From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: Re: AMD-Vi regression with PCIe/PCI bridges in 4.4 Date: Mon, 4 Apr 2016 12:51:46 +0200 Message-ID: <20160404105146.GD24141@suse.de> References: <5700BF69.2080102@ladisch.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <5700BF69.2080102-P6GI/4k7KOmELgA04lAiVw@public.gmane.org> 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: Clemens Ladisch Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: iommu@lists.linux-foundation.org Hi Clemens, On Sun, Apr 03, 2016 at 08:59:53AM +0200, Clemens Ladisch wrote: > there are several reports of Xonar PCIe sound cards failing to work in > kernel 4.4 (including 4.4.5): > > https://bugzilla.redhat.com/show_bug.cgi?id=1313790 > https://bugzilla.kernel.org/show_bug.cgi?id=111711 > https://bbs.archlinux.org/viewtopic.php?pid=1601338#p1601338 > > They show error messages like this: > > AMD-Vi: Event logged [IO_PAGE_FAULT device=03:00.0 domain=0x0000 address=0x000000000020cf00 flags=0x0070] > > All these cards use a PCI chip, with different PCIe bridges (ASM1083, > PEX8112, PEX8111).a > > It probably matters that "03" is the PCI bus, but that device "00" does > not exist. I have seen that before, can you please boot with 'amd_iommu_dump' on the kernel command line and send me dmesg after boot? Thanks a lot, Joerg