From: Ian Munsie <imunsie@au1.ibm.com>
Date: Thu, 7 Feb 2013 15:46:58 +0000 (+0000)
Subject: powerpc: Add support for context switching the TAR register
X-Git-Tag: v3.9-rc1~100^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2468dcf641e4f3e1b0153e3e11ca20740b2f4ce8;p=pandora-kernel.git

powerpc: Add support for context switching the TAR register

This patch adds support for enabling and context switching the Target
Address Register in Power8. The TAR is a new special purpose register
that can be used for computed branches with the bctar[l] (branch
conditional to TAR) instruction in the same manner as the count and link
registers.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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