and semaphores. However, this function is
invoked on S3 resume path again to reset mSmmMpSyncData. It causes
an additional aligned buffer to be allocated.

This update moves InitializeSmmCpuSemaphores() into
InitializeMpServiceData() that is only invoked on normal boot.
InitializeMpSyncData() is updated to reset the locks/semaphore in
mSmmMpSyncData.

Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Jeff Fan 2016-06-27 15:41:50 +08:00 committed by Michael Kinney
parent 77d172b76d
commit 8b9311b795
1 changed files with 25 additions and 16 deletions
UefiCpuPkg/PiSmmCpuDxeSmm
MpService.c

41
UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
View File

@ -1205,7 +1205,6 @@ InitializeSmmCpuSemaphores (
VOID
)
{
UINTN CpuIndex;
UINTN ProcessorCount;
UINTN TotalSize;
UINTN GlobalSemaphoresSize;
@ -1240,7 +1239,6 @@ InitializeSmmCpuSemaphores (
SemaphoreAddr += SemaphoreSize;
mSmmCpuSemaphores.SemaphoreGlobal.CodeAccessCheckLock
= (SPIN_LOCK *)SemaphoreAddr;
SemaphoreAddr = (UINTN)SemaphoreBlock + GlobalSemaphoresSize;
mSmmCpuSemaphores.SemaphoreCpu.Busy = (SPIN_LOCK *)SemaphoreAddr;
SemaphoreAddr += ProcessorCount * SemaphoreSize;
@ -1254,21 +1252,9 @@ InitializeSmmCpuSemaphores (
((UINTN)SemaphoreBlock + Pages * SIZE_4KB - SemaphoreAddr) / SemaphoreSize;
ASSERT (mSmmCpuSemaphores.SemaphoreMsr.AvailableCounter >= MSR_SPIN_LOCK_INIT_NUM);
mSmmMpSyncData->Counter = mSmmCpuSemaphores.SemaphoreGlobal.Counter;
mSmmMpSyncData->InsideSmm = mSmmCpuSemaphores.SemaphoreGlobal.InsideSmm;
mSmmMpSyncData->AllCpusInSync = mSmmCpuSemaphores.SemaphoreGlobal.AllCpusInSync;
mPFLock = mSmmCpuSemaphores.SemaphoreGlobal.PFLock;
mConfigSmmCodeAccessCheckLock = mSmmCpuSemaphores.SemaphoreGlobal.CodeAccessCheckLock;
for (CpuIndex = 0; CpuIndex < ProcessorCount; CpuIndex ++) {
mSmmMpSyncData->CpuData[CpuIndex].Busy =
(SPIN_LOCK *)((UINTN)mSmmCpuSemaphores.SemaphoreCpu.Busy + SemaphoreSize * CpuIndex);
mSmmMpSyncData->CpuData[CpuIndex].Run =
(UINT32 *)((UINTN)mSmmCpuSemaphores.SemaphoreCpu.Run + SemaphoreSize * CpuIndex);
mSmmMpSyncData->CpuData[CpuIndex].Present =
(BOOLEAN *)((UINTN)mSmmCpuSemaphores.SemaphoreCpu.Present + SemaphoreSize * CpuIndex);
}
mSemaphoreSize = SemaphoreSize;
}
@ -1282,8 +1268,10 @@ InitializeMpSyncData (
VOID
)
{
UINTN CpuIndex;
if (mSmmMpSyncData != NULL) {
ZeroMem (mSmmMpSyncData, mSmmMpSyncDataSize);
mSmmMpSyncData->SwitchBsp = FALSE;
mSmmMpSyncData->CpuData = (SMM_CPU_DATA_BLOCK *)((UINT8 *)mSmmMpSyncData + sizeof (SMM_DISPATCHER_MP_SYNC_DATA));
mSmmMpSyncData->CandidateBsp = (BOOLEAN *)(mSmmMpSyncData->CpuData + gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus);
if (FeaturePcdGet (PcdCpuSmmEnableBspElection)) {
@ -1294,7 +1282,23 @@ InitializeMpSyncData (
}
mSmmMpSyncData->EffectiveSyncMode = (SMM_CPU_SYNC_MODE) PcdGet8 (PcdCpuSmmSyncMode);
InitializeSmmCpuSemaphores ();
mSmmMpSyncData->Counter = mSmmCpuSemaphores.SemaphoreGlobal.Counter;
mSmmMpSyncData->InsideSmm = mSmmCpuSemaphores.SemaphoreGlobal.InsideSmm;
mSmmMpSyncData->AllCpusInSync = mSmmCpuSemaphores.SemaphoreGlobal.AllCpusInSync;
ASSERT (mSmmMpSyncData->Counter != NULL && mSmmMpSyncData->InsideSmm != NULL &&
mSmmMpSyncData->AllCpusInSync != NULL);
*mSmmMpSyncData->Counter = 0;
*mSmmMpSyncData->InsideSmm = FALSE;
*mSmmMpSyncData->AllCpusInSync = FALSE;
for (CpuIndex = 0; CpuIndex < gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus; CpuIndex ++) {
mSmmMpSyncData->CpuData[CpuIndex].Busy =
(SPIN_LOCK *)((UINTN)mSmmCpuSemaphores.SemaphoreCpu.Busy + mSemaphoreSize * CpuIndex);
mSmmMpSyncData->CpuData[CpuIndex].Run =
(UINT32 *)((UINTN)mSmmCpuSemaphores.SemaphoreCpu.Run + mSemaphoreSize * CpuIndex);
mSmmMpSyncData->CpuData[CpuIndex].Present =
(BOOLEAN *)((UINTN)mSmmCpuSemaphores.SemaphoreCpu.Present + mSemaphoreSize * CpuIndex);
}
}
}
@ -1318,6 +1322,11 @@ InitializeMpServiceData (
UINT8 *GdtTssTables;
UINTN GdtTableStepSize;
//
// Allocate memory for all locks and semaphores
//
InitializeSmmCpuSemaphores ();
//
// Initialize mSmmMpSyncData
//