Re: [PATCH v1] MdeModulePkg/DxeIpl: Create 5-level page table for long mode

["Ni, Ray" <ray.ni@intel.com>]

Reviewed-by: Ray Ni <ray.ni@intel.com>

-----Original Message-----
From: Lou, Yun <yun.lou@intel.com> 
Sent: Friday, March 11, 2022 11:59 PM
To: devel@edk2.groups.io
Cc: Lou, Yun <yun.lou@intel.com>; Ni, Ray <ray.ni@intel.com>; Bi, Dandan <dandan.bi@intel.com>; Gao, Liming <gaoliming@byosoft.com.cn>
Subject: [PATCH v1] MdeModulePkg/DxeIpl: Create 5-level page table for long mode

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2008

Correct the logic about whether 5-level paging is supported.

Signed-off-by: Jason Lou <yun.lou@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
---
 MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c b/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c
index 0700f310b2..1ebab27820 100644
--- a/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c
+++ b/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c
@@ -15,7 +15,7 @@
     2) IA-32 Intel(R) Architecture Software Developer's Manual Volume 2:Instruction Set Reference, Intel

     3) IA-32 Intel(R) Architecture Software Developer's Manual Volume 3:System Programmer's Guide, Intel

 

-Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2006 - 2022, Intel Corporation. All rights reserved.<BR>

 Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>

 

 SPDX-License-Identifier: BSD-2-Clause-Patent

@@ -748,8 +748,8 @@ CreateIdentityMappingPageTables (
       CPUID_STRUCTURED_EXTENDED_FEATURE_FLAGS,

       CPUID_STRUCTURED_EXTENDED_FEATURE_FLAGS_SUB_LEAF_INFO,

       NULL,

-      &EcxFlags.Uint32,

       NULL,

+      &EcxFlags.Uint32,

       NULL

       );

     if (EcxFlags.Bits.FiveLevelPage != 0) {

-- 
2.28.0.windows.1