From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: Re: soundcard (dma) stopped working with commit 27c2127 (x86/amd-iommu: Use only per-device dma_ops) Date: Tue, 26 Mar 2013 10:49:30 +0100 Message-ID: <20130326094930.GD13035@8bytes.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Andreas Degert Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: iommu@lists.linux-foundation.org Hi Andreas, On Tue, Mar 26, 2013 at 08:37:02AM +0100, Andreas Degert wrote: > Does anyone have some advice for further debugging? Can you please boot with amd_iommu_dump on the kernel command line and send dmesg after boot? This will print the parsing output of the IVRS table to dmesg which will help debugging this problem. Also, can you share what mainboard you have? Thanks, Joerg