diff --git a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
index b839d3192f..3e480e1761 100644
--- a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
+++ b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
@@ -615,3 +615,44 @@ SmmCpuFeaturesWriteSaveStateRegister (
 {
   return EFI_UNSUPPORTED;
 }
+
+/**
+  This function is hook point called after the gEfiSmmReadyToLockProtocolGuid
+  notification is completely processed.
+**/
+VOID
+EFIAPI
+SmmCpuFeaturesCompleteSmmReadyToLock (
+  VOID
+  )
+{
+}
+
+/**
+  This API provides a method for a CPU to allocate a specific region for storing page tables.
+
+  This API can be called more once to allocate memory for page tables.
+
+  Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the
+  allocated buffer.  The buffer returned is aligned on a 4KB boundary.  If Pages is 0, then NULL
+  is returned.  If there is not enough memory remaining to satisfy the request, then NULL is
+  returned.
+
+  This function can also return NULL if there is no preference on where the page tables are allocated in SMRAM.
+
+  @param  Pages                 The number of 4 KB pages to allocate.
+
+  @return A pointer to the allocated buffer for page tables.
+  @retval NULL      Fail to allocate a specific region for storing page tables,
+                    Or there is no preference on where the page tables are allocated in SMRAM.
+
+**/
+VOID *
+EFIAPI
+SmmCpuFeaturesAllocatePageTableMemory (
+  IN UINTN           Pages
+  )
+{
+  return NULL;
+}
+