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Date: Tue, 28 Apr 2009 07:17:59 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-help] Lockups on a new Celeron-430 system detected and
 resolved.
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To: Martin Shepherd <mcs@domain.hid>
Cc: xenomai-help <xenomai@xenomai.org>

Martin Shepherd wrote:
> On Tue, 28 Apr 2009, Gilles Chanteperdrix wrote:
>> Ok. I missed the NO_HZ option. With NO_HZ (and high res), I can
>> reproduce the issue.
> 
> Excellent. Just to confirm, I was also using NO_HZ and high-res
> timers.

On my side, disabling NO_HZ is enough to make the issue disappear. So, I
am back to my first observation: it looks like a bad interaction between
the I-pipe and the NO_HZ code. And it happens when Linux timing is based
on another timer than the intercepted local APIC timer.

-- 
					    Gilles.