Re: [Xen-users] usb passthrough

[chris <tknchris@xxxxxxxxx>]

Pasi,

I know, my understanding was that pvusb was simply for exposing usb
mass storage as a block device to the domain. I've never actually used
it but I believe you can do this with a hvm domain without anything
special. If anyone can actually confirm this it would be good to know
:)

As far as his original question, he needs vt-d to passthrough any
physical device to a hvm domain.

- chris

On Fri, Feb 26, 2010 at 10:03 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> On Fri, Feb 26, 2010 at 10:00:34AM -0500, chris wrote:
>> He said it was a HVM guest. I don't think you can passthrough to a hvm
>> domain anything except usb storage with pvusb, correct?
>>
>
> pvusb is different from the 'normal' usb=1 / usbdevice = [] stuff..
>
> I'm not totally sure what devices are supported with pvusb and with the 
> normal usb passthrough.
>
> -- Pasi
>
>> On Fri, Feb 26, 2010 at 9:49 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
>> > On Fri, Feb 26, 2010 at 09:49:38AM -0300, Sergio Charpinel Jr. wrote:
>> >> Hi,
>> >>
>> >> I want to use a webcam in a HVM guest, but my dom0 doesnt support VT-d
>> >> (just VT).
>> >>
>> >
>> > USB passthrough doesn't require VT-d, it's only required for PCI device
>> > passthrough to HVM guests.
>> >
>> >> I tried passing the parameters usb=1 and usbdevice = [ '..' ] and I
>> >> could see an usb device in domU. But it does not know which device is.
>> >>
>> >> Which are the possibilites to do that? I prefer to use hvm machines,
>> >> but if it is not possible, with PV machines it can work?
>> >>
>> >
>> > With PV guest you could passthrough the whole USB controller (the PCI 
>> > device)..
>> >
>> > -- Pasi
>> >
>> >
>> > _______________________________________________
>> > Xen-users mailing list
>> > Xen-users@xxxxxxxxxxxxxxxxxxx
>> > http://lists.xensource.com/xen-users
>> >
>

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