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 15:23:36 +0100 Message-ID: <20130326142336.GE13035@8bytes.org> References: <20130326094930.GD13035@8bytes.org> 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, thanks for the information. On Tue, Mar 26, 2013 at 01:48:38PM +0100, Andreas Degert wrote: > seems to be this (additionaly I have appended the full dump): > > device: 00:00.2 cap: 0040 seg: 0 flags: fe info 1300 > mmio-addr: 00000000feb80000 > DEV_SELECT_RANGE_START devid: 00:01.0 flags: 00 > DEV_RANGE_END devid: ff:1f.6 > DEV_ALIAS_RANGE devid: 03:00.0 flags: 00 devid_to: 00:14.4 > DEV_RANGE_END devid: 04:1f.7 > DEV_SPECIAL(HPET[0]) devid: 00:14.0 > DEV_SPECIAL(IOAPIC[5]) devid: 00:14.0 That looks good so far. You have two sound devices: One in the GPU at 00:01.1 One in the SB at 00:14.2 Both are covered by the above IVRS entries. Does a unpatched kernel (no rt patch) work for you, so can you try if it also happens with 3.8.4? So you see IO_PAGE_FAULTS when trying to use the soundcard? Thanks, Joerg