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 29F81C432C0 for ; Thu, 21 Nov 2019 16:02:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 01C9920709 for ; Thu, 21 Nov 2019 16:02:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726689AbfKUQCX (ORCPT ); Thu, 21 Nov 2019 11:02:23 -0500 Received: from verein.lst.de ([213.95.11.211]:46911 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726293AbfKUQCX (ORCPT ); Thu, 21 Nov 2019 11:02:23 -0500 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 Cc: Christoph Hellwig , Nicolas Saenz Julienne , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Bjorn Helgaas , Lorenzo Pieralisi , Hanjun Guo , Sudeep Holla , Jens Axboe , Joerg Roedel , Rob Herring , Frank Rowand , Marek Szyprowski , Ralf Baechle , Paul Burton , James Hogan , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , x86@kernel.org, "Rafael J. Wysocki" , Len Brown , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ide@vger.kernel.org, iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, Catalin Marinas , Will Deacon 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-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <70359d2a-10c6-09c7-a857-805085affb0a@arm.com> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org 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. 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 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 CA1B1C43141 for ; Thu, 21 Nov 2019 16:04:26 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 830AC20643 for ; Thu, 21 Nov 2019 16:04:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 830AC20643 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 47Jks33zdVzDr9v for ; Fri, 22 Nov 2019 03:04:23 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lst.de (client-ip=213.95.11.211; helo=verein.lst.de; envelope-from=hch@lst.de; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=lst.de Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 47Jkpm08K5zDqWp for ; Fri, 22 Nov 2019 03:02:23 +1100 (AEDT) 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-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <70359d2a-10c6-09c7-a857-805085affb0a@arm.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Catalin Marinas , Peter Zijlstra , 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 , Marek Szyprowski , Lorenzo Pieralisi , "H. Peter Anvin" , Paul Burton , Joerg Roedel , 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 Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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. 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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,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 3651CC432C0 for ; Thu, 21 Nov 2019 16:02:26 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 0C79D206CC for ; Thu, 21 Nov 2019 16:02:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="GJrFG3hL" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0C79D206CC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=QD1yCZQMNMV4kbbglMCoCY8UpS6ySCnwE21lBwY1ZvY=; b=GJrFG3hLzv4Yu4 Dik5ExmVOKHXEgaAMRtzjYvbQQBJLL8uUKhTKGXVWQ9d0hgyU9eM6GJf1TGhTCFkrP9CsB2p0f21b vhQspvyhvAxDL3/fePAnfTJpW5107JbfdMUq8Ie6CD32J6qnX77I8euzrIu+YmEAKbr+Htz+7LyN4 h8O7fznigBkyWWkD+34OT71mfaJDsDABlV9JqMGNE6VsP5MNujH00OAGdv7TWSSfe+qdIvpEHD9QS igyIVYqMFe35OwoNFBvQB9uL3q75JUijnQ1FJwBGBpvld2ZjkOWL0QzHstoXKCTpzgeavV+wGAKJw E8CDdBCvCCbRulE/f0Qg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iXouW-0003Cl-NM; Thu, 21 Nov 2019 16:02:24 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iXouU-0003CQ-9k for linux-arm-kernel@lists.infradead.org; Thu, 21 Nov 2019 16:02:23 +0000 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) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191121_080222_491570_8FCFB2A1 X-CRM114-Status: GOOD ( 10.60 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 , Marek Szyprowski , Lorenzo Pieralisi , "H. Peter Anvin" , Paul Burton , Michael Ellerman , Joerg Roedel , 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel