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-rw-r--r--UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
index 8364b73242..8c61d68afd 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
@@ -29,8 +29,6 @@ MM_COMPLETION mSmmStartupThisApToken;
//
UINT32 *mPackageFirstThreadIndex = NULL;
-extern UINTN mSmmShadowStackSize;
-
/**
Performs an atomic compare exchange operation to get semaphore.
The compare exchange operation must be performed using