On Mon, 2012-03-19 at 14:16 +0200, Avi Kivity wrote: > > Afaik we do not use dma engines for memory migration. > > We don't, but I think we should. ISTR we (the community) had this discussion once. I also seem to remember the general consensus being that DMA engines would mostly likely not be worth the effort, although I can't really recall the specifics. Esp. for 4k pages the setup of the offload will likely be more expensive than actually doing the memcpy. -- 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