[PATCH 1/2] dma-mapping: zero memory returned from dma_alloc_*
Eugeniy Paltsev
eugeniy.paltsev at synopsys.com
Fri Dec 14 12:12:00 UTC 2018
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 at 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 <hch at lst.de>
> ---
--
Eugeniy Paltsev
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