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Date:	Tue, 8 Aug 2006 11:08:55 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	kmannth@...ibm.com
Cc:	akpm@...l.org, discuss@...-64.org, ak@...e.de,
	linux-kernel@...r.kernel.org, lhms-devel@...ts.sourceforge.net
Subject: Re: [Lhms-devel] [PATCH 1/10] hot-add-mem x86_64: acpi motherboard
 fix

On Mon, 07 Aug 2006 17:56:56 -0700
keith mannthey <kmannth@...ibm.com> 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 ?

-Kame

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