This series enables the non-exec DXE stack feature for AARCH64. It involves
some refactoring of ArmLib so we can reuse the bulk of the page table
manipulation code (patch #1). Then, it is simply a matter of calling the
newly introduced ArmSetMemoryRegionNoExec () [patch #2] on the stack region
right after it has been allocated (patch #3).
Patch #4 enables the feature for ArmVirtQemu if building for AARCH64.
Ard Biesheuvel (4):
ArmPkg/AArch64Mmu: move page table traversal code to separate function
ArmPkg/AArch64Mmu: add functions to set/clear RO and XN bits on
regions
MdeModulePkg/DxeIplPeim: implement non-exec stack for ARM/AARCH64
ArmVirtPkg/ArmVirtQemu: enable non-exec DXE stack for AARCH64
ArmPkg/Include/Library/ArmLib.h | 24 ++++
ArmPkg/Library/ArmLib/AArch64/AArch64Mmu.c | 133 +++++++++++++++++---
ArmPkg/Library/ArmLib/ArmV7/ArmV7Mmu.c | 36 ++++++
ArmVirtPkg/ArmVirtQemu.dsc | 3 +
MdeModulePkg/Core/DxeIplPeim/Arm/DxeLoadFunc.c | 7 ++
MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf | 8 ++
6 files changed, 192 insertions(+), 19 deletions(-)
--
1.9.1
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