linux-kernel - Re: [PATCH x86/mm UPDATED] x86-64, NUMA: Fix distance table handling

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Message-ID: <20110311182940.GK13038@htj.dyndns.org>
Date:	Fri, 11 Mar 2011 19:29:40 +0100
From:	Tejun Heo <tj@...nel.org>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	David Rientjes <rientjes@...gle.com>, Ingo Molnar <mingo@...e.hu>,
	tglx@...utronix.de, "H. Peter Anvin" <hpa@...or.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH x86/mm UPDATED] x86-64, NUMA: Fix distance table
 handling

On Fri, Mar 11, 2011 at 10:25:23AM -0800, Yinghai Lu wrote:
> now even emulation have that distance array.
> 
> why keep it simple to make all path have that array?

Okay, I don't know, maybe, but I don't think it's gonna buy much.  We
need boundary check in the distance testing function anyway in case
someone calls in with out-of-bound nid's and not having distance table
is just a degenerate case of the generic sanity check, so there really
isn't much to be gained by allocating dummy table.

-- 
tejun
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