From mboxrd@z Thu Jan 1 00:00:00 1970 From: eugeniy.paltsev@synopsys.com (Eugeniy Paltsev) Date: Fri, 14 Dec 2018 12:12:00 +0000 Subject: [PATCH 1/2] dma-mapping: zero memory returned from dma_alloc_* In-Reply-To: <20181214082515.14835-2-hch@lst.de> References: <20181214082515.14835-1-hch@lst.de> <20181214082515.14835-2-hch@lst.de> List-ID: Message-ID: <1544789518.3270.34.camel@synopsys.com> To: linux-snps-arc@lists.infradead.org Hi Christoph, do you have any public git repository with all your dma changes? I want to test them for ARC. Thanks. On Fri, 2018-12-14@09:25 +0100, Christoph Hellwig wrote: > If we want to map memory from the DMA allocator to userspace it must be > zeroed at allocation time to prevent stale data leaks. We already do > this on most common architectures, but some architectures don't do this > yet, fix them up, either by passing GFP_ZERO when we use the normal page > allocator or doing a manual memset otherwise. > > Signed-off-by: Christoph Hellwig > --- -- Eugeniy Paltsev