linux-kernel - Re: [PATCH] x86: tighten kernel image page access rights (re-diff against firstfloor tree)

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Message-Id: <200703291554.08017.ak@suse.de>
Date:	Thu, 29 Mar 2007 15:54:07 +0200
From:	Andi Kleen <ak@...e.de>
To:	"Jan Beulich" <jbeulich@...ell.com>
Cc:	linux-kernel@...r.kernel.org, patches@...-64.org
Subject: Re: [PATCH] x86: tighten kernel image page access rights (re-diff against firstfloor tree)

On Thursday 29 March 2007 15:49, Jan Beulich wrote:
> >>> Andi Kleen <ak@...e.de> 29.03.07 14:22 >>>
> >On Thursday 29 March 2007 14:01, Jan Beulich wrote:
> >> On x86-64, kernel memory freed after init can be entirely unmapped instead
> >> of just getting 'poisoned' by overwriting with a debug pattern.
> >> 
> >> On i386 and x86-64 (under CONFIG_DEBUG_RODATA), kernel text and bug table
> >> can also be write-protected.
> >> 
> >> (Not sure what the symbol 'stext' is good for; can it be removed?)
> >
> >I see you remove it already
> 
> I don't think I do - I just move _stext (on x86-64), but leave stext alone.

Ok i removed it now

-Andi

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