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[Xen-devel] Re: No VT-d with Xen 3.3/3.4rc3 on Intel-Board DQ45CB

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Subject: [Xen-devel] Re: No VT-d with Xen 3.3/3.4rc3 on Intel-Board DQ45CB
From: Christian Tramnitz <chris.ace@xxxxxxx>
Date: Mon, 27 Apr 2009 12:41:00 +0200
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So what is your actual problem then?

> (XEN) I/O virtualisation enabled
This means VT-d is enabled.

If you are wondering about:
> (XEN) I/O virtualisation for PV guests disabled
You may want to have a look at iommu=pv if that is what you need...

Best regards,

Tim Kaufmann wrote:

my system: Intel DQ45CB with latest BIOS (0079 as of April 6th 2009) and VT-d enabled, Core 2 Quad Q9550 (E0), 8 GB RAM.

Tested with OpenSuse 11.1, packaged Kernel/Xen 3.3 and kernel opts "iommu=1", "iommu=1 msi=1", "dom0_mem=1024M iommu=1", "dom0_mem=1024M iommu=1 msi=1". System freezes on boot, last messages displayed are

(XEN) I/O virtualisation enabled
(XEN) I/O virtualisation for PV guests disabled

Installed Debian Lenny and compiled / Xen 3.4rc3 - same result as above.

I'd like to help debugging this, but I'd need someone to help me setting up Serial-over-LAN with one of my other computers (Ubuntu 8.04 LTS, XP, Mac OS X 10.5).


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