[PATCH 0/3] powerpc: Enhance error handling with patch_instruction()

["Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>]

This patchset updates error handling with patch_instruction(). The first 
patch fixes an issue with do_patch_instruction() with STRICT_KERNEL_RWX 
wherein errors were not being returned back. The second and third 
patches update users of patch_instruction() in ftrace and kprobes code 
to properly validate return value from patch_instruction() and to notify 
errors.

- Naveen

Naveen N. Rao (3):
  powerpc: Properly return error code from do_patch_instruction()
  powerpc/ftrace: Simplify error checking when patching instructions
  powerpc/kprobes: Check return value of patch_instruction()

 arch/powerpc/kernel/kprobes.c      | 10 ++-
 arch/powerpc/kernel/optprobes.c    | 99 ++++++++++++++++++++++++------
 arch/powerpc/kernel/trace/ftrace.c | 69 ++++++++++-----------
 arch/powerpc/lib/code-patching.c   |  6 +-
 4 files changed, 123 insertions(+), 61 deletions(-)


base-commit: 8299da600ad05b8aa0f15ec0f5f03bd40e37d6f0
-- 
2.25.1