Re: [RFC PATCH] Exporting Guest RAM information for NUMA binding

Peter Zijlstra
2011-11-30T16:25:15Z

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.