Re: [Lhns-devel] Re: Who's doing what with cpu/memory/node hotplug?

Keiichiro Tokunaga
2004-05-14T03:02:07Z

On Thu, 13 May 2004 18:28:37 -0700
Dave Hansen <haveblue@us.ibm.com> wrote:

> On Thu, 2004-05-13 at 18:14, Keiichiro Tokunaga wrote:
> > On Wed, 12 May 2004 23:50:58 -0700 Dave Hansen <haveblue@us.ibm.com> wrote:
> > > Why not? We already export the information about which PCI busses are
> > > attached to which NUMA nodes. How are I/O devices different from CPU or
> > > memory?
> >
> > I have just one concern.
> > How about a container device that contains IO devices only?
> > - Does it count as a NUMA node?
> > - Is it having a NUMA node ID?
>
> I don't see any real reasons why we can't make I/O only nodes. I know
> that we've run into and fixed a few situations where a node came up with
> either no cpus or no memory for various reasons before. Does anybody
> have any philosophical objections to having I/O only nodes?

I'm afraid I didn't know that the issue had discussed. I just
wondered if it's possible or not. It was more like a question
and I don't have any objection to having I/O only nodes. Can
you direct me to the discussion so that I could follow you :)?

Thanks,
Kei