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[Xen-users] Does USB passthru require VT-d or IOMMU?

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Does USB passthru require VT-d or IOMMU?
From: Henning Holtschneider <henning@xxxxxxxx>
Date: Wed, 29 Oct 2008 15:13:36 +0100
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Hello everybody,

I'm running Xen 3.3.0 on Ubuntu 8.10 server. I'm trying to pass a USB device to a Windows 2003 DomU, but the qemu logfile just tells me "Warning: could not add USB device host:0123:4567". Before I start to debug the problem more thoroughly, I wonder: do I need a mainboard chipset that supports Intel's VT-d technology or AMD's IOMMU to pass individual USB devices from the Dom0 to a DomU?

Best regards,
Henning Holtschneider
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Geschäftsführer Sven Haufe, Henning Holtschneider

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