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fuchsia / third_party / edk2 / 2af2988f3a0268b02d87a97d5b6d7b65b17c0b03
commit2af2988f3a0268b02d87a97d5b6d7b65b17c0b03[log] [tgz]
authorJian J Wang <jian.j.wang@intel.com>Thu Aug 23 15:58:31 2018 +0800
committerJian J Wang <jian.j.wang@intel.com>Mon Sep 10 09:28:26 2018 +0800
treea4968ad2c7926b6e4e679b7b94be46395aafdb01
parent4b2dc555d8a67e715d8fafab4c9131791d31a788 [diff]
MdeModulePkg/DxeIpl: disable paging before creating new page table

PEI Stack Guard needs to enable paging before DxeIpl. This might cause
#GP in the transition from 32-bit PEI to 64-bit DXE due to the code
trying to write CR3 register with PML4 page table while the processor
is enabled with PAE paging.

Simply disabling paging before updating CR3 can solve this conflict.
There's no such issue for 64-bit PEI so this change applies only to
32-bit code.

Cc: Star Zeng <star.zeng@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: "Ware, Ryan R" <ryan.r.ware@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
1 file changed
tree: a4968ad2c7926b6e4e679b7b94be46395aafdb01
  1. AppPkg/
  2. ArmPkg/
  3. ArmPlatformPkg/
  4. ArmVirtPkg/
  5. BaseTools/
  6. BeagleBoardPkg/
  7. Conf/
  8. CorebootModulePkg/
  9. CorebootPayloadPkg/
  10. CryptoPkg/
  11. DuetPkg/
  12. EdkCompatibilityPkg/
  13. EdkShellBinPkg/
  14. EdkShellPkg/
  15. EmbeddedPkg/
  16. EmulatorPkg/
  17. FatBinPkg/
  18. FatPkg/
  19. FmpDevicePkg/
  20. IntelFrameworkModulePkg/
  21. IntelFrameworkPkg/
  22. IntelFsp2Pkg/
  23. IntelFsp2WrapperPkg/
  24. IntelFspPkg/
  25. IntelFspWrapperPkg/
  26. IntelSiliconPkg/
  27. MdeModulePkg/
  28. MdePkg/
  29. NetworkPkg/
  30. Nt32Pkg/
  31. Omap35xxPkg/
  32. OptionRomPkg/
  33. OvmfPkg/
  34. PcAtChipsetPkg/
  35. QuarkPlatformPkg/
  36. QuarkSocPkg/
  37. SecurityPkg/
  38. ShellBinPkg/
  39. ShellPkg/
  40. SignedCapsulePkg/
  41. SourceLevelDebugPkg/
  42. StandaloneMmPkg/
  43. StdLib/
  44. StdLibPrivateInternalFiles/
  45. UefiCpuPkg/
  46. UnixPkg/
  47. Vlv2DeviceRefCodePkg/
  48. Vlv2TbltDevicePkg/
  49. .gitignore
  50. .gitmodules
  51. BuildNotes2.txt
  52. Contributions.txt
  53. edksetup.bat
  54. edksetup.sh
  55. License.txt
  56. Maintainers.txt
  57. Readme.md
Readme.md

EDK II Project

A modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications from www.uefi.org.

Contributions to the EDK II open source project are covered by the TianoCore Contribution Agreement 1.1

The majority of the content in the EDK II open source project uses a BSD 2-Clause License. The EDK II open source project contains the following components that are covered by additional licenses:

The EDK II Project is composed of packages. The maintainers for each package are listed in Maintainers.txt.

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