> Patch V2 changes: > a. Remove local variable initializer with memory copy from globals > b. Change map table dump code to use DEBUG_PAGE|DEBUG_POOL level > message > c. Fix malfunction in 32-bit boot mode > d. Add comment for the use of mOnGuarding > e. Change name of function InitializePageTableLib to > InitializePageTableGlobals > f. Add code in 32-bit code to bypass setting page table to read-only > g. Coding style clean-up >
This feature makes use of paging mechanism to add a hidden (not present) page just before and after the allocated memory block. If the code tries to access memory outside of the allocated part, page fault exception will be triggered. This feature is disabled by default and is not recommended to enable it in production build of BIOS. Cc: Star Zeng <star.z...@intel.com> Cc: Eric Dong <eric.d...@intel.com> Cc: Jiewen Yao <jiewen....@intel.com> Cc: Michael Kinney <michael.d.kin...@intel.com> Cc: Ayellet Wolman <ayellet.wol...@intel.com> Suggested-by: Ayellet Wolman <ayellet.wol...@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Jian J Wang <jian.j.w...@intel.com> Jian J Wang (6): MdeModulePkg/DxeCore: Implement heap guard feature for UEFI MdeModulePkg/PiSmmCore: Implement heap guard feature for SMM mode MdeModulePkg/MdeModulePkg.dec,.uni: Add heap guard related PCDs and string tokens UefiCpuPkg/CpuDxe: Reduce debug message UefiCpuPkg/PiSmmCpuDxeSmm: Disable page table protection MdeModulePkg/DxeIpl: Enable paging for heap guard MdeModulePkg/Core/Dxe/DxeMain.inf | 4 + MdeModulePkg/Core/Dxe/Mem/HeapGuard.c | 1184 +++++++++++++++++++ MdeModulePkg/Core/Dxe/Mem/HeapGuard.h | 380 ++++++ MdeModulePkg/Core/Dxe/Mem/Imem.h | 38 +- MdeModulePkg/Core/Dxe/Mem/Page.c | 129 +- MdeModulePkg/Core/Dxe/Mem/Pool.c | 154 ++- MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf | 1 + MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c | 29 +- MdeModulePkg/Core/PiSmmCore/Misc/HeapGuard.c | 1446 +++++++++++++++++++++++ MdeModulePkg/Core/PiSmmCore/Misc/HeapGuard.h | 400 +++++++ MdeModulePkg/Core/PiSmmCore/Misc/PageTable.c | 704 +++++++++++ MdeModulePkg/Core/PiSmmCore/Misc/PageTable.h | 174 +++ MdeModulePkg/Core/PiSmmCore/Page.c | 51 +- MdeModulePkg/Core/PiSmmCore/PiSmmCore.c | 12 +- MdeModulePkg/Core/PiSmmCore/PiSmmCore.h | 80 +- MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf | 8 + MdeModulePkg/Core/PiSmmCore/Pool.c | 75 +- MdeModulePkg/MdeModulePkg.dec | 57 + MdeModulePkg/MdeModulePkg.uni | 58 + UefiCpuPkg/CpuDxe/CpuPageTable.c | 5 +- UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/PageTbl.c | 7 + UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf | 1 + UefiCpuPkg/PiSmmCpuDxeSmm/X64/PageTbl.c | 3 +- 23 files changed, 4904 insertions(+), 96 deletions(-) create mode 100644 MdeModulePkg/Core/Dxe/Mem/HeapGuard.c create mode 100644 MdeModulePkg/Core/Dxe/Mem/HeapGuard.h create mode 100644 MdeModulePkg/Core/PiSmmCore/Misc/HeapGuard.c create mode 100644 MdeModulePkg/Core/PiSmmCore/Misc/HeapGuard.h create mode 100644 MdeModulePkg/Core/PiSmmCore/Misc/PageTable.c create mode 100644 MdeModulePkg/Core/PiSmmCore/Misc/PageTable.h -- 2.14.1.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel