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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,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 5A623C606C7 for ; Mon, 8 Jul 2019 18:44:06 +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 32DCE216FD for ; Mon, 8 Jul 2019 18:44:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="JZYA/Zew" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 32DCE216FD 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=+Av8qn9Qr6QIZ44eDDFSm6JEp75V2K7Tf4bSzbueMvc=; b=JZYA/ZewOV4xQX dgd880XEWLJNn6YMmcyfCARKDWThvTwV6UO53rlR1ZAi2VPShkYravLMtYSnsfPhYurs08T7TzK5l 3VA7IIOEi+KdwVopJa2vNFOvKleoZNUTFWGMGr//Wm5bMtGGasrPXRewxOoI5Rso+JZhPNxsXAazV r65VVl+jUo1WCC9GTXTmzkMJgGU2vEJgCJqsBwLkoMYBRKHRwcqmMGK+YIBYoKJUTIyWCFvn8u3mu GjiYBLvswkLlLpWU0xjUUYM6z0i/APmLzv9aEkN+MQEr/ULkNQ3Fd6i/oAN2YPLD1p8y/jC0OYwOE wCxYXCVmlEqnVyi3amdQ==; 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 1hkYcK-0005qo-IC; Mon, 08 Jul 2019 18:44:00 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hkYcI-0005p1-3d for linux-arm-kernel@lists.infradead.org; Mon, 08 Jul 2019 18:43:59 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 8C7F2227A81; Mon, 8 Jul 2019 20:43:51 +0200 (CEST) Date: Mon, 8 Jul 2019 20:43:51 +0200 From: Christoph Hellwig To: Arend Van Spriel Subject: Re: use exact allocation for dma coherent memory Message-ID: <20190708184351.GA12877@lst.de> References: <20190614134726.3827-1-hch@lst.de> <20190701084833.GA22927@lst.de> <74eb9d99-6aa6-d1ad-e66d-6cc9c496b2f3@broadcom.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <74eb9d99-6aa6-d1ad-e66d-6cc9c496b2f3@broadcom.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-20190708_114358_307032_7E9C0226 X-CRM114-Status: GOOD ( 10.35 ) 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, 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 Tue, Jul 02, 2019 at 11:48:44AM +0200, Arend Van Spriel wrote: > You made me look ;-) Actually not touching my drivers so I'm off the hook. > However, I was wondering if drivers could know so I decided to look into > the DMA-API.txt documentation which currently states: > > """ > The flag parameter (dma_alloc_coherent() only) allows the caller to > specify the ``GFP_`` flags (see kmalloc()) for the allocation (the > implementation may choose to ignore flags that affect the location of > the returned memory, like GFP_DMA). > """ > > I do expect you are going to change that description as well now that you > are going to issue a warning on __GFP_COMP. Maybe include that in patch > 15/16 where you introduce that warning. Yes, that description needs an updated, even without this series. I'll make sure it is more clear. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel