# \[PATCH 0/5\] powerpc/kprobes: fixes and cleanups

- From: Naveen N. Rao \<hidden\>
- Date: 2021-05-19 10:48:22 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2021/05/9522787
- Thread: https://ratatoskr.run/linuxppc-dev/2021/05/9522787/t.md

```text
Various fixes and some code refactoring for kprobes on powerpc. The 
first patch fixes an invalid access if probing the first instruction in 
a kernel module. The rest are small cleanups. More details in the 
individual patches.

- Naveen

Naveen N. Rao (5):
  powerpc/kprobes: Fix validation of prefixed instructions across page
    boundary
  powerpc/kprobes: Roll IS_RFI() macro into IS_RFID()
  powerpc/kprobes: Check instruction validity during kprobe registration
  powerpc/kprobes: Refactor arch_prepare_kprobe()
  powerpc/kprobes: Warn if instruction patching failed

 arch/powerpc/include/asm/sstep.h |   7 +-
 arch/powerpc/kernel/kprobes.c    | 112 +++++++++++--------------------
 2 files changed, 43 insertions(+), 76 deletions(-)


base-commit: 3a81c0495fdb91fd9a9b4f617098c283131eeae1
-- 
2.30.2

```