From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: bogus motherboard? IOMMU does not work Date: Fri, 2 Jul 2010 12:05:28 -0400 Message-ID: <20100702160528.GD5112@phenom.dumpdata.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Csillag =?iso-8859-1?Q?Krist=F3f?= Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Fri, Jul 02, 2010 at 04:03:04PM +0200, Csillag Krist=F3f wrote: > Hi all, >=20 > I would like to get my system to work with IOMMU. You can't with that motherboard. >=20 > (The long-term goal is VGA passthru.) >=20 > System is as follows: >=20 > CPU: Core 2 Duo E6600 > MB: Foxconn G9657MA-8EKRS2H (w. latest bios: 631F1P61) > Virtualization support is enabled in BIOS. (These is only one option.) >=20 > Hypervisor: xen 4.0.0 from Debian, AMD64 > Xen config: iommu=3Dverbose > output of xen dmesg is attached. >=20 > HVM domains work (lasd tried with xen 3.2), but IOMMU is disabled, > according to xen dmesg. >=20 > What can I do to increase the chances of getting this to work? Get a new motherboard that has the VT-d chipset. This is not a software feature, but a chipset on the board. Look at this list: http://en.wikipedia.org/wiki/List_of_Intel_chipsets and look for VT-d.