[PATCHv4 0/7] Better page protections for arm64

Apologies for the spam for those on the direct mail, I had a typo in the mailing list name.

On 10/27/2014 1:12 PM, Laura Abbott wrote:

Hi,

This is v4 of the series to add stricter page protections for arm64.
The goal is to have text be RO/X and everything else be RW/NX.
More testing is still needed all around, especially with additional
page table levels. Some of this work may conflict with ongoing work
to support ARCH_DEBUG_PAGEALLOC on arm64[1] so depending on where
that goes I may need to rebase or re-work the code.


Thanks,
Laura

[1] http://www.spinics.net/lists/arm-kernel/msg372216.html

Laura Abbott (7):
   arm64: Treat handle_arch_irq as a function pointer
   arm64: Switch to ldr for loading the stub vectors
   arm64: Move cpu_resume into the text section
   arm64: Move some head.text functions to executable section
   arm64: Factor out fixmap initialiation from ioremap
   arm64: use fixmap for text patching when text is RO
   arm64: add better page protections to arm64

  arch/arm64/Kconfig.debug            |  23 +++
  arch/arm64/include/asm/cacheflush.h |   4 +
  arch/arm64/include/asm/fixmap.h     |   8 +-
  arch/arm64/include/asm/insn.h       |   2 +
  arch/arm64/include/asm/irq.h        |   1 -
  arch/arm64/kernel/entry.S           |   6 +-
  arch/arm64/kernel/head.S            |   7 +-
  arch/arm64/kernel/insn.c            |  72 ++++++-
  arch/arm64/kernel/irq.c             |   2 +
  arch/arm64/kernel/jump_label.c      |   2 +-
  arch/arm64/kernel/setup.c           |   3 +-
  arch/arm64/kernel/sleep.S           |  12 +-
  arch/arm64/kernel/vmlinux.lds.S     |  17 ++
  arch/arm64/mm/init.c                |   1 +
  arch/arm64/mm/ioremap.c             |  93 +--------
  arch/arm64/mm/mm.h                  |   2 +
  arch/arm64/mm/mmu.c                 | 397 ++++++++++++++++++++++++++++++++----
  17 files changed, 507 insertions(+), 145 deletions(-)

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