Re: [Xen-devel] VGA Passthru HW upgrade

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Wed, Jan 25, 2012 at 09:26:45AM +0100, Pavel Mateja wrote:
> > I can't hear sound in DomU. Hmm, to be honest I've heard some broken
> > pieces,..
> 
> Problem found:
> You can't load linux ALSA driver before you pass the sound card to the 
> virtual 
> machine. Since I removed linux kernel driver Windows play sounds just fine.
>

Thanks for the update. And that's quite obvious reason..
naturally you can't use a single PCI device in multiple domains at the same 
time.

PCI passthru *dedicates* the device to specific domain, so it can only be used 
in that domain.
If dom0 is trying to use it aswell, things will go wrong.

-- Pasi


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel