From: H. Peter Anvin <hpa@linux.intel.com>
Date: Fri, 18 Jun 2010 21:36:26 +0000 (-0700)
Subject: x86, vdso: Error out if the vdso contains external references
X-Git-Tag: v2.6.36-rc1~527^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=05d0b0889ca9d033a960542af7f8a13b3ad4f630;p=pandora-kernel.git

x86, vdso: Error out if the vdso contains external references

The vdso is a piece of userspace code which is supposed to be fully
self-contained.  Any external (undefined) reference is an error, and
should be caught at compile time.  This was giving us trouble when
compiling with -Os on gcc 4.5.0, for example (failed inline).

The need to do a buildtime check was pointed out by Andi Kleen.

Reported-by: Andi Kleen <andi@firstfloor.org>
LKML-Reference: <tip-*@vger.kernel.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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