linux-kernel - Re: [2.6.25] compat VDSO option not disabling

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Date:	Sat, 26 Apr 2008 12:15:11 -0400 (EDT)
From:	Gerhard Mack <gmack@...erfire.net>
To:	Jiri Kosina <jkosina@...e.cz>
cc:	linux-kernel@...r.kernel.org
Subject: Re: [2.6.25] compat VDSO option not disabling

I havn't enabled compat VDSO at the kernel command line or otherwise.  
Something broke with this option. 

	Gerhard


On Fri, 25 Apr 2008, Jiri Kosina wrote:

> Date: Fri, 25 Apr 2008 16:33:48 +0200 (CEST)
> From: Jiri Kosina <jkosina@...e.cz>
> To: Gerhard Mack <gmack@...erfire.net>
> Cc: linux-kernel@...r.kernel.org
> Subject: Re: [2.6.25] compat VDSO option not disabling
> 
> On Thu, 24 Apr 2008, Gerhard Mack wrote:
> 
> > On my laptop I disabled the compat vdso option but it is till being 
> > mapped.. Any ideas?
> 
> The changelog of the commit below explains that.
> 
> commit 1dbf527c51c6c20c19869c8125cb5b87c3d09506
> Author: Jeremy Fitzhardinge <jeremy@...p.org>
> Date:   Wed May 2 19:27:12 2007 +0200
> 
>     [PATCH] i386: Make COMPAT_VDSO runtime selectable.
> 
>     Now that relocation of the VDSO for COMPAT_VDSO users is done at
>     runtime rather than compile time, it is possible to enable/disable
>     compat mode at runtime.
> 
>     This patch allows you to enable COMPAT_VDSO mode with "vdso=2" on the
>     kernel command line, or via sysctl.  (Switching on a running system
>     shouldn't be done lightly; any process which was relying on the compat
>     VDSO will be upset if it goes away.)
> 
>     The COMPAT_VDSO config option still exists, but if enabled it just
>     makes vdso_enabled default to VDSO_COMPAT.
> 
> 

--
Gerhard Mack

gmack@...erfire.net

<>< As a computer I find your faith in technology amusing.
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