From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: [patch 0/2] Updates to compat VDSOs
Date: Wed, 04 Apr 2007 21:58:25 -0700
Message-ID: <20070405045825.511024444@goop.org>
Return-path: <linux-kernel-owner+glk-linux-kernel-3=40m.gmane.org-S1161179AbXDEFC5@vger.kernel.org>
Sender: linux-kernel-owner@vger.kernel.org
To: Andi Kleen <ak@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>, virtualization@lists.osdl.org, lkml <linux-kernel@vger.kernel.org>
List-Id: virtualization@lists.linuxfoundation.org

Hi Andi,

Here's a couple of patches to fix up COMPAT_VDSO:

The first is a straightforward implementation of Jan's original idea
of relocating the VDSO to match its mapped location.  Unlike Jan and
Zach's version, I changed it to relocate based on the phdrs rather than
the sections; the result is pleasantly compact.

The second patch takes advantage of the fact that all the COMPAT_VDSO work
happens at runtime now, and allows compat mode to be enabled dynamically.
If you specify vdso=2 on the kernel command line, it comes up in compat
mode; vdso=1 is normal vdso mode, and vdso=0 disables vdso altogether.
You can also switch modes with sysctl.

Thanks,
	J

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