linux-kernel - Re: [PATCH] drm/i915: Set up an MTRR covering the GTT at driver load.

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Message-ID: <20090124115120.GA75534@dspnet.fr.eu.org>
Date:	Sat, 24 Jan 2009 12:51:20 +0100
From:	Olivier Galibert <galibert@...ox.com>
To:	Eric Anholt <eric@...olt.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/i915: Set up an MTRR covering the GTT at driver load.

On Fri, Jan 23, 2009 at 02:54:17PM -0800, Eric Anholt wrote:
> +	/* Set up a WC MTRR for non-PAT systems.  This is more common than
> +	 * one would think, because the kernel disables PAT on first
> +	 * generation Core chips because WC PAT gets overridden by a UC
> +	 * MTRR if present.  Even if a UC MTRR isn't present.

As a non-native speaker, I don't understand what the last sentence
means.  X gets overridden by Y even if there's no Y doesn't make
sense.  Could you do a simpler version?

  OG.
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