Hi, On 7/30/19 1:14 AM, Michal Hocko wrote: > [Sorry for a late reply] > > On Mon 15-07-19 17:55:07, Hoan Tran OS wrote: >> Hi, >> >> On 7/12/19 10:00 PM, Michal Hocko wrote: > [...] >>> Hmm, I thought this was selectable. But I am obviously wrong here. >>> Looking more closely, it seems that this is indeed only about >>> __early_pfn_to_nid and as such not something that should add a config >>> symbol. This should have been called out in the changelog though. >> >> Yes, do you have any other comments about my patch? > > Not really. Just make sure to explicitly state that > CONFIG_NODES_SPAN_OTHER_NODES is only about __early_pfn_to_nid and that > doesn't really deserve it's own config and can be pulled under NUMA. Yes, I will add this info into the patch description. > >>> Also while at it, does HAVE_MEMBLOCK_NODE_MAP fall into a similar >>> bucket? Do we have any NUMA architecture that doesn't enable it? >>> >> >> As I checked with arch Kconfig files, there are 2 architectures, riscv >> and microblaze, do not support NUMA but enable this config. >> >> And 1 architecture, alpha, supports NUMA but does not enable this config. > > Care to have a look and clean this up please? Sure, I'll take a look. Thanks Hoan >