From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout2.freenet.de ([195.4.92.92]:39317 "EHLO mout2.freenet.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754342AbbJHTxt (ORCPT ); Thu, 8 Oct 2015 15:53:49 -0400 Subject: Re: [dm-devel] AMD-Vi IO_PAGE_FAULTs and ata3.00: failed command: READ FPDMA QUEUED errors since Linux 4.0 To: Joerg Roedel References: <55FE5740.2060701@maya.org> <20150929152100.GL3036@8bytes.org> <20150929162042.GR3036@8bytes.org> <560BF73F.8000008@maya.org> <20151006101356.GE12506@8bytes.org> <56141507.7040103@maya.org> <20151007154005.GH28811@8bytes.org> <56155028.7060906@maya.org> <20151008173007.GL28811@8bytes.org> <5616BCF4.10104@maya.org> Cc: Mikulas Patocka , iommu@lists.linux-foundation.org, Leo Duran , Christoph Hellwig , device-mapper development , Milan Broz , Jens Axboe , linux-pci , Linus Torvalds From: Andreas Hartmann Message-ID: <5616C850.2000906@maya.org> Date: Thu, 8 Oct 2015 21:47:28 +0200 MIME-Version: 1.0 In-Reply-To: <5616BCF4.10104@maya.org> Content-Type: multipart/mixed; boundary="------------030809040104060803000702" Sender: linux-pci-owner@vger.kernel.org List-ID: This is a multi-part message in MIME format. --------------030809040104060803000702 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit On 10/08/2015 at 08:59 PM, Andreas Hartmann wrote: > On 10/08/2015 at 07:30 PM Joerg Roedel wrote: >> On Wed, Oct 07, 2015 at 07:02:32PM +0200, Andreas Hartmann wrote: >>> Binding the device to vfio isn't a problem (it's done before the vm is >>> started). The problem occurs during start of qemu-system-x86_64 (2.3.0). >>> >>> The attached dmesg.out doesn't show the trace, but the desired iommu dump. >>> >>>> Also, which device are you trying to attach to the guest (pci >>>> bus/device/function)? >>> >>> See attached ath9k.device. >> >> Hmm, can you also test this again with the v4.3-rc4 please? The device >> you are attaching has its own group and no aliases, so I really can't >> see how the trace could happen, and I can't reproduce it here either. > > Unchanged - this time hard locked machine and no trace at all because of > data loss after reboot :-(. > > Btw: Linux 4.2 doesn't show this problem. > > Nevertheless I'll try to get a trace - maybe I'm lucky and the machine > doesn't lock up completely another time :-). Got it. I attached the complete oops and the output of objdump. Kernel was linux 4.3-rc4 This time, the oops was caused by the second PCI card I'm passing through to another VM (the ath9k card worked fine this time - chance?). I added the lspci output to the attached file, too. 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