Re: [Xen-users] USB Support for Windows HVM using VT-D?

["Jefferson E. Noxon" <jeff@xxxxxxxxxxxxxx>]

Mike Brotzman wrote:
> I am trying to get hotplugable USB support in a Windows HVM using Xen
> 3.2 on Fedora 8.  I am running a Dell 755 workstation with VT-D support
> and I am attempting to use the PCI passthrough process to grab a USB
> controller from the workstation and make it available to the Windows XP
> DomU.  I have successfully hidden the USB controller from Dom0 and my
> Windows XP VM does detect a "New USB Controller" but it says it needs
> drivers for the USB Controller and none of the default ones work.  I
> checked out both Dell and Intel looking for any new custom USB drivers
> for the 755 workstation and both sites said that Windows XP SP2+ should
> auto-detect the USB (and thus no special stand alone drivers were
> provided).  The USB controller in question is the Intel ICH9 family.
> 
> Any advice would be greatly appreciated even if the advice consists of
> "this can't be done (yet)" or "you need to run a Linux DomU".  I feel
> that I've either missed something or something is wrong with the brand
> new VT-D technology that is preventing Windows from interfacing with the
> USB controller.  Let me know if any additional information if needed for
> a diagnosis.  Thanks in advance. 

Mike,

I have been unable to get VT-d to pass the motherboard USB controllers
to a domU on a DQ35JO board.  However, I bought a cheap ($25) PCI
Express USB controller and it works just fine for that purpose.  I hope
that helps.

Regards,

Jeff

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