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_MUTT autolearn=ham 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 1DE22C31E4B for ; Fri, 14 Jun 2019 15:09:02 +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 E945521537 for ; Fri, 14 Jun 2019 15:09:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="fxtm9p8v" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E945521537 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=sDdZI+M+MqiO7r2AdEEqqpzMClbWi4b+Y1LOzcDmBxg=; b=fxtm9p8v6ktEZI 7U3knJcMCrn7/84AvAV94yRCytrRe4eMRArjyfoCBjmG5jz+akLOywn6yrLCCJamqZgKTsPJhjSVf vv7mRujvdBnGxNO2bVT0OQSRgBZdnKpXCpjuXtB6hYhWr7Mk+pE9nZ3rdpbI/Iu9J/xAgO7/ucAmx l6DenS8L0XOtAtJrTVsyzQgEoldWereIdntJk5tQDK9v7qXtr7IoFYZnfnGm7PjQe5zNsy3d25syr nAc8nM1NiCSVN+Za5LtRBGnXsZYltsUdPYzZYx/0j2TBDRB9cZzH7rKcw+6/guWY/H/6nvQKKdBJF OCw4GqcU/v/AHitjl2DQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hbnp7-0006G6-7f; Fri, 14 Jun 2019 15:09:01 +0000 Received: from verein.lst.de ([213.95.11.211] helo=newverein.lst.de) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hbnp5-0006Fe-2Y for linux-arm-kernel@lists.infradead.org; Fri, 14 Jun 2019 15:09:00 +0000 Received: by newverein.lst.de (Postfix, from userid 2407) id EDC7268B05; Fri, 14 Jun 2019 17:08:27 +0200 (CEST) Date: Fri, 14 Jun 2019 17:08:27 +0200 From: 'Christoph Hellwig' To: Robin Murphy Subject: Re: [PATCH 16/16] dma-mapping: use exact allocation in dma_alloc_contiguous Message-ID: <20190614150827.GA9460@lst.de> References: <20190614134726.3827-1-hch@lst.de> <20190614134726.3827-17-hch@lst.de> <20190614145001.GB9088@lst.de> <4113cd5f-5c13-e9c7-bc5e-dcf0b60e7054@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <4113cd5f-5c13-e9c7-bc5e-dcf0b60e7054@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-20190614_080859_268837_39BCB24C X-CRM114-Status: UNSURE ( 8.94 ) X-CRM114-Notice: Please train this message. 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: Maxime Ripard , Joonas Lahtinen , "dri-devel@lists.freedesktop.org" , "linux-mm@kvack.org" , 'Christoph Hellwig' , "devel@driverdev.osuosl.org" , "linux-s390@vger.kernel.org" , "linux-rdma@vger.kernel.org" , David Airlie , "linux-media@vger.kernel.org" , Intel Linux Wireless , "intel-gfx@lists.freedesktop.org" , Maarten Lankhorst , Jani Nikula , Ian Abbott , Rodrigo Vivi , Sean Paul , "moderated list:ARM PORT" , "netdev@vger.kernel.org" , "linux-wireless@vger.kernel.org" , "linux-kernel@vger.kernel.org" , H Hartley Sweeten , "iommu@lists.linux-foundation.org" , David Laight , Daniel Vetter 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 Fri, Jun 14, 2019 at 04:05:33PM +0100, Robin Murphy wrote: > That said, I don't believe this particular patch should make any > appreciable difference - alloc_pages_exact() is still going to give back > the same base address as the rounded up over-allocation would, and > PAGE_ALIGN()ing the size passed to get_order() already seemed to be > pointless. True, we actually do get the right alignment just about anywhere. Not 100% sure about the various static pool implementations, but we can make sure if any didn't we'll do that right thing once those get consolidated. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel