From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E26ACC43215 for ; Thu, 21 Nov 2019 17:26:42 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9BE1420715 for ; Thu, 21 Nov 2019 17:26:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9BE1420715 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id E22F26B0364; Thu, 21 Nov 2019 12:26:41 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id DD36F6B0366; Thu, 21 Nov 2019 12:26:41 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D10FD6B0367; Thu, 21 Nov 2019 12:26:41 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0099.hostedemail.com [216.40.44.99]) by kanga.kvack.org (Postfix) with ESMTP id BAA1A6B0364 for ; Thu, 21 Nov 2019 12:26:41 -0500 (EST) Received: from smtpin30.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id 5E4398249980 for ; Thu, 21 Nov 2019 17:26:41 +0000 (UTC) X-FDA: 76180964202.30.frame01_1d3d1cb2d0134 X-HE-Tag: frame01_1d3d1cb2d0134 X-Filterd-Recvd-Size: 1608 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by imf25.hostedemail.com (Postfix) with ESMTP for ; Thu, 21 Nov 2019 17:26:40 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 263C368BFE; Thu, 21 Nov 2019 18:26:38 +0100 (CET) Date: Thu, 21 Nov 2019 18:26:37 +0100 From: Christoph Hellwig To: Robin Murphy Cc: Christoph Hellwig , Christian Zigotzky , linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org Subject: Re: Bug 205201 - overflow of DMA mask and bus mask Message-ID: <20191121172637.GC2932@lst.de> References: <008c981e-bdd2-21a7-f5f7-c57e4850ae9a@xenosoft.de> <20190103073622.GA24323@lst.de> <71A251A5-FA06-4019-B324-7AED32F7B714@xenosoft.de> <1b0c5c21-2761-d3a3-651b-3687bb6ae694@xenosoft.de> <3504ee70-02de-049e-6402-2d530bf55a84@xenosoft.de> <46025f1b-db20-ac23-7dcd-10bc43bbb6ee@xenosoft.de> <20191105162856.GA15402@lst.de> <8b239ba6-29f3-9483-8696-ddfba2a49a49@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8b239ba6-29f3-9483-8696-ddfba2a49a49@arm.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Nov 06, 2019 at 02:09:26PM +0000, Robin Murphy wrote: > Hmm, that bus mask looks pretty wacky - are you able to figure out where > that's coming from? arch/powerpc/sysdev/fsl_pci.c:pci_dma_dev_setup_swiotlb().