Subject: Re: [PATCH v5 1/3] powerpc/numa: Set numa_node for all possible cpus

From: Gautham R Shenoy <[email-masked]>
Date: Wed, 24 Jun 2020 15:18:43 +0530

On Wed, Jun 24, 2020 at 02:58:44PM +0530, Srikar Dronamraju wrote:
> A Powerpc system with multiple possible nodes and with CONFIG_NUMA
> enabled always used to have a node 0, even if node 0 does not any cpus
> or memory attached to it. As per PAPR, node affinity of a cpu is only
> available once its present / online. For all cpus that are possible but
> not present, cpu_to_node() would point to node 0.
> 
> To ensure a cpuless, memoryless dummy node is not online, powerpc need
> to make sure all possible but not present cpu_to_node are set to a
> proper node.
> 
> Cc: [email-masked]
> Cc: [email-masked]
> Cc: [email-masked]
> Cc: Michal Hocko <[email-masked]>
> Cc: Mel Gorman <[email-masked]>
> Cc: Vlastimil Babka <[email-masked]>
> Cc: "Kirill A. Shutemov" <[email-masked]>
> Cc: Christopher Lameter <[email-masked]>
> Cc: Michael Ellerman <[email-masked]>
> Cc: Andrew Morton <[email-masked]>
> Cc: Linus Torvalds <[email-masked]>
> Cc: Gautham R Shenoy <[email-masked]>
> Cc: Satheesh Rajendran <[email-masked]>
> Cc: David Hildenbrand <[email-masked]>
> Signed-off-by: Srikar Dronamraju <[email-masked]>

This looks good to me.

Reviewed-by: Gautham R. Shenoy <[email-masked]>

--
Thanks and Regards
gautham.