1 files changed, 5 insertions, 0 deletions
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
index 62d037cdb1..5ba0514a35 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
@@ -1239,6 +1239,10 @@ InitializeSmmCpuSemaphores (
   SemaphoreAddr += SemaphoreSize;
   mSmmCpuSemaphores.SemaphoreGlobal.CodeAccessCheckLock
                                                   = (SPIN_LOCK *)SemaphoreAddr;
+  SemaphoreAddr += SemaphoreSize;
+  mSmmCpuSemaphores.SemaphoreGlobal.MemoryMappedLock
+                                                  = (SPIN_LOCK *)SemaphoreAddr;
+
   SemaphoreAddr = (UINTN)SemaphoreBlock + GlobalSemaphoresSize;
   mSmmCpuSemaphores.SemaphoreCpu.Busy    = (SPIN_LOCK *)SemaphoreAddr;
   SemaphoreAddr += ProcessorCount * SemaphoreSize;
@@ -1254,6 +1258,7 @@ InitializeSmmCpuSemaphores (
 
   mPFLock                       = mSmmCpuSemaphores.SemaphoreGlobal.PFLock;
   mConfigSmmCodeAccessCheckLock = mSmmCpuSemaphores.SemaphoreGlobal.CodeAccessCheckLock;
+  mMemoryMappedLock             = mSmmCpuSemaphores.SemaphoreGlobal.MemoryMappedLock;
 
   mSemaphoreSize = SemaphoreSize;
 }