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SubjectRe: [PATCH 2.6.14-rc1-git5] sched: disable preempt in idle tasks

On Thu, 2005-09-22 at 13:25, Nick Piggin wrote:
> Andrew Morton wrote:
> > Nick Piggin <> wrote:
> >
> >>This patch should hopefully fix Nigel's bug.
> >>
> >> Split out from sched-resched-opt.patch. Tested on i386 with acpi idle
> >> and poll idle (previous iterations tested on various other architectures).
> >
> >
> > This makes the emt64 machine reboot itself, which iirc was the behaviour in
> > the failing patch from which this one was split out.
> >
> > The machine is using acpi_processor_idle().
> >
> OK, thanks. That must be the preempt_disable() being called in
> start_secondary(). Maybe I should have listened to the comment.
> Can you try the following patch?

Ok. Well I've fun with that patch for a couple of weeks and had no
recurrences of the issue whatsoever - until I upgraded my kernel
yesterday and forgot to apply it again. In short, it seems to fix the
problem here.



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