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Re: [Xen-devel] Option iommu=1 causes hypervisor to start debugger

from [Keir Fraser] [Permanent Link][Original]
To: Alexia Benington <alexbenington@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Option iommu=1 causes hypervisor to start debugger
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Tue, 03 Feb 2009 08:06:48 +0000
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It's needed for passing through physical devices to HVM guests.

 -- Keir

On 02/02/2009 23:42, "Alexia Benington" <alexbenington@xxxxxxxxx> wrote:

> If I do not include the iommu option, I/O virtualisation is disabled.
> I never thought that iommu is a necessary prerequisite for I/O virt,
> or am I mistaken?
> 
> -Alex
> 
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