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

[keith <kmannth@us.ibm.com>]

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 

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