[PATCH v1 0/8] Enable STRICT_KERNEL_RWX

[Balbir Singh <bsingharora@gmail.com>]

Enable STRICT_KERNEL_RWX for PPC64/BOOK3S

These patches enable RX mappings of kernel text.
rodata is mapped RX as well as a trade-off, there
are more details in the patch description

As a prerequisite for R/O text, patch_instruction
is moved over to using a separate mapping that
allows write to kernel text. xmon/ftrace/kprobes
have been moved over to work with patch_instruction

There are a few bug fixes, the updatepp and updateboltedpp
did not use flags as described in PAPR and the ptdump
utility ignored the first PFN

Balbir Singh (8):
  powerpc/lib/code-patching: Enhance code patching
  powerpc/kprobes: Move kprobes over to patch_instruction
  powerpc/xmon: Add patch_instruction supporf for xmon
  powerpc/vmlinux.lds: Align __init_begin to 16M
  powerpc/platform/pseries/lpar: Fix updatepp and updateboltedpp
  powerpc/mm/hash: Implement mark_rodata_ro() for hash
  powerpc/Kconfig: Enable STRICT_KERNEL_RWX
  powerpc/mm/ptdump: Dump the first entry of the linear mapping as well

 arch/powerpc/Kconfig                       |  1 +
 arch/powerpc/include/asm/book3s/64/hash.h  |  3 +
 arch/powerpc/include/asm/book3s/64/radix.h |  4 ++
 arch/powerpc/kernel/kprobes.c              |  4 +-
 arch/powerpc/kernel/vmlinux.lds.S          | 10 +++-
 arch/powerpc/lib/code-patching.c           | 88 ++++++++++++++++++++++++++++--
 arch/powerpc/mm/dump_hashpagetable.c       |  2 +-
 arch/powerpc/mm/pgtable-hash64.c           | 35 ++++++++++++
 arch/powerpc/mm/pgtable-radix.c            |  7 +++
 arch/powerpc/mm/pgtable_64.c               |  9 +++
 arch/powerpc/platforms/pseries/lpar.c      | 13 ++++-
 arch/powerpc/xmon/xmon.c                   |  7 ++-
 12 files changed, 170 insertions(+), 13 deletions(-)

-- 
2.9.3