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Re: [Qemu-devel] Re: [PATCH v2 4/9] provide in-kernel apic


From: Jamie Lokier
Subject: Re: [Qemu-devel] Re: [PATCH v2 4/9] provide in-kernel apic
Date: Fri, 9 Oct 2009 11:06:41 +0100
User-agent: Mutt/1.5.13 (2006-08-11)

Glauber Costa wrote:
> > It ensures the two models are compatible.  Since they're the same device  
> > from the point of view of the guest, there's no reason for them to have  
> > different representations or to be incompatible.
> 
> live migration between something that has in-kernel irqchip and
> something that has not is likely to be a completely untested
> thing. And this is the only reason we might think of it as the same
> device. I don't see any value in supporting this combination

Not just live migration.  ACPI sleep + savevm + loadvm + ACPI resume,
for example.

-- Jamie




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