Re: [patch 2/2] enables booting a NUMA system where some nodes have no memory

Martin Bligh
2006-11-15T22:46:02Z

Christoph Lameter wrote:
> On Wed, 15 Nov 2006, Martin Bligh wrote:
>
>> A node is an arbitrary container object containing one or more of:
>>
>> CPUs
>> Memory
>> IO bus
>>
>> It does not have to contain memory.
>
> I have never seen a node on Linux without memory. I have seen nodes
> without processors and without I/O but not without memory.This seems to be
> something new?

A node was always defined that way. Search back a few years in the lkml
archives. We may be finding bugs in the implementation, but the
definition has not changed.

Supposing we hot-unplugged all the memory in a node? Or seems to have
happened in this instance is boot with mem=, cutting out memory on that
node.

M.