linux-kernel - Re: [PATCH 3/4] x86: call verify

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Message-ID: <AANLkTimzAaj1Z-jyCLBPKGzp_PWw2hwkYy_XeLo8CKPP@mail.gmail.com>
Date:	Tue, 9 Nov 2010 21:09:18 +0200
From:	Pekka Enberg <penberg@...nel.org>
To:	Kees Cook <kees.cook@...onical.com>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] x86: call verify_cpu during 32bit CPU startup

On Tue, Nov 9, 2010 at 8:15 PM, Kees Cook <kees.cook@...onical.com> wrote:
> The XD_DISABLE-clearing side-effect needs to happen on 32bit CPU
> start-up as well.
>
> Signed-off-by: Kees Cook <kees.cook@...onical.com>

The patch description here is pretty damn terse. Why do we need the
clearing for? Does not clearing XD_DISABLE cause some problem?
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