On Thu, Jun 01, 2017 at 05:52:31PM +0200, Michal Hocko wrote:
On Thu 01-06-17 10:47:46, Reza Arbab wrote:
On Thu, Jun 01, 2017 at 05:38:38PM +0200, Michal Hocko wrote:
>On Thu 01-06-17 10:19:36, Reza Arbab wrote:
>>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.
>
>Yes but lose that information after the memblock is gone and numa fully
>initialized. Or can we reconstruct that somehow?
I'm not sure you'd have to. At boot time, those markings are used to
determine the initial boundaries of ZONE_MOVABLE. So if you removed these
memblocks, then readded them, they would still be in ZONE_MOVABLE.
Yes but that already works like that. I am nore interested in the case
when the node goes away and it is added again. echo online > ... would
result in a non-movable memory and that is the inconsistency I tried to
call out in the changelog
My bad. Should have read closer.
--
Reza Arbab
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