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=-2.4 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=unavailable 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 6C900C43387 for ; Fri, 14 Dec 2018 18:35:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C5094204FD for ; Fri, 14 Dec 2018 18:35:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730521AbeLNSfM (ORCPT ); Fri, 14 Dec 2018 13:35:12 -0500 Received: from verein.lst.de ([213.95.11.211]:49165 "EHLO newverein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728388AbeLNSfM (ORCPT ); Fri, 14 Dec 2018 13:35:12 -0500 Received: by newverein.lst.de (Postfix, from userid 2407) id EA32468DF1; Fri, 14 Dec 2018 19:35:09 +0100 (CET) Date: Fri, 14 Dec 2018 19:35:09 +0100 From: Christoph Hellwig To: Sam Ravnborg Cc: Christoph Hellwig , iommu@lists.linux-foundation.org, Michal Simek , Ashutosh Dixit , linux-alpha@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-c6x-dev@linux-c6x.org, linux-m68k@lists.linux-m68k.org, openrisc@lists.librecores.org, linux-parisc@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] dma-mapping: zero memory returned from dma_alloc_* Message-ID: <20181214183509.GA5247@lst.de> References: <20181214082515.14835-1-hch@lst.de> <20181214082515.14835-2-hch@lst.de> <20181214181056.GA17941@ravnborg.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181214181056.GA17941@ravnborg.org> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org On Fri, Dec 14, 2018 at 07:10:56PM +0100, Sam Ravnborg wrote: > Hi Christoph, > > I stumbled upon this one: > > #define __get_dma_pages(gfp_mask, order) \ > __get_free_pages((gfp_mask) | GFP_DMA, (order)) This isn't directly related to the dma mapping, but another place that hides GFP_DMA allocations. So no need for the treatment, but we really should kill this obsfucating wrapper..