From: Mihai Caraman <mihai.caraman@freescale.com>
Date: Thu, 6 Sep 2012 02:49:44 +0000 (+0000)
Subject: powerpc: Restore VDSO information on critical exception om BookE
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~10^2~84
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0127262c01f0beb485f917c720d1d95d165dfdbf;p=pandora-kernel.git

powerpc: Restore VDSO information on critical exception om BookE

Critical exception on 64-bit booke uses user-visible SPRG3 as scratch.
Restore VDSO information in SPRG3 on exception prolog.

Use a common sprg3 field in PACA for all powerpc64 architectures.

Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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