From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Wang2 Subject: Re: [PATCH] AMD IOMMU: Parse IVRS table early to prevent iommu_enabled from being disabled Date: Wed, 28 Oct 2009 18:46:23 +0100 Message-ID: <200910281846.24292.wei.wang2@amd.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org On Wednesday 28 October 2009 18:30:31 Keir Fraser wrote: > On 28/10/2009 16:31, "Wei Wang2" wrote: > > This patch moves IVRS table parsing functions into an early position, > > which prevent iommu_enabled from being disabled by failure dmar table > > detection. > > Not nice. See if c/s 20381 fixes your problem. It's justa cleanup of some > VT-d code which should avoid the problem altogether. > > -- Keir Thanks, I have not checked 20381 while creating this patch. I will test it again and send something new if necessary. -Wei