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

[Gautham R Shenoy]

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: linuxppc-dev at lists.ozlabs.org
> Cc: linux-mm at kvack.org
> Cc: linux-kernel at vger.kernel.org
> Cc: Michal Hocko <mhocko at suse.com>
> Cc: Mel Gorman <mgorman at suse.de>
> Cc: Vlastimil Babka <vbabka at suse.cz>
> Cc: "Kirill A. Shutemov" <kirill at shutemov.name>
> Cc: Christopher Lameter <cl at linux.com>
> Cc: Michael Ellerman <mpe at ellerman.id.au>
> Cc: Andrew Morton <akpm at linux-foundation.org>
> Cc: Linus Torvalds <torvalds at linux-foundation.org>
> Cc: Gautham R Shenoy <ego at linux.vnet.ibm.com>
> Cc: Satheesh Rajendran <sathnaga at linux.vnet.ibm.com>
> Cc: David Hildenbrand <david at redhat.com>
> Signed-off-by: Srikar Dronamraju <srikar at linux.vnet.ibm.com>

This looks good to me.

Reviewed-by: Gautham R. Shenoy <ego at linux.vnet.ibm.com>

--
Thanks and Regards
gautham.