From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Wright <chrisw@sous-sol.org>
Subject: Re: device passthrough
Date: Fri, 28 May 2010 12:33:01 -0700
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To: Mu Lin <mul@juniper.net>
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* Mu Lin (mul@juniper.net) wrote:
> Is there any method to directly assign a device to Guest OS  without VT-d?

Assuming you mean a PCI device, no, there isn't.

Without an IOMMU[1] you can't directly assign a PCI device to a guest
(nor is it safe).  There have been patches floating around to allow
this, but they don't maintain secure isolation.

thanks,
-chris

[1] VT-d is an Intel chipset feature, so you could certainly do it on an
AMD platform that has an AMD IOMMU.