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RE: [Xen-users] Problems assigning PCI device to HVM

To: "Daniel Kao" <dkao@xxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Problems assigning PCI device to HVM
From: "James Dingwall" <james.dingwall@xxxxxxxxxx>
Date: Fri, 16 May 2008 09:29:34 +0100
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Thread-topic: [Xen-users] Problems assigning PCI device to HVM

> AFAIK, the Intel G33 does not support the VT-d extensions for 
> Virtualization.

>From what I can see the G33 codename was bearlake 
>(http://en.wikipedia.org/wiki/List_of_Intel_chipsets) and I think it was this 
>chipset that introduced VT-d.  However, it looks like it is only the Q series 
>of this chipset which supports VT-d according to 
>http://sg.vr-zone.com/?i=4013.  If this is the case how can I make my PCI 
>device available in the HVM or will I only be able to export to a pv domU?


James Dingwall wrote:
> Hi,
> I'm having some problems assigning a PCI device to an OpenBSD HVM.  The
> HVM will boot without the pci = line in the configuration but as soon as
> it is added I get:
> # xm create hvm_obsd
> Using config file "/etc/xen/hvm_obsd".
> Error: Fail to assign device(1:0.0): maybe VT-d is not enabled, or the
> device is not exist, or it has already been assigned to other domain
> My system is running Gentoo using the 2.6.21-xen kernel and Xen 3.2.1.
> I believe that the hardware I am using should support VT-d - a Gigabyte
> GA-G33M-S2 (i.e. Intel G33 chipset) and a Core 2 Duo E8200 processor.  I
> am also confident that the PCI device has been seized by the pciback
> driver:
Daniel Kao, Übermind
Seattle, WA

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