On Monday 18 April 2011, Marek Szyprowski wrote: > From: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx> > > This patch adds new videobuf2 memory allocator dedicated to devices that > supports IOMMU DMA mappings. A device with IOMMU module and a driver > with include/iommu.h compatible interface is required. This allocator > aquires memory with standard alloc_page() call and doesn't suffer from > memory fragmentation issues. The allocator support following page sizes: > 4KiB, 64KiB, 1MiB and 16MiB to reduce iommu translation overhead. 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? Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
