linux-kernel - Re: [Xen-devel] Re: [GIT PULL] xen /proc/mtrr implementation

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Date:	Mon, 25 May 2009 10:31:03 +0100
From:	"Jan Beulich" <JBeulich@...ell.com>
To:	"Andi Kleen" <andi@...stfloor.org>,
	"Tomasz Chmielewski" <mangoo@...g.org>
Cc:	<mingo@...e.hu>, <jeremy@...p.org>,
	"Alan" <alan@...rguk.ukuu.org.uk>,
	"Gerd Hoffmann" <kraxel@...hat.com>,
	"LKML" <linux-kernel@...r.kernel.org>, <jbarnes@...tuousgeek.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [Xen-devel] Re: [GIT PULL] xen /proc/mtrr implementation

>>> Andi Kleen <andi@...stfloor.org> 25.05.09 11:15 >>>
>To my knowledge the only CPUs with broken PAT are some very old Pentium
>Pros dating from back the time when PAT was new and noone used it.
>On those it should be disabled or the high bits not used.

??? See PentiumIII erratum E27.

Jan

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