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Re: [Xen-devel] [PATCH] libxl: add a vkbd device to HVM guests by default

On Mon, 2011-06-27 at 13:14 +0100, Stefano Stabellini wrote:
> On Mon, 27 Jun 2011, Ian Campbell wrote:
> > On Fri, 2011-06-24 at 17:29 +0100, Stefano Stabellini wrote:
> > > PV on HVM drivers can connect to the vkbd device to receive mouse and
> > > keyboard events from Qemu. The advantage over USB is that vkbd doesn't
> > > require frequent wakeups in Qemu.
> > 
> > Do we need an unplug protocol in order to stop these frequent wakeups?
> No, we just need to disable USB. The only reason to have USB is to have
> USB tablet support (absolute mouse coordinates).

That means users need to be aware that they have the appropriate
frontends and manually edit their guest config?

> > Do frontends/guests generally cope with two keyboards correctly?
> > (whatever correctly means, I guess it's not obvious once you have a vfb
> > as well as emulated VGA).
> Yes, without any problems. Having multiple vfbs would be more
> complicated but it is not part of this series.



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