Re: [Qemu-devel] [PULL 11/13] target-i386: forward CPUID cache leaves when -cpu host is used

[Peter Lieven]

On 19.11.2013 12:37, Paolo Bonzini wrote:
> Il 19/11/2013 12:35, Peter Lieven ha scritto:
> > next question: is cache leaf forwarding a migration blocker?
> "-cpu host" in general is "interesting" at migration time, so I would
> say no.
It works for for a long time as long as all cpu features that are supported on 
the source
are also supported on the destination.

As for the cache leaves feature I would go for making it a optional parameter. 
If we
woudl want to support it, we need to adjust several cpuid indexes to reflect 
the emulated
cpu topology. Question would be to what extend the cache information would then
make sense. Or with other words if one wants to use cache leaf pass-thru the 
topology
must match the physical one?

Peter