Messages in this thread | | | Date | Thu, 1 Jun 2017 10:19:36 -0500 | From | Reza Arbab <> | Subject | Re: [RFC PATCH] mm, memory_hotplug: support movable_node for hotplugable nodes |
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On Thu, Jun 01, 2017 at 04:22:28PM +0200, Michal Hocko wrote: >On Thu 01-06-17 16:11:55, Vlastimil Babka wrote: >> Simple should work, hopefully. >> - if memory is hotplugged, it's obviously hotplugable, so we don't have >> to rely on BIOS description. > >Not sure I understand. We do not have any information about the hotplug >status at the time we do online.
The x86 SRAT (or the dt, on other platforms) can describe memory as hotpluggable. See memblock_mark_hotplug(). That's only for memory present at boot, though.
He's saying that since the memory was added after boot, it is by definition hotpluggable. There's no need to check for that marking/description.
-- Reza Arbab
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