From 9eaa902a52ec1ab0032d0c5a23f9d16493bcb4c5 Mon Sep 17 00:00:00 2001
From: Star Zeng <star.zeng@intel.com>
Date: Tue, 16 Jan 2018 18:56:44 +0800
Subject: [PATCH] IntelSiliconPkg IntelVTdDxe: Remove mVtdHostAddressWidthMask

mVtdHostAddressWidthMask is not been used at all,
its definition and related code could be removed.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
---
 IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h | 1 -
 IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmarAcpiTable.c | 2 --
 IntelSiliconPkg/Feature/VTd/IntelVTdDxe/VtdReg.c        | 3 +--
 3 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h
index 767531e4a9..2ec92fe523 100644
--- a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h
+++ b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h
@@ -124,7 +124,6 @@ EFI_STATUS
 
 extern EFI_ACPI_DMAR_HEADER  *mAcpiDmarTable;
 
-extern UINT64                           mVtdHostAddressWidthMask;
 extern UINTN                            mVtdUnitNumber;
 extern VTD_UNIT_INFORMATION             *mVtdUnitInformation;
 
diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmarAcpiTable.c b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmarAcpiTable.c
index 342830a01f..24ad47edc5 100644
--- a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmarAcpiTable.c
+++ b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmarAcpiTable.c
@@ -806,8 +806,6 @@ ParseDmarAcpiTableDrhd (
     return EFI_OUT_OF_RESOURCES;
   }
 
-  mVtdHostAddressWidthMask = LShiftU64 (1ull, mAcpiDmarTable->HostAddressWidth) - 1;
-
   VtdIndex = 0;
   DmarHeader = (EFI_ACPI_DMAR_STRUCTURE_HEADER *)((UINTN)(mAcpiDmarTable + 1));
   while ((UINTN)DmarHeader < (UINTN)mAcpiDmarTable + mAcpiDmarTable->Header.Length) {
diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/VtdReg.c b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/VtdReg.c
index 1404af7cd7..bc9f427a36 100644
--- a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/VtdReg.c
+++ b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/VtdReg.c
@@ -1,6 +1,6 @@
 /** @file
 
-  Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>
   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
@@ -13,7 +13,6 @@
 
 #include "DmaProtection.h"
 
-UINT64                           mVtdHostAddressWidthMask;
 UINTN                            mVtdUnitNumber;
 VTD_UNIT_INFORMATION             *mVtdUnitInformation;
 
-- 
2.39.2