On Wed, Aug 08, 2018 at 09:51:50AM +0200, David Hildenbrand wrote: > > I am pretty sure this is a dumb question, but why HMM/devm path > > do not call online_pages/offline_pages? > > I think mainly because onlining/offlining (wild guesses) > > - calls memory notifiers > - works with memory blocks > > (and does some more things not applicable to ZONE_DEVICE memory) Yes, you are right. They call arch_add_memory while want_memblock being false and so they do not get to call hotplug_memory_register which handles all the memory block stuff. Thanks -- Oscar Salvador SUSE L3
