On Wed, 2011-11-30 at 21:52 +0530, Dipankar Sarma wrote: > > Also, if at all topology changes due to migration or host kernel decisions, > we can make use of something like VPHN (virtual processor home node) > capability on Power systems to have guest kernel update its topology > knowledge. You can refer to that in > arch/powerpc/mm/numa.c.
I think that fail^Wfeature of PPC is terminally broken. You simply cannot change the topology after the fact.