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From: "Wang, Jian J" <jian.j.wang@intel.com>
To: "edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Subject: Re: [PATCH 0/4] Implement NULL pointer detection feature for special pool
Date: Wed, 13 Sep 2017 08:59:46 +0000	[thread overview]
Message-ID: <D827630B58408649ACB04F44C510003624C85EB8@SHSMSX103.ccr.corp.intel.com> (raw)
In-Reply-To: <d28890b4-fb28-429d-a463-04601cf0cf0d@jwang36-MOBL2.local>

My git has problem in email send. Please ignore these serial patches. I'll send new ones later.

-----Original Message-----
From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Wang@ml01.01.org
Sent: Wednesday, September 13, 2017 4:45 PM
To: edk2-devel@lists.01.org
Subject: [edk2] [PATCH 0/4] Implement NULL pointer detection feature for special pool

The mechanism behind is to trigger a page fault exception at address 0. This can be made by disabling page 0 (0-4095) during page table setup. So this feature can only be available on platform with paging enabled. Once this feature is enabled, any code, like CSM, which has to access memory in page 0 needs to enable this page temporarily in advance and disable it afterwards. PcdNullPointerDetectionPropertyMask is used to control and elaborate the use cases. For example, BIT7 of this PCD must be set for Windows 7 boot on Qemu if BIT0 set; or boot will fail.

Wang, Jian J (4):
  Implement NULL pointer detection in EDK-II Core.
  Implement NULL pointer detection for SMM mode code.
  Update CSM code to temporarily bypass NULL pointer detection if
    enabled.
  Update QemuVideoDxe driver to bypass NULL pointer detection if
    enabled.

 .../Csm/BiosThunk/KeyboardDxe/BiosKeyboard.c       | 10 +++-
 .../Csm/BiosThunk/KeyboardDxe/BiosKeyboard.h       | 18 +++++++
 .../Csm/BiosThunk/KeyboardDxe/KeyboardDxe.inf      |  2 +
 .../Csm/LegacyBiosDxe/LegacyBda.c                  |  4 ++
 .../Csm/LegacyBiosDxe/LegacyBios.c                 | 55 ++++++++++++++++++----
 .../Csm/LegacyBiosDxe/LegacyBiosDxe.inf            |  2 +
 .../Csm/LegacyBiosDxe/LegacyBiosInterface.h        | 23 +++++++++
 .../Csm/LegacyBiosDxe/LegacyBootSupport.c          | 33 ++++++++++---
 .../Csm/LegacyBiosDxe/LegacyPci.c                  | 17 ++++++-
 IntelFrameworkModulePkg/Csm/LegacyBiosDxe/Thunk.c  | 41 ++++++++++------
 MdeModulePkg/Core/Dxe/DxeMain.inf                  |  3 +-
 MdeModulePkg/Core/Dxe/Mem/Page.c                   | 21 +++++----
 MdeModulePkg/Core/Dxe/Misc/MemoryProtection.c      | 47 ++++++++++++++++++
 MdeModulePkg/Core/DxeIplPeim/DxeIpl.h              | 15 ++++++
 MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf            |  3 +-
 MdeModulePkg/Core/DxeIplPeim/DxeLoad.c             | 53 +++++++++++++++++++++
 MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c    |  8 +++-
 MdeModulePkg/Core/DxeIplPeim/X64/DxeLoadFunc.c     |  2 +
 MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c   | 23 ++++++---
 MdeModulePkg/MdeModulePkg.dec                      | 12 +++++
 OvmfPkg/QemuVideoDxe/Driver.c                      | 15 +++++-
 OvmfPkg/QemuVideoDxe/Qemu.h                        | 16 +++++++
 OvmfPkg/QemuVideoDxe/QemuVideoDxe.inf              |  2 +
 UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/PageTbl.c           | 11 +++++
 UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c              | 25 +++++++++-
 UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h         |  2 +
 UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf       | 17 +++----
 UefiCpuPkg/PiSmmCpuDxeSmm/X64/PageTbl.c            | 11 +++++
 28 files changed, 429 insertions(+), 62 deletions(-)

-- 
2.14.1.windows.1


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  reply	other threads:[~2017-09-13  8:56 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-13  8:07 [PATCH 0/4] Implement NULL pointer detection feature for special pool Wang, Jian J
2017-09-13  8:59 ` Wang, Jian J [this message]
     [not found] <Implement NULL pointer detection feature>
2017-09-13  9:25 ` Wang, Jian J

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