[PATCH 1/2] dma-mapping: zero memory returned from dma_alloc_*

Christoph Hellwig hch at lst.de
Fri Dec 14 18:35:09 UTC 2018


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..


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