Hi Rafael, On 06/29/2012 06:49 AM, Rafael Aquini wrote: > This patchset follows the main idea discussed at 2012 LSFMMS section: > "Ballooning for transparent huge pages" -- http://lwn.net/Articles/490114/ Could you summarize the problem, solution instead of link URL in cover-letter? IIUC, the problem is that it is hard to get contiguous memory in guest-side after ballooning happens because guest-side memory could be very fragmented by ballooned page. It makes THP page allocation of guest-side very poor success ratio. The solution is that when memory ballooning happens, we allocates ballooned page as a movable page in guest-side because they can be migrated easily so compaction of guest-side could put together them into either side so that we can get contiguous memory. For it, compaction should be aware of ballooned page. Right? -- Kind regards, Minchan Kim -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>