diff --git a/MdePkg/Include/Library/BaseLib.h b/MdePkg/Include/Library/BaseLib.h
index 2fae312f2f..8cc086983d 100644
--- a/MdePkg/Include/Library/BaseLib.h
+++ b/MdePkg/Include/Library/BaseLib.h
@@ -7696,6 +7696,19 @@ AsmWriteTr (
IN UINT16 Selector
);
+/**
+ Performs a serializing operation on all load-from-memory instructions that
+ were issued prior the AsmLfence function.
+
+ Executes a LFENCE instruction. This function is only available on IA-32 and x64.
+
+**/
+VOID
+EFIAPI
+AsmLfence (
+ VOID
+ );
+
/**
Patch the immediate operand of an IA32 or X64 instruction such that the byte,
word, dword or qword operand is encoded at the end of the instruction's
diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf
index def78d69e8..b84e58324c 100644
--- a/MdePkg/Library/BaseLib/BaseLib.inf
+++ b/MdePkg/Library/BaseLib/BaseLib.inf
@@ -68,6 +68,7 @@
[Sources.Ia32]
Ia32/WriteTr.nasm
+ Ia32/Lfence.nasm
Ia32/Wbinvd.c | MSFT
Ia32/WriteMm7.c | MSFT
@@ -346,6 +347,7 @@
X64/EnableCache.nasm
X64/DisableCache.nasm
X64/WriteTr.nasm
+ X64/Lfence.nasm
X64/CpuBreakpoint.c | MSFT
X64/WriteMsr64.c | MSFT
diff --git a/MdePkg/Library/BaseLib/Ia32/Lfence.nasm b/MdePkg/Library/BaseLib/Ia32/Lfence.nasm
new file mode 100644
index 0000000000..414f7d7344
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/Lfence.nasm
@@ -0,0 +1,36 @@
+;------------------------------------------------------------------------------ ;
+; Copyright (c) 2018, Intel Corporation. All rights reserved.
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Module Name:
+;
+; Lfence.nasm
+;
+; Abstract:
+;
+; Performs a serializing operation on all load-from-memory instructions that
+; were issued prior to the call of this function.
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ SECTION .text
+
+;------------------------------------------------------------------------------
+; VOID
+; EFIAPI
+; AsmLfence (
+; VOID
+; );
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmLfence)
+ASM_PFX(AsmLfence):
+ lfence
+ ret
diff --git a/MdePkg/Library/BaseLib/X64/Lfence.nasm b/MdePkg/Library/BaseLib/X64/Lfence.nasm
new file mode 100644
index 0000000000..9ee9b563e2
--- /dev/null
+++ b/MdePkg/Library/BaseLib/X64/Lfence.nasm
@@ -0,0 +1,37 @@
+;------------------------------------------------------------------------------ ;
+; Copyright (c) 2018, Intel Corporation. All rights reserved.
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Module Name:
+;
+; Lfence.nasm
+;
+; Abstract:
+;
+; Performs a serializing operation on all load-from-memory instructions that
+; were issued prior to the call of this function.
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ DEFAULT REL
+ SECTION .text
+
+;------------------------------------------------------------------------------
+; VOID
+; EFIAPI
+; AsmLfence (
+; VOID
+; );
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmLfence)
+ASM_PFX(AsmLfence):
+ lfence
+ ret