[PATCH v2 0/5] mm: Enable CONFIG_NODES_SPAN_OTHER_NODES by default for NUMA

[Hoan Tran OS]

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
>