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=-2.7 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT 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 721C8C6786C for ; Fri, 14 Dec 2018 08:25:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2E3D52086D for ; Fri, 14 Dec 2018 08:25:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="XsgLx6nz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2E3D52086D 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-parisc-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726634AbeLNIZV (ORCPT ); Fri, 14 Dec 2018 03:25:21 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:47584 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726533AbeLNIZV (ORCPT ); Fri, 14 Dec 2018 03:25:21 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=jE5kVpdlADftxEtvgMXzvTMgshsdiNRl9dZj1a7poJs=; b=XsgLx6nz6TJ8u0MUvX4EHrOUf yhIMJf4w/JUDi7NtOT4PsVvlH7JlKPqrfzA+alKjbmM9vKqSzVMfAAzq6yizJvLcXM9mJ5BlAtAv/ tv4elxRLTowl3HS3G709WDZpVJqRH9v+yfl7Zpj2L/Jat1Zkj8ROZlhe3BTybedqxdztOq+jLCeAu c9TUYDPeK3kQZvMer2DkRHyrtLo8Dp37iKT7JIqGcgLNd7joDCDpfudSHE74H1sABgKQh7feu9E5b 4QeFS58zw/0l3pkYUOrC4jTvfeRYA/rgC9KeC4R+FwR/jG1NnQ+ESFNKp8tfY7znRk+JfFre8EVqG TpQHWVo2w==; Received: from 089144198147.atnat0007.highway.a1.net ([89.144.198.147] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1gXimb-0004l7-RB; Fri, 14 Dec 2018 08:25:18 +0000 From: Christoph Hellwig To: iommu@lists.linux-foundation.org Cc: 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: ensure dma_alloc_coherent always returns zeroed memory Date: Fri, 14 Dec 2018 09:25:13 +0100 Message-Id: <20181214082515.14835-1-hch@lst.de> X-Mailer: git-send-email 2.19.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org For security reasons we already returned zeroed memory from dma_alloc_coherent on most common platforms, but some implementation missed out. Make sure we provide a consistent behavior.