v5 cover letter: https://lore.kernel.org/kernel-hardening/20191030073111.140493-1-ruscur@xxxxxxxxxx/ 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 v5: [1/5]: Addressed review comments from Christophe Leroy (thanks!) [2/5]: Use patch_instruction() instead of memcpy() thanks to mpe Thanks for the feedback, hopefully this is the final iteration. I have a patch to remove the STRICT_KERNEL_RWX incompatibility with RELOCATABLE for book3s64 coming soon, so with that we should have a great basis for powerpc RWX going forward. 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 | 6 +- arch/powerpc/mm/Makefile | 1 + arch/powerpc/mm/pageattr.c | 83 ++++++++++++++++++++++++++ arch/powerpc/mm/ptdump/ptdump.c | 21 ++++++- 8 files changed, 147 insertions(+), 5 deletions(-) create mode 100644 arch/powerpc/include/asm/set_memory.h create mode 100644 arch/powerpc/mm/pageattr.c -- 2.24.1
