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

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Message-ID: <20090525094706.GX846@one.firstfloor.org>
Date:	Mon, 25 May 2009 11:47:06 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Jan Beulich <JBeulich@...ell.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Tomasz Chmielewski <mangoo@...g.org>, 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

On Mon, May 25, 2009 at 10:31:03AM +0100, Jan Beulich wrote:
> >>> 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.

Thanks for the correction.  

It's still all pretty old CPUs.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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