On Thu, 26 Aug 2010 13:06:28 +0900 Minchan Kim <minchan.kim@xxxxxxxxx> wrote: > On Thu, Aug 26, 2010 at 12:44 PM, KAMEZAWA Hiroyuki > <kamezawa.hiroyu@xxxxxxxxxxxxxx> wrote: > > On Thu, 26 Aug 2010 11:50:17 +0900 > > KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> wrote: > > > >> 128MB...too big ? But it's depend on config. > >> > >> IBM's ppc guys used 16MB section, and recently, a new interface to shrink > >> the number of /sys files are added, maybe usable. > >> > >> Something good with this approach will be you can create "cma" memory > >> before installing driver. > >> > >> But yes, complicated and need some works. > >> > > Ah, I need to clarify what I want to say. > > > > With compaction, it's helpful, but you can't get contiguous memory larger > > than MAX_ORDER, I think. To get memory larger than MAX_ORDER on demand, > > memory hot-plug code has almost all necessary things. > > True. Doesn't patch's idea of Christoph helps this ? > http://lwn.net/Articles/200699/ > yes, I think so. But, IIRC, it's own purpose of Chirstoph's work is for removing zones. please be careful what's really necessary. Thanks, -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>