Re: [RFC PATCH v2 09/18] livepatch/x86: add TIF_PATCH_PENDING thread flag

Andy Lutomirski
2016-04-29T18:08:26Z

On Thu, Apr 28, 2016 at 1:44 PM, Josh Poimboeuf <jpoimboe@redhat.com> wrote:
> Add the TIF_PATCH_PENDING thread flag to enable the new livepatch
> per-task consistency model for x86_64. 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 placed in the least-significant word of the thread_info flags

NAK to that part.

The least-significant word thing is a huge hack that has gotten out of
control. Please add the thing explicitly to all relevant masks.

--Andy