mbox series

[edk2,0/4] ArmPkg, ArmVirtpkg ARM: enable strict memory protection

Message ID 1488379344-16273-1-git-send-email-ard.biesheuvel@linaro.org
Headers show
Series ArmPkg, ArmVirtpkg ARM: enable strict memory protection | expand

Message

Ard Biesheuvel March 1, 2017, 2:42 p.m. UTC 
This series makes the prerequisite modifications to the ARM version of
the CpuDxe driver so we can enable PE/COFF image and NX memory protection
for ARM platforms, including ArmVirtPkg (#4)

Patch #1 refactors CpuSetMemoryAttributes() so it no longer splits section
mappings into page mappings unnecessarily.

Patch #2 removes some unnecessary cache/TLB maintenance, which becomes very
costly when CpuSetMemoryAttributes() is used in anger as is the case with
memory protections enabled.

Patch #3 wires up the EFI_MEMORY_RO/EFI_MEMORY_XP attributes, which were
ignored before.

Patch #4 enables the protection features for ArmVirtPkg platforms when 
built for 32-bit ARM.

Ard Biesheuvel (4):
  ArmPkg/CpuDxe ARM: avoid splitting page table sections unnecessarily
  ArmPkg/CpuDxe ARM: avoid unnecessary cache/TLB maintenance
  ArmPkg/CpuDxe ARM: honour RO/XP attributes in SetMemoryAttributes()
  ArmVirtPkg: enable PE/COFF image and memory protection for ARM
    platforms

 ArmPkg/Drivers/CpuDxe/Arm/Mmu.c | 209 ++++++++++----------
 ArmVirtPkg/ArmVirt.dsc.inc      |   9 +-
 2 files changed, 109 insertions(+), 109 deletions(-)

-- 
2.7.4

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