linux-kernel - Re: [PATCH] OLPC: only check for OFW signature on VSA-less Geodes

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Date:	Mon, 28 Apr 2008 20:06:51 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Andres Salomon <dilinger@...ued.net>
Cc:	David Woodhouse <dwmw2@...radead.org>,
	Mitch Bradley <wmb@...mworks.com>,
	Yinghai Lu <yhlu.kernel@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Ingo Molnar <mingo@...e.hu>, Joseph Fannin <jfannin@...il.com>,
	linux-kernel@...r.kernel.org, jordan.crouse@....com
Subject: Re: [PATCH] OLPC: only check for OFW signature on VSA-less Geodes

On Mon, 21 Apr 2008 17:02:30 -0400 Andres Salomon <dilinger@...ued.net> wrote:

> +	if (!is_geode() || geode_has_vsa2())

geode_has_vsa2() is a fairly expensive-looking function and afacit only
needs to be evaluated once per boot.  Perhaps we should cache it somewhere?

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