On Fri, Apr 13, 2012 at 04:05:50PM +0200, Marek Szyprowski wrote: > This patch changes dma-mapping subsystem to use generic vmalloc areas > for all consistent dma allocations. This increases the total size limit > of the consistent allocations and removes platform hacks and a lot of > duplicated code. NAK. I don't think you appreciate the contexts from which the dma coherent code can be called from, and the reason why we pre-allocate the page tables (so that IRQ-based allocations work.) The vmalloc region doesn't allow that because page tables are allocated using GFP_KERNEL not GFP_ATOMIC. Sorry. -- 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>