public inbox for devel@edk2.groups.io
 help / color / mirror / Atom feed
* [PATCH 0/4] ArmPkg, ArmVirtpkg ARM: enable strict memory protection
@ 2017-03-01 14:42 Ard Biesheuvel
  2017-03-01 14:42 ` [PATCH 1/4] ArmPkg/CpuDxe ARM: avoid splitting page table sections unnecessarily Ard Biesheuvel
                   ` (3 more replies)
  0 siblings, 4 replies; 6+ messages in thread
From: Ard Biesheuvel @ 2017-03-01 14:42 UTC (permalink / raw)
  To: edk2-devel, leif.lindholm, lersek; +Cc: Ard Biesheuvel

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



^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2017-03-01 19:05 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-03-01 14:42 [PATCH 0/4] ArmPkg, ArmVirtpkg ARM: enable strict memory protection Ard Biesheuvel
2017-03-01 14:42 ` [PATCH 1/4] ArmPkg/CpuDxe ARM: avoid splitting page table sections unnecessarily Ard Biesheuvel
2017-03-01 14:42 ` [PATCH 2/4] ArmPkg/CpuDxe ARM: avoid unnecessary cache/TLB maintenance Ard Biesheuvel
2017-03-01 14:42 ` [PATCH 3/4] ArmPkg/CpuDxe ARM: honour RO/XP attributes in SetMemoryAttributes() Ard Biesheuvel
2017-03-01 14:42 ` [PATCH 4/4] ArmVirtPkg: enable PE/COFF image and memory protection for ARM platforms Ard Biesheuvel
2017-03-01 19:05   ` Laszlo Ersek

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox