[PATCH v5 0/5] Implement STRICT_MODULE_RWX for powerpc

[Russell Currey]

v4 cover letter: https://lists.ozlabs.org/pipermail/linuxppc-dev/2019-October/198268.html
v3 cover letter: https://lists.ozlabs.org/pipermail/linuxppc-dev/2019-October/198023.html

Changes since v4:
	[1/5]: Addressed review comments from Michael Ellerman (thanks!)
	[4/5]: make ARCH_HAS_STRICT_MODULE_RWX depend on
	       ARCH_HAS_STRICT_KERNEL_RWX to simplify things and avoid
	       STRICT_MODULE_RWX being *on by default* in cases where
	       STRICT_KERNEL_RWX is *unavailable*
	[5/5]: split skiroot_defconfig changes out into its own patch

The whole Kconfig situation is really weird and confusing, I believe the
correct resolution is to change arch/Kconfig but the consequences are so
minor that I don't think it's worth it, especially given that I expect
powerpc to have mandatory strict RWX Soon(tm).

Russell Currey (5):
  powerpc/mm: Implement set_memory() routines
  powerpc/kprobes: Mark newly allocated probes as RO
  powerpc/mm/ptdump: debugfs handler for W+X checks at runtime
  powerpc: Set ARCH_HAS_STRICT_MODULE_RWX
  powerpc/configs: Enable STRICT_MODULE_RWX in skiroot_defconfig

 arch/powerpc/Kconfig                   |  2 +
 arch/powerpc/Kconfig.debug             |  6 +-
 arch/powerpc/configs/skiroot_defconfig |  1 +
 arch/powerpc/include/asm/set_memory.h  | 32 +++++++++++
 arch/powerpc/kernel/kprobes.c          |  3 +
 arch/powerpc/mm/Makefile               |  1 +
 arch/powerpc/mm/pageattr.c             | 77 ++++++++++++++++++++++++++
 arch/powerpc/mm/ptdump/ptdump.c        | 21 ++++++-
 8 files changed, 140 insertions(+), 3 deletions(-)
 create mode 100644 arch/powerpc/include/asm/set_memory.h
 create mode 100644 arch/powerpc/mm/pageattr.c

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2.23.0