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 07:11:17 -0700 Message-ID: <1277820677.19284.1.camel@geektop> References: <1277786951.14444.13.camel@geektop> <4C29BFF2.3030501@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 caiajhbdccah.dreamhost.com ([208.97.132.207]:34426 "EHLO homiemail-a37.g.dreamhost.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754919Ab0F2OLT (ORCPT ); Tue, 29 Jun 2010 10:11:19 -0400 In-Reply-To: <4C29BFF2.3030501@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: 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? > Is it a config other than any of these? Which one supports VT-d? root@ubuntu:/boot# grep IOMMU config-2.6.35-6-server CONFIG_GART_IOMMU=y CONFIG_CALGARY_IOMMU=y CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT=y CONFIG_AMD_IOMMU=y CONFIG_AMD_IOMMU_STATS=y CONFIG_IOMMU_HELPER=y CONFIG_IOMMU_API=y # CONFIG_IOMMU_DEBUG is not set # CONFIG_IOMMU_STRESS is not set -Eric