Re: [PATCH AUTOSEL 4.14 62/95] mm, memory_hotplug: initialize struct pages for the full memory section

Michal Hocko
2019-05-07T17:54:23Z

On Tue 07-05-19 13:45:14, Sasha Levin wrote:
[...]
> We're going to have (quite a) large amount of systems with "weird"
> memory layouts that do memory hotplug quite frequently in production, so
> this whole "tends to work usually" thing kinda scares me.

Memory hotplug is simply not production ready for those cases,
unfortunately. It tends to work just fine with properly section
aligned systems with memory being in the movable zones or for zone
device. Everything beyond that is kinda long way to get there...
--
Michal Hocko
SUSE Labs