Hello, On Monday, June 27, 2011 3:22 PM Arnd Bergmann wrote: > On Monday 27 June 2011, Marek Szyprowski wrote: > > > On a related note, do you plan to make the CMA work use this > > > transparently, or do you want to have a DMA_ATTR_LARGE or > > > DMA_ATTR_CONTIGUOUS for CMA? > > > > IMHO it will be better to hide the CMA from the drivers. Memory allocated > > from CMA doesn't really differ from the one allocated by > dma_alloc_coherent() > > (which internally use alloc_pages()), so I really see no reason for > adding > > additional attribute for it. > > Ok, fair enough. On a semi-related topic, IIRC we still need to make sure > that dma_alloc_coherent() pages are unmapped from the linear mapping. I > hope > this is independent of both CMA and this patch. Right, that's one more big item that is still on the TODO list. Best regards -- Marek Szyprowski Samsung Poland R&D Center -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>