Re: [patch 2/2] enables booting a NUMA system where some nodes haveno memory

[Martin Bligh]

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.

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