716087e2be
We are going to reduce reserved memory consumption by page table buffer, then OS can have more available memory to use. Take PhysicalAddressBits = 48 and 2MB page granularity as example, 1:1 Virtual to Physical identity mapping page table buffer needs to be ((512 + 1) * 512 + 1) * 4096 = 1075843072 bytes = 0x40201000 bytes. The code is updated to build 4G page table by default and only use 8 extra pages to handles > 4G request by page fault. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18069 6f19259b-4bc3-4df7-8a09-765794883524
60 lines
1.7 KiB
INI
60 lines
1.7 KiB
INI
## @file
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# CapsuleX64 module handles >4GB capsule blocks.
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#
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# The X64 entrypoint to process capsule in long mode.
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# This module is built as X64.
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#
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# Caution: This module requires additional review when modified.
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# This driver will have external input - capsule image.
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# This external input must be validated carefully to avoid security issue like
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# buffer overflow, integer overflow.
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#
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# Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions
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# of the BSD License which accompanies this distribution. The
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# full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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##
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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = CapsuleX64
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MODULE_UNI_FILE = CapsuleX64.uni
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FILE_GUID = F7FDE4A6-294C-493c-B50F-9734553BB757
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MODULE_TYPE = PEIM
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VERSION_STRING = 1.0
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#
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# The following information is for reference only and not required by the build tools.
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#
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# VALID_ARCHITECTURES = X64
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#
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[Sources]
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X64/X64Entry.c
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X64/PageFaultHandler.asm
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X64/PageFaultHandler.S
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Common/CapsuleCoalesce.c
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[Packages]
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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[LibraryClasses]
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BaseLib
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DebugLib
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CpuExceptionHandlerLib
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DebugAgentLib
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[Depex]
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FALSE
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[UserExtensions.TianoCore."ExtraFiles"]
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CapsuleX64Extra.uni
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