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RE: [Xen-users] i7 and vt-d


  • To: <Xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: "Guido Hecken" <guido.hecken@xxxxxxxxxxxxx>
  • Date: Sat, 23 May 2009 17:36:10 +0200
  • Cc:
  • Delivery-date: Sat, 23 May 2009 08:36:58 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Thread-index: AcnbpSvn/k6nQKygS4KjNNaEbPHMFAABuD8g
  • Thread-topic: [Xen-users] i7 and vt-d

Try kernel-parameter iommu=1 in your dom0 boot-script.
something like this:

kernel /xen-3.3.1.gz console=vga dom0_mem=512M iommu=1
In older xen-versions vtd=1 did the same.
This option seems to be not so well documented...
It took me some hours to find and hopefully understand them.

Good luck,

Guido


-----Ursprüngliche Nachricht-----
Von: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] Im Auftrag von Christoph Kaminski
Gesendet: Samstag, 23. Mai 2009 14:45
An: Xen-users@xxxxxxxxxxxxxxxxxxx
Betreff: [Xen-users] i7 and vt-d

Hi!

I have a problem with i7 and vt-d. xm dmesg shows:

(XEN) I/O virtualisation disabled

but I have activated it in BIOS...

what can be the problem?

Greetz

PS: Sorry for my english

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