This patchset can also fix a related problem that I reported earlier at https://lists.ozlabs.org/pipermail/linuxppc-dev/2020-March/206076.html with an additional change, suggested by Srikar as shown below: On Tue, Mar 17, 2020 at 06:47:53PM +0530, Srikar Dronamraju wrote: > Currently fallback nodes for offline nodes aren't set. Hence by default > node 0 ends up being the default node. However node 0 might be offline. > > Fix this by explicitly setting fallback node. Ensure first_memory_node > is set before kernel does explicit setting of fallback node. > > arch/powerpc/mm/numa.c | 11 ++++++++++- > 1 file changed, 10 insertions(+), 1 deletion(-) > > diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c > index 281531340230..6e97ab6575cb 100644 > --- a/arch/powerpc/mm/numa.c > +++ b/arch/powerpc/mm/numa.c > @@ -827,7 +827,16 @@ void __init dump_numa_cpu_topology(void) > if (!numa_enabled) > return; > > - for_each_online_node(node) { > + for_each_node(node) { > + /* > + * For all possible but not yet online nodes, ensure their > + * node_numa_mem is set correctly so that kmalloc_node works > + * for such nodes. > + */ > + if (!node_online(node)) { Change the above line to like below: + if (!node_state(node, N_MEMORY)) { Regards, Bharata.
