Maybe s390x should just provide a dedicate interface to add these memory blocks instead of adding them during boot and then relying on the old way of using online/offline set them online/offline.Existing behavior: The current 'lsmem -a' command displays both online and standby memory. interface changes: If a new interface is introduced and standby memory is no longer listed, the following consequences might occur: 1. Running 'lsmem -a' would only show online memory, potentially leading to user complaints.That's why the new, clean way of doing it will require a world switch. If the admin wants the benefits of altmap/memmap allocation, it can be enabled.
BTW, thinking about it, I guess one could teach lsmem (and maybe chmem) to consult additional interfaces on s390x to show standby memory that's not added to the system yet.
-- Cheers, David / dhildenb
