On Tue 16-11-21 13:30:45, Christoph Lameter wrote: > On Mon, 15 Nov 2021, Dennis Zhou wrote: > > > I need some clarification here. It sounds like memoryless nodes work on > > x86, but hotplug + memoryless nodes isn't a supported use case or you're > > introducing it as a new use case? > > Could you do that step by step? > > First add the new node and ensure everything is ok and that the memory is > online. > > *After* that is done bring up the new processor and associate the > processor with *online* memory. We are discussing that in the original thread - http://lkml.kernel.org/r/YZN3ExwL7BiDS5nj@xxxxxxxxxxxxxx This patch is a a workaround that problem in the pcp code. -- Michal Hocko SUSE Labs