UefiCpuPkg/PiSmmCpuDxeSmm: Check ProcessorId == INVALID_APIC_ID

If PcdCpuHotPlugSupport is TRUE, gSmst->NumberOfCpus will be the
PcdCpuMaxLogicalProcessorNumber. If gSmst->SmmStartupThisAp() is invoked for
those un-existed processors, ASSERT() happened in ConfigSmmCodeAccessCheck().

This fix is to check if ProcessorId is valid before invoke
gSmst->SmmStartupThisAp() in ConfigSmmCodeAccessCheck() and to check if
ProcessorId is valid in InternalSmmStartupThisAp() to avoid unexpected DEBUG
error message displayed.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
index e03f1e02c015e2fb872c2f83140abf6cffbb0c51..4ac5e8e26462b146919047a61c6767e3e377585e 100644 (file)
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
@@ -860,6 +860,9 @@ InternalSmmStartupThisAp (
     DEBUG((DEBUG_ERROR, "CpuIndex(%d) == gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu\n", CpuIndex));\r
     return EFI_INVALID_PARAMETER;\r
   }\r
+  if (gSmmCpuPrivate->ProcessorInfo[CpuIndex].ProcessorId == INVALID_APIC_ID) {\r
+    return EFI_INVALID_PARAMETER;\r
+  }\r
   if (!(*(mSmmMpSyncData->CpuData[CpuIndex].Present))) {\r
     if (mSmmMpSyncData->EffectiveSyncMode == SmmCpuSyncModeTradition) {\r
       DEBUG((DEBUG_ERROR, "!mSmmMpSyncData->CpuData[%d].Present\n", CpuIndex));\r

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
index 2d6b572b4e3f3b482cf5218c4eee72e1d477760e..8e7964271125d6bfe898f2655e19a8fa1a3b570a 100755 (executable)
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
@@ -1117,7 +1117,12 @@ ConfigSmmCodeAccessCheck (
   //\r
   for (Index = 0; Index < gSmst->NumberOfCpus; Index++) {\r
     if (Index != gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu) {\r
-\r
+      if (gSmmCpuPrivate->ProcessorInfo[Index].ProcessorId == INVALID_APIC_ID) {\r
+        //\r
+        // If this processor does not exist\r
+        //\r
+        continue;\r
+      }\r
       //\r
       // Acquire Config SMM Code Access Check spin lock.  The AP will release the\r
       // spin lock when it is done executing ConfigSmmCodeAccessCheckOnCurrentProcessor().\r