Adding more Strict RWX support on powerpc, in particular Strict Module RWX. Thanks for all of the feedback everyone. It is now rebased on linux-next.
For reference the previous revision is available here: https://lore.kernel.org/linuxppc-dev/20210330045132.722243-1-jniet...@gmail.com/ The changes in v11 for each patch: Christophe Leroy (2): powerpc/mm: implement set_memory_attr() powerpc/32: use set_memory_attr() Jordan Niethe (4): powerpc/lib/code-patching: Set up Strict RWX patching earlier powerpc: Always define MODULES_{VADDR,END} v11: - Consider more places MODULES_VADDR was being used powerpc/bpf: Remove bpf_jit_free() v11: - New to series powerpc/bpf: Write protect JIT code v11: - Remove CONFIG_STRICT_MODULE_RWX conditional Russell Currey (3): powerpc/mm: Implement set_memory() routines v11: - Update copywrite dates - Allow set memory functions to be used without Strict RW - Hash: Disallow certain regions and add comment explaining why - Have change_page_attr() take function pointers to manipulate ptes - Clarify change_page_attr()'s comment - Radix: Add ptesync after set_pte_at() powerpc/kprobes: Mark newly allocated probes as ROX v11: Neaten up powerpc: Set ARCH_HAS_STRICT_MODULE_RWX v11: Neaten up Some patches were dropped from this revision: powerpc/mm/ptdump: debugfs handler for W+X checks at runtime - Will use Christophe's generic ptdump series powerpc/configs: Enable STRICT_MODULE_RWX in skiroot_defconfig - Will enable STRICT_MODULE_RWX by default later arch/powerpc/Kconfig | 2 + arch/powerpc/include/asm/pgtable.h | 11 ++ arch/powerpc/include/asm/set_memory.h | 12 +++ arch/powerpc/kernel/kprobes.c | 11 ++ arch/powerpc/kernel/module.c | 14 +-- arch/powerpc/lib/code-patching.c | 12 +-- arch/powerpc/mm/Makefile | 2 +- arch/powerpc/mm/kasan/kasan_init_32.c | 10 +- arch/powerpc/mm/pageattr.c | 138 ++++++++++++++++++++++++++ arch/powerpc/mm/pgtable_32.c | 60 ++--------- arch/powerpc/mm/ptdump/ptdump.c | 4 +- arch/powerpc/net/bpf_jit_comp.c | 13 +-- 12 files changed, 204 insertions(+), 85 deletions(-) create mode 100644 arch/powerpc/include/asm/set_memory.h create mode 100644 arch/powerpc/mm/pageattr.c -- 2.25.1
