[v5,0/8] set_memory() routines and STRICT_MODULE_RWX

Message

Russell Currey Feb. 26, 2020, 6:35 a.m. UTC

Repost from v4 because I somehow missed half of the final patch.

Picking up from Christophe's last series, including the following changes:

- [6/8] Cast "data" to unsigned long instead of int to fix build
- [8/8] New, to fix an issue reported by Jordan Niethe

Christophe's last series is here:
https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=156428

Christophe Leroy (4):
  powerpc/mm: Implement set_memory() routines
  powerpc/kprobes: Mark newly allocated probes as RO
  powerpc/mm: implement set_memory_attr()
  powerpc/32: use set_memory_attr()

Russell Currey (4):
  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
  powerpc/mm: Disable set_memory() routines when strict RWX isn't
    enabled

 arch/powerpc/Kconfig                   |   2 +
 arch/powerpc/Kconfig.debug             |   6 +-
 arch/powerpc/configs/skiroot_defconfig |   1 +
 arch/powerpc/include/asm/set_memory.h  |  34 +++++++
 arch/powerpc/kernel/kprobes.c          |  17 +++-
 arch/powerpc/mm/Makefile               |   2 +-
 arch/powerpc/mm/pageattr.c             | 117 +++++++++++++++++++++++++
 arch/powerpc/mm/pgtable_32.c           |  95 +++-----------------
 arch/powerpc/mm/ptdump/ptdump.c        |  21 ++++-
 9 files changed, 202 insertions(+), 93 deletions(-)
 create mode 100644 arch/powerpc/include/asm/set_memory.h
 create mode 100644 arch/powerpc/mm/pageattr.c