From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from 8bytes.org ([81.169.241.247]:55785 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934817AbbI2PVD (ORCPT ); Tue, 29 Sep 2015 11:21:03 -0400 Date: Tue, 29 Sep 2015 17:21:01 +0200 From: Joerg Roedel To: Andreas Hartmann Cc: Mikulas Patocka , iommu@lists.linux-foundation.org, Leo Duran , Christoph Hellwig , device-mapper development , Milan Broz , Jens Axboe , linux-pci , Linus Torvalds Subject: Re: [dm-devel] AMD-Vi IO_PAGE_FAULTs and ata3.00: failed command: READ FPDMA QUEUED errors since Linux 4.0 Message-ID: <20150929152100.GL3036@8bytes.org> References: <55B7BEA2.30205@01019freenet.de> <20150728175054.GB24782@redhat.com> <55B7D054.4070308@maya.org> <20150728192908.GA25264@redhat.com> <55BCD5A7.2080708@maya.org> <55BE1D5E.6020709@maya.org> <55FE5740.2060701@maya.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <55FE5740.2060701@maya.org> Sender: linux-pci-owner@vger.kernel.org List-ID: On Sun, Sep 20, 2015 at 08:50:40AM +0200, Andreas Hartmann wrote: > > I would submit this bug to maintainers of AMD-Vi. They understand the > > hardware, so they should tell why do large I/O requests result in > > IO_PAGE_FAULTs. > > > > It is probably bug either in AMD-Vi driver or in hardware. > > Until now, I didn't hear anything from the maintainers of AMD-Vi. What do you mean by this? I've been commenting on this issue in the past and I thought we agreed that this is no issue of the IOMMU driver. It it were, bisection should lead to a commit that breaks it, but there are no commits between v3.18 and v3.19 in the AMD IOMMU driver touching the DMA-API path. Joerg