From: Michael Neuling <mikey@neuling.org>
Date: Fri, 9 Aug 2013 07:29:30 +0000 (+1000)
Subject: powerpc: Save the TAR register earlier
X-Git-Tag: v3.11-rc5~2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c2d52644e2da8a07ecab5ca62dd0bc563089e8dc;p=pandora-kernel.git

powerpc: Save the TAR register earlier

This moves us to save the Target Address Register (TAR) a earlier in
__switch_to.  It introduces a new function save_tar() to do this.

We need to save the TAR earlier as we will overwrite it in the transactional
memory reclaim/recheckpoint path.  We are going to do this in a subsequent
patch which will fix saving the TAR register when it's modified inside a
transaction.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Cc: <stable@vger.kernel.org> [v3.10]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

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