On Wed, 6 Jul 2011, Russell King - ARM Linux wrote: > Another issue is that when a platform has restricted DMA regions, > they typically don't fall into the highmem zone. As the dmabounce > code allocates from the DMA coherent allocator to provide it with > guaranteed DMA-able memory, that would be rather inconvenient. Do we encounter this in practice i.e. do those platforms requiring large contiguous allocations motivating this work have such DMA restrictions? Nicolas -- 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>