diff --git a/MdePkg/Include/AArch64/ProcessorBind.h b/MdePkg/Include/AArch64/ProcessorBind.h
index f100d96be0..775e7498c5 100644
--- a/MdePkg/Include/AArch64/ProcessorBind.h
+++ b/MdePkg/Include/AArch64/ProcessorBind.h
@@ -104,6 +104,12 @@ typedef INT64   INTN;
 ///
 #define CPU_STACK_ALIGNMENT  16
 
+///
+/// Page allocation granularity for AARCH64
+///
+#define DEFAULT_PAGE_ALLOCATION_GRANULARITY   (0x1000)
+#define RUNTIME_PAGE_ALLOCATION_GRANULARITY   (0x10000)
+
 //
 // Modifier to ensure that all protocol member functions and EFI intrinsics
 // use the correct C calling convention. All protocol member functions and
diff --git a/MdePkg/Include/Arm/ProcessorBind.h b/MdePkg/Include/Arm/ProcessorBind.h
index a543687e57..dde1fd1152 100644
--- a/MdePkg/Include/Arm/ProcessorBind.h
+++ b/MdePkg/Include/Arm/ProcessorBind.h
@@ -110,6 +110,12 @@ typedef INT32   INTN;
 ///
 #define CPU_STACK_ALIGNMENT  sizeof(UINT64)
 
+///
+/// Page allocation granularity for ARM
+///
+#define DEFAULT_PAGE_ALLOCATION_GRANULARITY   (0x1000)
+#define RUNTIME_PAGE_ALLOCATION_GRANULARITY   (0x1000)
+
 //
 // Modifier to ensure that all protocol member functions and EFI intrinsics
 // use the correct C calling convention. All protocol member functions and
diff --git a/MdePkg/Include/Ebc/ProcessorBind.h b/MdePkg/Include/Ebc/ProcessorBind.h
index 075f768c76..da8b1a6d80 100644
--- a/MdePkg/Include/Ebc/ProcessorBind.h
+++ b/MdePkg/Include/Ebc/ProcessorBind.h
@@ -114,6 +114,12 @@ typedef unsigned long         UINTN;
 ///
 #define CPU_STACK_ALIGNMENT   sizeof(UINTN)
 
+///
+/// Page allocation granularity for EBC
+///
+#define DEFAULT_PAGE_ALLOCATION_GRANULARITY   (0x1000)
+#define RUNTIME_PAGE_ALLOCATION_GRANULARITY   (0x1000)
+
 ///
 /// Modifier to ensure that all protocol member functions and EFI intrinsics
 /// use the correct C calling convention. All protocol member functions and
diff --git a/MdePkg/Include/Ia32/ProcessorBind.h b/MdePkg/Include/Ia32/ProcessorBind.h
index 086b1ff7b1..8ba2348261 100644
--- a/MdePkg/Include/Ia32/ProcessorBind.h
+++ b/MdePkg/Include/Ia32/ProcessorBind.h
@@ -257,6 +257,12 @@ typedef INT32   INTN;
 ///
 #define CPU_STACK_ALIGNMENT   sizeof(UINTN)
 
+///
+/// Page allocation granularity for IA-32.
+///
+#define DEFAULT_PAGE_ALLOCATION_GRANULARITY   (0x1000)
+#define RUNTIME_PAGE_ALLOCATION_GRANULARITY   (0x1000)
+
 //
 // Modifier to ensure that all protocol member functions and EFI intrinsics
 // use the correct C calling convention. All protocol member functions and
diff --git a/MdePkg/Include/Ipf/ProcessorBind.h b/MdePkg/Include/Ipf/ProcessorBind.h
index c19e47d8f3..51885ca613 100644
--- a/MdePkg/Include/Ipf/ProcessorBind.h
+++ b/MdePkg/Include/Ipf/ProcessorBind.h
@@ -248,6 +248,12 @@ typedef INT64   INTN;
 ///
 #define CPU_STACK_ALIGNMENT   16
 
+///
+/// Page allocation granularity for Itanium
+///
+#define DEFAULT_PAGE_ALLOCATION_GRANULARITY   (0x1000)
+#define RUNTIME_PAGE_ALLOCATION_GRANULARITY   (0x2000)
+
 //
 // Modifier to ensure that all protocol member functions and EFI intrinsics
 // use the correct C calling convention. All protocol member functions and
diff --git a/MdePkg/Include/X64/ProcessorBind.h b/MdePkg/Include/X64/ProcessorBind.h
index 23e6e55abf..72cc85151c 100644
--- a/MdePkg/Include/X64/ProcessorBind.h
+++ b/MdePkg/Include/X64/ProcessorBind.h
@@ -271,6 +271,12 @@ typedef INT64   INTN;
 ///
 #define CPU_STACK_ALIGNMENT   16
 
+///
+/// Page allocation granularity for x64
+///
+#define DEFAULT_PAGE_ALLOCATION_GRANULARITY   (0x1000)
+#define RUNTIME_PAGE_ALLOCATION_GRANULARITY   (0x1000)
+
 //
 // Modifier to ensure that all protocol member functions and EFI intrinsics
 // use the correct C calling convention. All protocol member functions and