[PATCH v12 0/8] powerpc: Further Strict RWX support

[Jordan Niethe]

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 + powerpc/64s/radix: Enable huge vmalloc mappings
(https://lore.kernel.org/linuxppc-dev/20210503091755.613393-1-npiggin@gmail.com/)

For reference the previous revision is available here: 
https://lore.kernel.org/linuxppc-dev/20210429031602.2606654-1-jniethe5@gmail.com/

The changes in v12 for each patch:
Christophe Leroy (2):
  powerpc/mm: implement set_memory_attr()
  powerpc/32: use set_memory_attr()

Jordan Niethe (3):
  powerpc/lib/code-patching: Set up Strict RWX patching earlier
  powerpc/bpf: Remove bpf_jit_free()
  powerpc/bpf: Write protect JIT code

Russell Currey (3):
  powerpc/mm: Implement set_memory() routines
    v12: - change_page_attr() back to taking an action value
         - disallow operating on huge pages
  powerpc/kprobes: Mark newly allocated probes as ROX
    v12: - Switch from __vmalloc_node_range() to module_alloc()
  powerpc: Set ARCH_HAS_STRICT_MODULE_RWX

Some patches were dropped from this revision:
  powerpc: Always define MODULES_{VADDR,END}
    - Can use what Nick did with "Enable huge vmalloc mappings" 

 arch/powerpc/Kconfig                  |   2 +
 arch/powerpc/include/asm/set_memory.h |  34 +++++++
 arch/powerpc/kernel/kprobes.c         |  17 ++++
 arch/powerpc/kernel/module.c          |   4 +-
 arch/powerpc/lib/code-patching.c      |  12 +--
 arch/powerpc/mm/Makefile              |   2 +-
 arch/powerpc/mm/pageattr.c            | 133 ++++++++++++++++++++++++++
 arch/powerpc/mm/pgtable_32.c          |  60 ++----------
 arch/powerpc/net/bpf_jit_comp.c       |  13 +--
 9 files changed, 205 insertions(+), 72 deletions(-)
 create mode 100644 arch/powerpc/include/asm/set_memory.h
 create mode 100644 arch/powerpc/mm/pageattr.c

-- 
2.25.1