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Re: [PATCH v5 05/15] livepatch/powerpc: add TIF_PATCH_PENDING thread flag

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  Re: [PATCH v5 05/15] livepatch/powerpc: add TIF_PATCH_PENDING thread flag Michael Ellerman <mpe@ellerman.id.au> - 2017-03-08 05:20 +0100

#1594844 — Re: [PATCH v5 05/15] livepatch/powerpc: add TIF_PATCH_PENDING thread flag

Josh Poimboeuf <jpoimboe@redhat.com> 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 <jpoimboe@redhat.com>
> Reviewed-by: Petr Mladek <pmladek@suse.com>
> Reviewed-by: Miroslav Benes <mbenes@suse.cz>
> Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
> ---
>  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

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