Re: [Xen-devel] New Device Model?

["M.A. Williamson" <maw48@xxxxxxxxx>]

> There were some discussion about new device model for replacing the
> QEMU.
>
> Is there any roadmap for that? or working going on in that area which
> can be pointed?
Intel was trying to implement live migrate (and suspend/resume) for HVM 
guests a while back. A new version of ioemu is now in tree, using the 
latest version of QEmu. For the forseeable future, it looks like Qemu will 
be the basis for device emulation. There are plans to move the ioemu 
functionality into paravirtualised stub domains, each serving one HVM 
guest, but this hasn't happened yet (or indeed really begun AFAIK).
> Or do we have to use the paravirtualized drivers on fully virtualized
> guests?
Those are also available (in development, anyhow) but the intent is to 
enhance the ioemu stuff too so that it has higher performance, supports 
migration, etc, etc.
Cheers,
mark

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