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Re: [Xen-devel] [RFC][PATCH 0/5] Add V4V to Xen



On 14/06 03:56, Tim Deegan wrote:
> At 11:55 +0100 on 14 Jun (1339674908), Jean Guyader wrote:
> > Are you talking about having different version of V4V driver running
> > in the same VM?
> 
> Yes.
> 
> > I don't think that is a problem they both interact with Xen via
> > hypercall directly so if they follow the v4v hypercall interface it's
> > all fine.
> 
> AFAICS if they both try to register the same port then one of them will
> silently get its ring discarded.  And if they both try to communicate
> with the same remote port their entries on the pending lists will get
> merged (which is probably not too bad).  I think the possibility for
> confusion depends on how you use the service.  Still, it seems better
> than the xenstore case, anyway. :)
> 

Not silently, register_ring will return an error.

Jean

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