Messages in this thread | | | Date | Tue, 21 May 2019 18:11:05 +0200 | From | Oscar Salvador <> | Subject | Re: [PATCH] docs: reorder memory-hotplug documentation |
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On Tue, May 21, 2019 at 12:41:50PM +0200, David Hildenbrand wrote: > > +Future Work > > +=========== > > + > > + - allowing memory hot-add to ZONE_MOVABLE. maybe we need some switch like > > + sysctl or new control file. > > ... that already works if I am not completely missing the point here
It does.
> > + - support HugeTLB page migration and offlining. > > ... I remember that Oscar was doing something in that area, Oscar?
Yes, in general offlinining on hugetlb pages was already working, but we did not allow to offline 1GB-hugetlb pages on x86_64. I removed that limitation with ("commit: 10eeadf3045c mm,memory_hotplug: unlock 1GB-hugetlb on x86_64") , so now offlining on hugetlb pages should be fully operative.
> I'd vote for removing the future work part, this is pretty outdated.
Instead of removing it, I would rather make it consistent with the present. E.g:
- Move page handling from memory-hotremove to offline stage - Enable a way to allocate vmemmap pages from hot-added memory etc.
-- Oscar Salvador SUSE L3
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