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DateFri, 25 Apr 2008 16:33:48 +0200 (CEST)
FromJiri Kosina <>
SubjectRe: [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@goop.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.

--
Jiri Kosina
SUSE Labs



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