------- Comment From [email protected] 2017-05-16 02:51 EDT-------
Hello,

(In reply to comment #12)
> I'd like to submit and SRU for these four patches.  However, the fourth
> patch attached to this bug seems to have changes since it landed in mainline.
>
> The fourth patch posted in comment #4 does apply cleanly to Ubuntu 17.04.
> However, a cherry pick of 17ed4c8f81da from upstream 4.12-rc1 fails.  The
> cherry pick fails because your patch has:
>
> +       OFFSET(PACA_SIBLING_PACA_PTRS, paca_struct, thread_sibling_pacas);
>
> However, the mainline version has changed to:
> +       DEFINE(PACA_SIBLING_PACA_PTRS,
>
> Did you perform a backport of the fourth patch in the version you attached?
> If so, we can apply it to 17.04 that way, but I just want to confirm.

Yes, the attached patches are backports. Especially the fourth patch as
it didn't apply cleanly precisely due to the reason you have alluded to.

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https://bugs.launchpad.net/bugs/1685792

Title:
  Offlined CPUs of a core fail to come up online on POWER9 DD1 (Ubuntu
  17.04)

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