linux-kernel - Re: [Lhms-devel] [PATCH 4/10] hot-add-mem x86

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Date:	Fri, 04 Aug 2006 18:17:13 +0300
From:	Mika Penttilä <mika.penttila@...umbus.fi>
To:	Keith Mannthey <kmannth@...ibm.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org, discuss@...-64.org,
	ak@...e.de, lhms-devel@...ts.sourceforge.net,
	kamezawa.hiroyu@...fujitsu.com
Subject: Re: [Lhms-devel] [PATCH 4/10] hot-add-mem x86_64: Enable SPARSEMEM
 in	srat.c

Keith Mannthey wrote:
> From: Keith Mannthey <kmannth@...ibm.com>
>
>  Enable x86_64 srat.c to share code between both reserve and sparsemem based add memory
> paths.  Both paths need the hot-add area node locality infomration (nodes_add).  This 
> code refactors the code path to allow this. 
>
> Signed-off-by: Keith Mannthey<kmannth@...ibm.com>
>   
Ok nice, but.... hotadd_enough_memory() is broken, it does weird things 
with nd->start and nd->end which haven't been assigned even values yet. 
Also, mysterious business with find_e820_area and last_area_end...These 
areas are not in e820...

And why the reserve_bootmem_node()? Areas not RAM (per e820) are 
reserved anyways.

--Mika

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