From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keir Fraser Subject: Re: Option iommu=1 causes hypervisor to start debugger Date: Tue, 03 Feb 2009 08:06:48 +0000 Message-ID: References: <7969168f0902021542w3cf16d47u314ebed5fd595b7b@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <7969168f0902021542w3cf16d47u314ebed5fd595b7b@mail.gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Alexia Benington , xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org It's needed for passing through physical devices to HVM guests. -- Keir On 02/02/2009 23:42, "Alexia Benington" 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 > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel