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

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Message-Id: <20100514.013012.13730149.davem@davemloft.net>
Date:	Fri, 14 May 2010 01:30:12 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	benh@...nel.crashing.org
Cc:	yinghai.lu@...cle.com, 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()

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.
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