2 files changed, 15 insertions, 11 deletions
diff --git a/MdePkg/Include/Pi/PiDxeCis.h b/MdePkg/Include/Pi/PiDxeCis.h
index 9ed4da661a..75f1736410 100644
--- a/MdePkg/Include/Pi/PiDxeCis.h
+++ b/MdePkg/Include/Pi/PiDxeCis.h
@@ -695,4 +695,19 @@ typedef struct {
 
 typedef DXE_SERVICES EFI_DXE_SERVICES;
 
+
+/**
+  Function prototype for invoking a function on an Application Processor.
+
+  This definition is used by the UEFI MP Serices Protocol, and the
+  PI SMM System Table.
+
+  @param[in,out] Buffer  Pointer to private data buffer.
+**/
+typedef
+VOID
+(EFIAPI *EFI_AP_PROCEDURE)(
+  IN OUT VOID  *Buffer
+  );
+
 #endif
diff --git a/MdePkg/Include/Pi/PiSmmCis.h b/MdePkg/Include/Pi/PiSmmCis.h
index 77556be0fe..52eaea560d 100644
--- a/MdePkg/Include/Pi/PiSmmCis.h
+++ b/MdePkg/Include/Pi/PiSmmCis.h
@@ -68,17 +68,6 @@ EFI_STATUS
   );
 
 /**
-  Function prototype for invoking a function on an Application Processor.
-
-  @param[in,out] Buffer  Pointer to private data buffer.
-**/
-typedef
-VOID
-(EFIAPI *EFI_AP_PROCEDURE)(
-  IN OUT VOID  *Buffer
-  );
-
-/**
   The SmmStartupThisAp() lets the caller to get one distinct application processor
   (AP) in the enabled processor pool to execute a caller-provided code stream
   while in SMM. It runs the given code on this processor and reports the status.