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,URIBL_BLOCKED,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 25B2DC43141 for ; Thu, 21 Nov 2019 16:02:28 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EF1E720692 for ; Thu, 21 Nov 2019 16:02:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EF1E720692 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id AF45C87FE5; Thu, 21 Nov 2019 16:02:27 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3D80LBTNul4k; Thu, 21 Nov 2019 16:02:25 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by whitealder.osuosl.org (Postfix) with ESMTP id 0C04987FBE; Thu, 21 Nov 2019 16:02:25 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id D7E9BC1DD8; Thu, 21 Nov 2019 16:02:24 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 94EAFC18DA for ; Thu, 21 Nov 2019 16:02:23 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 7CE048885F for ; Thu, 21 Nov 2019 16:02:23 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 85XmxKyzht5U for ; Thu, 21 Nov 2019 16:02:23 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by hemlock.osuosl.org (Postfix) with ESMTPS id D9D5888858 for ; Thu, 21 Nov 2019 16:02:22 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id D87F268BFE; Thu, 21 Nov 2019 17:02:17 +0100 (CET) Date: Thu, 21 Nov 2019 17:02:17 +0100 From: Christoph Hellwig To: Robin Murphy Subject: Re: [PATCH v2] dma-mapping: treat dev->bus_dma_mask as a DMA limit Message-ID: <20191121160217.GA1583@lst.de> References: <20191121092646.8449-1-nsaenzjulienne@suse.de> <20191121152457.GA525@lst.de> <20191121152650.GA651@lst.de> <70359d2a-10c6-09c7-a857-805085affb0a@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <70359d2a-10c6-09c7-a857-805085affb0a@arm.com> User-Agent: Mutt/1.5.17 (2007-11-01) Cc: Catalin Marinas , Peter Zijlstra , Benjamin Herrenschmidt , Dave Hansen , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, Paul Mackerras , Hanjun Guo , Frank Rowand , Christoph Hellwig , "H. Peter Anvin" , Paul Burton , Michael Ellerman , x86@kernel.org, linux-acpi@vger.kernel.org, Ingo Molnar , James Hogan , Len Brown , devicetree@vger.kernel.org, Will Deacon , Rob Herring , Borislav Petkov , Andy Lutomirski , Bjorn Helgaas , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Jens Axboe , "Rafael J. Wysocki" , linux-mips@vger.kernel.org, Ralf Baechle , iommu@lists.linux-foundation.org, Sudeep Holla , linuxppc-dev@lists.ozlabs.org, Nicolas Saenz Julienne X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Thu, Nov 21, 2019 at 03:55:39PM +0000, Robin Murphy wrote: > Hmm, there's no functional dependency though, is there? AFAICS it's > essentially just a context conflict. Is it worth simply dropping (or > postponing) the local renaming in __dma_direct_optimal_gfp_mask(), or > perhaps even cross-merging arm64/for-next/zone-dma into dma/for-next? I would have no problem with pulling it in. I'd kinda hate creating the conflict, though. So if the arm64 maintainers are fine with it I'll pull it in, especially if I get an ACK from Robin. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu