linux-kernel - Re: [GIT pull] CPU hotplug updates for 4.9

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Date:   Thu, 9 Mar 2017 22:48:16 +0000
From:   Bart Van Assche <Bart.VanAssche@...disk.com>
To:     "tglx@...utronix.de" <tglx@...utronix.de>
CC:     "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
        "mingo@...nel.org" <mingo@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "hpa@...or.com" <hpa@...or.com>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
Subject: Re: [GIT pull] CPU hotplug updates for 4.9

On Thu, 2017-03-09 at 18:43 +0100, Thomas Gleixner wrote:
> Ok, so it's random. Now it would be interesting what the rest of the system
> does when this happens. I still have no idea why that IOAT setting has any
> influence.

Hello Thomas,

The cpuhp_issue_call() hang happens during boot and before I get the chance to log
in with ssh. Can you be more specific about what information you are looking for?

Anyway, the result of a new bisect I ran is as follows:
* good: 631ddaba5905 ("Merge branches 'pm-sleep' and 'powercap'").
* good: 80f1b3dea9d4 ("Merge branch 'device-properties'").
* bad:  a67485d4bf97 ("Merge tag 'acpi-4.10-rc1' of
  git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm").

Does this make sense to you?

Thanks,

Bart.