On Thu, 2015-03-05 at 21:27 -0800, Nishanth Aravamudan wrote:
> diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
> index 0257a7d659ef..0c1716cd271f 100644
> --- a/arch/powerpc/mm/numa.c
> +++ b/arch/powerpc/mm/numa.c
> @@ -958,6 +958,13 @@ void __init initmem_init(void)
>  
>       memblock_dump_all();
>  
> +     /*
> +      * Reduce the possible NUMA nodes to the online NUMA nodes,
> +      * since we do not support node hotplug. This ensures that  we
> +      * lower the maximum NUMA node ID to what is actually present.
> +      */
> +     node_possible_map = node_online_map;

That looks nice, but is it generating what we want?

ie. is the content of node_online_map being *copied* into node_possible_map.

Or are we changing node_possible_map to point at node_online_map?

cheers


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