Re: [Xen-devel] any plans to sopport virtio-serial ?

[Gerd Hoffmann <kraxel@xxxxxxxxxx>]

  Hi,

> As I understand it (which is very vague) virtio allows each architecture
> to supply device discovery, shared ring and event notification backends
> which it then builds the specific device services on top of.
Yes. I think there are three backends now: pci, lguest, s390.

> I think the
> most obvious solution is to do device discovery using XenStore but to do
> the shared ring and event notification bits with page grants and event
> channels respectively. I was under the impression that virtio was
> designed with the possibility of this sort of Xen backend in mind.
Yes, that should be possible.

Another option would be to just use the pci backend.  As I understand it 
nowdays pci is available even in pv guests for pci device passthrough, 
so in theory this should work fine for both pv and hvm guests ...
cheers,
  Gerd


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