From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@lst.de>
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>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <linux-snps-arc-bounces+gla-linux-snps-arc=m.gmane.org@lists.infradead.org>
List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-snps-arc>,
 <mailto:linux-snps-arc-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-snps-arc/>
List-Post: <mailto:linux-snps-arc@lists.infradead.org>
List-Help: <mailto:linux-snps-arc-request@lists.infradead.org?subject=help>
List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-snps-arc>,
 <mailto:linux-snps-arc-request@lists.infradead.org?subject=subscribe>
Sender: "linux-snps-arc" <linux-snps-arc-bounces@lists.infradead.org>
Errors-To: linux-snps-arc-bounces+gla-linux-snps-arc=m.gmane.org@lists.infradead.org
To: iommu@lists.linux-foundation.org
Cc: linux-s390@vger.kernel.org, Michal Simek <monstr@monstr.eu>, linux-c6x-dev@linux-c6x.org, linux-parisc@vger.kernel.org, linux-xtensa@linux-xtensa.org, linux-kernel@vger.kernel.org, Ashutosh Dixit <ashutosh.dixit@intel.com>, linux-m68k@lists.linux-m68k.org, openrisc@lists.librecores.org, linux-alpha@vger.kernel.org, sparclinux@vger.kernel.org, linux-snps-arc@lists.infradead.org
List-Id: iommu@lists.linux-foundation.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.