Re: [Bisected] qemu hangs on current git

From: Markus Trippelsdorf
Date: Wed Jan 22 2014 - 06:44:51 EST


On 2014.01.22 at 11:24 +0100, Peter Zijlstra wrote:
> On Wed, Jan 22, 2014 at 10:37:55AM +0100, Markus Trippelsdorf wrote:
> > git bisect points to:
> >
> > commit 8cb75e0c4ec9786b81439761eac1d18d4a931af3
> > Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> > Date: Wed Nov 20 12:22:37 2013 +0100
> >
> > sched/preempt: Fix up missed PREEMPT_NEED_RESCHED folding
> >
>
> No idea why kvm would go funny on that, real hardware runs fine.
>
> You're running a !PREEMPT kernel, right? Does the below make any
> difference?

Yes: CONFIG_PREEMPT_VOLUNTARY=y
And yes, your patch fixes the issue.
Thanks.

--
Markus
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