Messages in this thread | | | Subject | Re: [PATCH 03/10] mm/migrate: update node demotion order during on hotplug events | From | David Hildenbrand <> | Date | Mon, 12 Apr 2021 11:19:15 +0200 |
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On 12.04.21 09:19, Oscar Salvador wrote: > On Fri, Apr 09, 2021 at 08:59:21PM +0200, David Hildenbrand wrote: > >> The only way to add more System RAM is via add_memory() and friends like >> add_memory_driver_managed(). These all require CONFIG_MEMORY_HOTPLUG. > > Yeah, my point was more towards whether PMEM can come in a way that it does > not have to be hotplugged, but come functional by default (as RAM). > But after having read all papers out there, I do not think that it is possible. >
You mean e.g., configuring in the BIOS/firmware how an NVDIMM will get exposed to the OS (pmem vs. RAM). I once heard something about that, not sure if it's real. But from Linux' perspective, it would simply be System RAM and it would get treated like that.
-- Thanks,
David / dhildenb
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