[Qemu-devel] Re: UHCI idle detection

[Gerd Hoffmann]

On 01/04/11 14:49, Anthony Liguori wrote:
> On 01/04/2011 07:43 AM, Gerd Hoffmann wrote:
> > Hi,
> >
> > > > Windows guests needs some registry hackery and Linux guests some
> > > > udev rules
> > > > to enable remote wakeup permanently.
> > >
> > > That commit inspired me to look at UHCI. If the solution requires
> > > modifying the guest then it is not widely useful.
> >
> > Well, long-term this shouldn't be a big issue. I expect guest agents
> > become commonplace soonish as some features require guest cooperation,
> > so the guest agents can also care about this kind of tweaks. Also for
> > linux we can try to send the changes to upstream udev to have it
> > spread into linux distros.
>
> I think we're long overdue for a paravirtual mouse. Basically, a virtio
> version of xenkbd-front.c. In fact, it's probably possible to reuse the
> protocol.

Oh, there already is one.  vmmouse.  Recent Xorg versions even use it 
automagically.  With Fedora 14 (as guest) you can drop the usb tablet 
and you still have an absolute mouse pointer because of that ;)

Windows is more tricky as it doesn't work out-of-the-box but that 
wouldn't be different with a virtio-based mouse.

cheers,
  Gerd