linux-kernel - Re: [RFC 1/8] Convert higest_possible_node_id() into nr_node

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Message-ID: <Pine.LNX.4.64.0701161913180.4677@schroedinger.engr.sgi.com>
Date:	Tue, 16 Jan 2007 19:14:12 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Andi Kleen <ak@...e.de>
cc:	akpm@...l.org, Paul Menage <menage@...gle.com>,
	linux-kernel@...r.kernel.org,
	Nick Piggin <nickpiggin@...oo.com.au>, linux-mm@...ck.org,
	Paul Jackson <pj@....com>, Dave Chinner <dgc@....com>
Subject: Re: [RFC 1/8] Convert higest_possible_node_id() into nr_node_ids

On Wed, 17 Jan 2007, Andi Kleen wrote:

> On Tuesday 16 January 2007 16:47, Christoph Lameter wrote:
> 
> > I think having the ability to determine the maximum amount of nodes in
> > a system at runtime is useful but then we should name this entry
> > correspondingly and also only calculate the value once on bootup.
> 
> Are you sure this is even possible in general on systems with node
> hotplug? The firmware might not pass a maximum limit.

In that case the node possible map must include all nodes right?

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