powerpc/numa: Set numa_node for all possible cpus

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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.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200818081104.57888-2-srikar@linux.vnet.ibm.com

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Srikar Dronamraju 2020-08-18 13:41:02 +05:30 • committed by Michael Ellerman

parent 67df77845c

commit a874f1005e

1 changed files with 15 additions and 1 deletions

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arch/powerpc/mm/numa.c

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