Comment 38 for bug 1598312

(In reply to Vladimir Marko from comment #12)
> If you followed the link in comment #9 (posted 2016-12-09), you would have
> found the results of the bisect for Ubuntu (posted 2016-11-30) and two
> possible patches (posted 2016-12-08).
>
> The bisect for Ubuntu yields
>
> 3b806e2b94cad37a8809df7c86f7cfdcd3baa719 is the first bad commit
> commit 3b806e2b94cad37a8809df7c86f7cfdcd3baa719
> Author: Thomas Gleixner <email address hidden>
> Date: Mon Sep 14 12:00:55 2015 +0200
>
> x86/ioapic: Force affinity setting in setup_ioapic_dest()
>
> BugLink: http://bugs.launchpad.net/bugs/1509886
>
> commit 4857c91f0d195f05908fff296ba1ec5fca87066c upstream.
>
> ...
>
> The commit 4857c91f0d195f05908fff296ba1ec5fca87066c does not revert cleanly
> in the current kernel tree but it's rather trivial to do it manually. The
> two possible patches I posted on the Ubuntu bug were successfully tested to
> fix the issue.

Cool. Thanks for your effort.
And we have two fixes that have been verified to fix the problem
https://launchpadlibrarian.net/297109286/revert.patch
and
https://launchpadlibrarian.net/297109378/alternative.patch

Thomas,
can you please take a look at this issue?