On Tue, 2006-08-08 at 11:08 +0900, KAMEZAWA Hiroyuki wrote:
> On Mon, 07 Aug 2006 17:56:56 -0700
> keith mannthey <[email protected]> wrote:
>
> > I know of no x86_64 hardware the supports empty node hot-add memory. If
> > it exists I would recommend using SPARSEMEM based hot-add. On HW I am
> > aware of there is always some memory present in a node at boot.
> >
> >
> O.K one more.
>
> I know x86_64 has ZONE_DMA32. A system boot with only memory below 4G
> has no avilable memory in ZONE_NORMAL. If a new memory above 4G is added,
> ZONE_NORMAL comes as *new* zone.
> ZONE_NORMAL is empty at boot, so it's not in zonelist at boot.
>
> is this not problem ?
Perhaps in this situation you could run into trouble. I am not sure if
I can put my hardware into this config but I will try.
Thanks for taking a look at these patches and the reserve path.
Thanks,
Keith
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