[PATCH 4/7] v4l: videobuf2: add IOMMU based DMA memory allocator

On Tue, Apr 19, 2011 at 11:02:34AM +0200, Marek Szyprowski wrote:

On Monday, April 18, 2011 4:16 PM Arnd Bergmann wrote:

quoted

My feeling is that this is not the right abstraction. Why can't you
just implement the regular dma-mapping.h interfaces for your IOMMU
so that the videobuf code can use the existing allocators?

I'm not really sure which existing videobuf2 allocators might transparently
support IOMMU interface yet

Do you think that all iommu operations can be hidden behind dma_map_single 
and dma_unmap_single?

That is one of the intentions of the DMA API.