On Wed, Mar 09, 2016 at 02:38:52PM -0500, Rik van Riel wrote: > On Wed, 2016-03-09 at 20:04 +0300, Roman Kagan wrote: > > On Wed, Mar 09, 2016 at 05:41:39PM +0200, Michael S. Tsirkin wrote: > > > On Wed, Mar 09, 2016 at 05:28:54PM +0300, Roman Kagan wrote: > > > > For (1) I've been trying to make a point that skipping clean > > > > pages is > > > > much more likely to result in noticable benefit than free pages > > > > only. > > > > > > I guess when you say clean you mean zero? > > > > No I meant clean, i.e. those that could be evicted from RAM without > > causing I/O. > > > > Programs in the guest may have that memory mmapped. > This could include things like libraries and executables. > > How do you deal with the guest page cache containing > references to now non-existent memory? > > How do you re-populate the memory on the destination > host? I guess the confusion is due to the context I stripped from the previous messages... Actually I've been talking about doing full-fledged balloon inflation before the migration, so, when it's deflated the guest will fault in that data from the filesystem as usual. Roman. -- 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>