From mboxrd@z Thu Jan 1 00:00:00 1970 From: ewheeler Subject: Re: KVM + VTd on a DX58SO reports No IOMMU found. Date: Tue, 29 Jun 2010 07:53:01 -0700 Message-ID: <1277823181.2736.1.camel@geektop> References: <1277786951.14444.13.camel@geektop> <4C29BFF2.3030501@redhat.com> <1277820677.19284.1.camel@geektop> <4C2A07DC.8010202@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org, Chris Wright To: Avi Kivity Return-path: Received: from caiajhbdccac.dreamhost.com ([208.97.132.202]:58747 "EHLO homiemail-a7.g.dreamhost.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751920Ab0F2OxV (ORCPT ); Tue, 29 Jun 2010 10:53:21 -0400 In-Reply-To: <4C2A07DC.8010202@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Tue, 2010-06-29 at 17:49 +0300, Avi Kivity wrote: > On 06/29/2010 05:11 PM, ewheeler wrote: > > On Tue, 2010-06-29 at 12:42 +0300, Avi Kivity wrote: > > > >> On 06/29/2010 07:49 AM, ewheeler wrote: > >> > >>> KVM reports that I > >>> do not have an IOMMU, however, dmesg reports both DMAR and IOMMU. In > >>> addition, I know that this board supports VT-d. > >>> > >>> Specific details are available here: > >>> http://pastebin.com/dp1tb5bf > >>> > >> Does your kernel .config actually include iommu support? > > CONFIG_DMAR. > /boot/config-2.6.35-6-server:# CONFIG_DMAR is not set Sure enough, it is disabled. I'll build my own and see what happens. Thanks! -Eric