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

Andy Lutomirski luto at amacapital.net
Sat Apr 30 04:08:04 AEST 2016


On Thu, Apr 28, 2016 at 1:44 PM, Josh Poimboeuf <jpoimboe at 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


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