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Re: [Xen-devel] pv_ops dom0 BUG in xen_flush_tlb_others

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] pv_ops dom0 BUG in xen_flush_tlb_others
From: Christophe Saout <christophe@xxxxxxxx>
Date: Thu, 05 Mar 2009 02:39:59 +0100
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Hi Jeremy,

> > I started compiling a larger package and after I few minute the machine
> > locked up with the following BUG.  It's the second time I observe this
> > one, so it might be a race condition or something lurking here.
> > (possibly not dom0 specific at all)
> >
> > The BUG() is triggered because the CPU mask is empty.  So maybe it's not
> > a xen bug at all, just a weird occurence in the kernel -
> > native_flush_tlb_others doesn't have such a check.
>
> Interesting.  I've never seen it trigger, but I think we can easily 
> remove the test with no bad effects.

I just removed it.  Let's see whether the qt build gets through. :-)

        Christophe



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