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Re: [Xen-users] Intel VT-d Support

To: Rudi Ahlers <Rudi@xxxxxxxxxxx>
Subject: Re: [Xen-users] Intel VT-d Support
From: Igor Chubin <igor@xxxxxxx>
Date: Wed, 5 Mar 2008 12:41:26 +0200
Cc: Stephan Seitz <s.seitz@xxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
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...
> What's the difference between vt & vtd ?


To say short VT is CPU virtualization and VT-d is I/O virtualization.
Take a look at the page [1] for more information.


Be means of VT-d you can try to make PCI-passthrough of some HW 
(e.g. network card) into HVM domain. 
This is impossible without VT-d (you can do PCI passthrough into
PV-domains only).

[1] http://en.wikipedia.org/wiki/IOMMU

>
> -- 
>
> Kind Regards
> Rudi Ahlers
> CEO, SoftDux
>
> Web:   http://www.SoftDux.com
> Check out my technical blog, http://blog.softdux.com for Linux or other 
> technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting 
> stugg
>

-- 
WBR, i.m.chubin


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