On Mon, 24 Sep 2018 14:39:17 +0200 Oscar Salvador <osalvador@xxxxxxxxxxxxxxxxxx> wrote: > On Mon, Sep 24, 2018 at 01:07:01PM +0100, Jonathan Cameron wrote: > > > > Hi All, > > > > This is with some additional patches on top of the mm tree to support > > arm64 memory hot plug, but this particular issue doesn't (at first glance) > > seem to be connected to that. It's not a recent issue as IIRC I > > disabled Kconfig for cgroups when starting to work on this some time ago > > as a quick and dirty work around for this. > > Hi Jonathan, > > would you mind to describe the steps you are taking? > You are adding the memory, and then you online it? > Yes. Exactly that. I've hacked the efi memory map to give me 8GB of memory to play with. I then use /sys/devices/system/memory/probe to hot add a section and online via /sys/devices/nodes/devices/node3/memory80/online Everything 'works', but this warning occurs. This is with a forward ported version of the first lot of hotplug patches that Andrea Reale, Maciej Bielski and Scott Branden wrote... (with NUMA and ACPI support added). https://lkml.org/lkml/2017/4/11/536 Jonathan
