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RE: [Xen-devel] [PATCH] Fix softlockup issue after vcpu hotplug

  • To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, "Tian, Kevin" <kevin.tian@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Graham, Simon" <Simon.Graham@xxxxxxxxxxx>
  • Date: Thu, 1 Feb 2007 13:54:14 -0500
  • Delivery-date: Thu, 01 Feb 2007 10:54:00 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcdESFqDCWsISfq5RGeHgxcxVzRqmQACelaDAAAZiDAAAQnwRAATVWmwABVdeuAAQqkN4AAKff/fAAD8pIA=
  • Thread-topic: [Xen-devel] [PATCH] Fix softlockup issue after vcpu hotplug

> No, the patch that Kevin provided cannot work because it touches the
> watchdog before jiffies has been updated. Since both jiffy update and
> watchdog check happens inside do_timer(), this is a hard problem to
> for
> Linux 2.6.16. You could push the watchdog touch inside the following
> loop
> that calls do_timer(): I think that would work!

Thanks Keir -- I think it's time I moved to 3.0.4 and the later kernel!
Once I've done that, I'll get back to seeing if this issue still exists.


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