Re: [Xen-devel] Re: [Xen-users] dom0 hangs in xen 4.0.1-rc3-pre

[Andreas Kinzler <ml-xen-devel@xxxxxx>]

On 27.09.2010 16:32, Bruce Edge wrote:
> > > Does this affect all Nehalem chips or only the Lynnfields? The .21 kernel
> > > is  causing grief for us too.  I was wondering if this was related.
> > I am still researching this. For testing I bought a test system with
> > Westmere-EP (Xeon E5620) which has ARAT. This system worked stable while
> > Intel still lists it as having the C6 errata. This leads me to the
> > conclusion that the HPET timer migration code (called HPET broadcast) from
> > Xen is the root cause. This affects all CPUs that use it - but mainly
> > Nehalem because of turbo mode.
> Thanks for the info. I'll try disabling turbo mode in the BIOS and see if
> that helps.
> Let me know if there's anything I can run/do/test/etc.
If you want to check the issue I am referring to then you need to apply 
my patch from: 
http://lists.xensource.com/archives/html/xen-devel/2010-09/msg00556.html
Do not modify the BIOS settings in any way.

Regards Andreas

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