RE: [Xen-devel] Live Migration Across AMD and Intel

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

> On 2/12/08 09:05, "Igor Chubin" <igor@xxxxxxx> wrote:
> 
> > Hello, All.
> >
> > Do I understand correctly:
> >
> > for the present it is possible to make domain live migration
> > across two hosts, one of which is Intel-CPU-based and
> > another is AMD-CPU-based?
> >
> > Does CPUID feature of Xen 3.3 permit live migration only
> > between hosts with CPUs with different flags but
> > produce by the same vendor?
> >
> > What is the difference (from domU perspective)
> > between such CPUs, that prohibits live migration?
> 
> Supported instructions differ (even at the basic level of SYSENTER
versus
> SYSCALL in some situations). Supported architectural MSRs differ too.
> 
> Actually it could be forced to work sometimes, but it's not
particularly
> something we want to be claiming to support.
> 

This appeared on slashdot a while ago...
http://linux.slashdot.org/linux/08/11/07/1535235.shtml. I'm not sure
that their source is that reputable though. If you were emulating a 486
it might work :)

James 

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