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From: Andi Kleen <ak@suse.de>
To: "Jan Beulich" <jbeulich@novell.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] i386/PAE: avoid temporarily inconsistent pte-s
Date: Wed, 19 Sep 2007 18:09:47 +0200	[thread overview]
Message-ID: <200709191809.47351.ak@suse.de> (raw)
In-Reply-To: <46F150CB.76E4.0078.0@novell.com>

On Wednesday 19 September 2007 16:39:39 Jan Beulich wrote:
> One more of these issues (which were considered fixed a few releases
> back): Other than on x86-64, i386 allows set_fixmap() to replace
> already present mappings. Consequently, on PAE, care must be taken to
> not update the high half of a pte while the low half is still holding
> the old value.

Hmm perhaps it would be better to just forbid it on i386 too.
Do you know who uses it?

-Andi


  reply	other threads:[~2007-09-19 16:10 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-19 14:39 [PATCH] i386/PAE: avoid temporarily inconsistent pte-s Jan Beulich
2007-09-19 16:09 ` Andi Kleen [this message]
2007-09-19 16:16   ` Jan Beulich
2007-09-19 16:17     ` Andi Kleen

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