Messages in this thread |  | | Date | Wed, 22 Jan 2014 12:54:21 +0100 | From | Peter Zijlstra <> | Subject | Re: [Bisected] qemu hangs on current git |
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On Wed, Jan 22, 2014 at 12:44:43PM +0100, Markus Trippelsdorf wrote: > 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@infradead.org> > > > 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.
Ah, indeed, VOLUNTARY needs this for should_resched; daft of me.
Thanks for testing!
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