linux-kernel - Re: [PATCH 11/35] lmb: Add find_memory_core

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Message-ID: <4BED7DFE.2090108@oracle.com>
Date:	Fri, 14 May 2010 09:44:46 -0700
From:	Yinghai Lu <yinghai.lu@...cle.com>
To:	David Miller <davem@...emloft.net>
CC:	benh@...nel.crashing.org, mingo@...e.hu, tglx@...utronix.de,
	hpa@...or.com, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org, hannes@...xchg.org,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH 11/35] lmb: Add find_memory_core_early()

On 05/14/2010 01:30 AM, David Miller wrote:
> From: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Date: Fri, 14 May 2010 18:19:47 +1000
>
>   
>> OK, I'll have to let Davem deal with the fine point of the sparc bits,
>> but I think basically sparc has CONFIG_ARCH_POPULATES_NODE_MAP set, but
>> the way it's NUMA affinity works, the early_node_map[] is crap, you
>> cannot rely on the ranges in there.
>>     
>   

> Right, we can't use early_node_map[] on sparc, because the NUMA
> mappings are far too granular to use that kind of representation.
>   
good to know.

early_node_map[] doesn't have enough slot?

YH
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