# Re: \[PATCH v5 05/15\] livepatch/powerpc: add TIF\_PATCH\_PENDING thread flag

- From: Michael Ellerman \<mpe@ellerman.id.au\>
- Date: 2017-03-08 04:14:19 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2017/03/4948839
- Thread: https://ratatoskr.run/linuxppc-dev/2017/02/4933694/t.md

```text
Josh Poimboeuf [ref] writes:

> Add the TIF_PATCH_PENDING thread flag to enable the new livepatch
> per-task consistency model for powerpc.  The bit getting set indicates
> the thread has a pending patch which needs to be applied when the thread
> exits the kernel.
>
> The bit is included in the _TIF_USER_WORK_MASK macro so that
> do_notify_resume() and klp_update_patch_state() get called when the bit
> is set.
>
> Signed-off-by: Josh Poimboeuf <redacted>
> Reviewed-by: Petr Mladek <pmladek@suse.com>
> Reviewed-by: Miroslav Benes <mbenes@suse.cz>
> Reviewed-by: Kamalesh Babulal <redacted>
> ---
>  arch/powerpc/include/asm/thread_info.h | 4 +++-
>  arch/powerpc/kernel/signal.c           | 4 ++++
>  2 files changed, 7 insertions(+), 1 deletion(-)

The arch changes here seem fine. I haven't tested the whole series
though.

Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)

cheers
```