On Mon 01-07-19 09:43:06, Michal Hocko wrote: > On Mon 27-05-19 13:11:43, David Hildenbrand wrote: > > ZONE_DEVICE is not yet supported, fail if an altmap is passed, so we > > don't forget arch_add_memory()/arch_remove_memory() when unlocking > > support. > > Why do we need this? Sure ZONE_DEVICE is not supported for s390 and so > might be the case for other arches which support hotplug. I do not see > much point in adding warning to each of them. I would drop this one. If there is a strong reason to have something like that it should come with a better explanation and it can be done on top. -- Michal Hocko SUSE Labs