From da3dad181e17b8c3d5c7c1ee8f33ebabf0086d6f Mon Sep 17 00:00:00 2001 From: Dun Tan Date: Fri, 3 Mar 2023 15:39:41 +0800 Subject: UefiCpuPkg/CpuPageTableLib: Remove unneeded 'if' condition Remove unneeded 'if' condition in CpuPageTableLib code. The deleted code is in the code branch for present non-leaf parent entry. So the 'if' check for (ParentPagingEntry->Pnle.Bits.Present == 0) is always FALSE. Signed-off-by: Dun Tan Cc: Eric Dong Reviewed-by: Ray Ni Cc: Rahul Kumar Tested-by: Gerd Hoffmann Acked-by: Gerd Hoffmann --- UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) (limited to 'UefiCpuPkg') diff --git a/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c b/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c index 37713ec659..52535e5a8d 100644 --- a/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c +++ b/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c @@ -1,7 +1,7 @@ /** @file This library implements CpuPageTableLib that are generic for IA32 family CPU. - Copyright (c) 2022, Intel Corporation. All rights reserved.
+ Copyright (c) 2022 - 2023, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent **/ @@ -375,15 +375,6 @@ PageTableLibMapInLevel ( // we need to change PDPTE[0].ReadWrite = 1 and let all PDE[0-255].ReadWrite = 0 in this step. // when PDPTE[0].Nx = 1 but caller wants to map [0-2MB] as Nx = 0 (PDT[0].Nx = 0) // we need to change PDPTE[0].Nx = 0 and let all PDE[0-255].Nx = 1 in this step. - if ((ParentPagingEntry->Pnle.Bits.Present == 0) && (Mask->Bits.Present == 1) && (Attribute->Bits.Present == 1)) { - if (Modify) { - ParentPagingEntry->Pnle.Bits.Present = 1; - } - - ChildAttribute.Bits.Present = 0; - ChildMask.Bits.Present = 1; - } - if ((ParentPagingEntry->Pnle.Bits.ReadWrite == 0) && (Mask->Bits.ReadWrite == 1) && (Attribute->Bits.ReadWrite == 1)) { if (Modify) { ParentPagingEntry->Pnle.Bits.ReadWrite = 1; -- cgit v1.2.3