On 17.03.20 11:49, David Hildenbrand wrote: > For now, distributions implement advanced udev rules to essentially > - Don't online any hotplugged memory (s390x) > - Online all memory to ZONE_NORMAL (e.g., most virt environments like > hyperv) > - Online all memory to ZONE_MOVABLE in case the zone imbalance is taken > care of (e.g., bare metal, special virt environments) > > In summary: All memory is usually onlined the same way, however, the > kernel always has to ask user space to come up with the same answer. > E.g., Hyper-V always waits for a memory block to get onlined before > continuing, otherwise it might end up adding memory faster than > hotplugging it, which can result in strange OOM situations. This waiting s/hotplugging/onlining/ -- Thanks, David / dhildenb
