From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christian Tramnitz <chris.ace@gmx.net>
Subject: Re: No VT-d with Xen 3.3/3.4rc3 on Intel-Board DQ45CB
Date: Mon, 27 Apr 2009 16:51:48 +0200
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Tim Kaufmann wrote:
> As I wrote: I cannot boot with iommu=1 because the system freezes.

Sorry I should have paid more attention on the actual text and not just 
to the topic.
Have you tried any of the "no-" params yet (no-snoop, no-qinval, 
no-intremap)?

It could also be related to powersaving, could you disable (xen-)cpuidle 
for testing?


Best regards,
    Christian