Received: by 2002:a25:7ec1:0:0:0:0:0 with SMTP id z184csp3518490ybc; Thu, 21 Nov 2019 09:28:46 -0800 (PST) X-Google-Smtp-Source: APXvYqyWHFl6e0Tn10Ov7qcgGL9WFfN3Gj3NTNY6utw+7e2GFS6JoJfmgpQG4kJCH08TV4+uRLcb X-Received: by 2002:a17:906:3495:: with SMTP id g21mr15534072ejb.190.1574357326193; Thu, 21 Nov 2019 09:28:46 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1574357326; cv=none; d=google.com; s=arc-20160816; b=xPhzIGKhgT342EfqLLIRweOIbQANs9SA4f1HZadwPNqw9DBzN0l+57QpOXo1b3Xl0u zKJRbda4lJ7/8rSwgRgrtNS7ceyjZCz8uATPLizciBF1ZqGlB9BZ6oulca70P5SdJlbp SXZ6sZEdItdf/VIRq96rYlvV+iECEUUBLu3zXjpDtlZIQrbuvDiHqqBH6x0HK9Zosl8e XHA7BZ1c7nZQE07W1yALfYiGhjDV6DoEZ6eIiT1mElDCKKtftrMrH1IjeOk3F+qC3wmc eiiz2PT3BYY5Sr8+HrisKrCc12B5KDLsPdjKpJIl9lIBOPSgjReif0Bc7vdnuh97wZFw WyWg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=XTidwSgNBWmgoMGcJHQ8k0X1ndaTZ5j0ChmrrVYS+AM=; b=Do7/GbMemrGkV0jTRBhYQo2SMAIJ+EM9JduG5zkXGjaTyRPQccjgrwKLgBdvnKB/pr z5nnIKpZl43gkCyX4tTAWZnRzW0oY0wS8I/u1jiGpLC7mCGznhoaPTYyoqb3yZipSbw1 PaZtP+Pn3G4X/+d+5uwjp7AMk91tGEofUfA3R1EoRsN467hQ84VWf+y4wr8XFT/nJUaw fC99Bwyn4IeeS9XoufCjd3osrLItqM2QyNE21LLkYJeAMl8Jihj/Du41fl98E9GV9sVJ syrhw4xoKdGdJmqGHaYGoT/p48PGHSSUpqvIl+Ewrp8Z5YosLHQGIJtKx57KK+eMv++V k0zw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id ks15si2306986ejb.133.2019.11.21.09.28.21; Thu, 21 Nov 2019 09:28:46 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726623AbfKUR0l (ORCPT + 99 others); Thu, 21 Nov 2019 12:26:41 -0500 Received: from verein.lst.de ([213.95.11.211]:47423 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726279AbfKUR0l (ORCPT ); Thu, 21 Nov 2019 12:26:41 -0500 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) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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().