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RE: [Xen-devel] x86 Physical CPUs at different frequencies - timer error

To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-devel] x86 Physical CPUs at different frequencies - timer error messages
From: "Langsdorf, Mark" <mark.langsdorf@xxxxxxx>
Date: Fri, 27 Jul 2007 09:30:57 -0500
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Thread-topic: [Xen-devel] x86 Physical CPUs at different frequencies - timer error messages
> > Is something like this what you meant?  I'm still
> > getting a half dozen Time error messages every time
> > I increase frequency.
> 
> No. The code belongs in Xen itself. Otherwise no other 
> domains will pick up the new scale factor, and even
> dom0 itself may lose it as soon as it
> re-picks up the scale information from Xen.

Oops.

I take it there isn't currently a hypercall to 
support changing it in Xen, though?  Shouldn't
be too hard to add, but I want to confirm.

-Mark Langsdorf
Operating System Research Center
AMD



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