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