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 -- 2.23.0
