diff options
| author | Jeff Fan <jeff.fan@intel.com> | 2016-06-27 15:41:50 +0800 |
|---|---|---|
| committer | Hao Wu <hao.a.wu@intel.com> | 2016-07-21 15:11:33 +0800 |
| commit | f6879b66b55eb454e4ec9eb26907a2a627cad64b (patch) | |
| tree | 1df4fe7810e341a690976a079f8b54494824e013 /UefiCpuPkg/PiSmmCpuDxeSmm | |
| parent | df6bfe5beaa451a48fdcc86b13e55afe950b7b10 (diff) | |
| download | edk2-platforms-f6879b66b55eb454e4ec9eb26907a2a627cad64b.tar.xz | |
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>
(cherry picked from commit 8b9311b79557311e137d0ffdc7934fea3966b0d7)
Diffstat (limited to 'UefiCpuPkg/PiSmmCpuDxeSmm')
| -rw-r--r-- | UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c | 41 |
1 files changed, 25 insertions, 16 deletions
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c index 3ea4b6b91d..8970c789a6 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c @@ -1200,7 +1200,6 @@ InitializeSmmCpuSemaphores ( VOID
)
{
- UINTN CpuIndex;
UINTN ProcessorCount;
UINTN TotalSize;
UINTN GlobalSemaphoresSize;
@@ -1235,7 +1234,6 @@ InitializeSmmCpuSemaphores ( SemaphoreAddr += SemaphoreSize;
mSmmCpuSemaphores.SemaphoreGlobal.CodeAccessCheckLock
= (SPIN_LOCK *)SemaphoreAddr;
-
SemaphoreAddr = (UINTN)SemaphoreBlock + GlobalSemaphoresSize;
mSmmCpuSemaphores.SemaphoreCpu.Busy = (SPIN_LOCK *)SemaphoreAddr;
SemaphoreAddr += ProcessorCount * SemaphoreSize;
@@ -1249,21 +1247,9 @@ 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;
}
@@ -1277,8 +1263,10 @@ 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)) {
@@ -1289,7 +1277,23 @@ 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);
+ }
}
}
@@ -1314,6 +1318,11 @@ InitializeMpServiceData ( UINTN GdtTableStepSize;
//
+ // Allocate memory for all locks and semaphores
+ //
+ InitializeSmmCpuSemaphores ();
+
+ //
// Initialize mSmmMpSyncData
//
mSmmMpSyncDataSize = sizeof (SMM_DISPATCHER_MP_SYNC_DATA) +
|