Re: Who's doing what with cpu/memory/node hotplug?

[Keiichiro Tokunaga <tokunaga.keiich@jp.fujitsu.com>]

On Wed, 12 May 2004 23:50:58 -0700
Dave Hansen <haveblue@us.ibm.com> wrote:

> On Wed, 2004-05-12 at 23:35, Keiichiro Tokunaga wrote:
> > > Node Hotplug support - Tokunaga-san (fujitsu) mostly concentrating on 
> > > 		ACPI based numa node hotplug. This work is independent
> > > of rest of the hotplug (atleast mostly) and would invoke other module
> > > hotplug code as required.  (roughly @10000 ft level)
> > 
> > I'm rather focusing on ACPI based container device hotplug.
> > A scope of LHNS includes a container device that contains
> > IO devices.  I think such a devices couldn't be handled by NUMA
> > hotplug.
> 
> 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?

> BTW, what *is* NUMA hotplug? :)

I'm sorry, that would have to be "NUMA node hotplug"...

Thanks,
Kei