Re: [Lhms-devel] [RFC] fix for hot-add enabled SRAT/BIOS and numa KVA areas

keith
2004-11-18T02:18:38Z

On Wed, 2004-11-17 at 14:42, Dave Hansen wrote:
> On Wed, 2004-11-17 at 14:33, Yasunori Goto wrote:
> > But e820 probably indicates just memory areas which
> > are already connected on the board, right?
>
> It's more than that. It indicates which were connected the first time
> that the machine was powered on. If you suspend or hibernate the system
> for some reason, it has to always present the e820 as it initially
> appeared.

You use the acpi events to handle the addition of memory. The e820 is
what you use to boot with.

> > BTW, I have a question.
> > - Can x445 be attached memory without removing the node?
> > In my concern machine, there is no physical space to
> > hot add or exchange memory without physical removing
> > the node. But, this SRAT table indicate that
> > all of proximity is 0x01....
> > Or is it just logical attachment?
>
> You can't remove nodes, just DIMMs. The x440 hotplug is more like the
> SMP case that I've always been concerned with.
> -- Dave

My hardware only supports addition of memory not removal.

Thanks,
Keith Mannthey