From: Paul Mackerras <paulus@samba.org>
Date: Wed, 30 Nov 2005 02:20:54 +0000 (+1100)
Subject: powerpc: Fix bug causing FP registers corruption on UP + preempt
X-Git-Tag: v2.6.15-rc4~4^2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=48abec07cf8063184d397560a6a5f27eaf9caddf;p=pandora-kernel.git

powerpc: Fix bug causing FP registers corruption on UP + preempt

This fixes a bug noticed by Paolo Galtieri and fixed for ARCH=ppc in
the previous commit (ppc: fix floating point register corruption).
This fixes the arch/powerpc code by adding preempt_disable/enable,
and also cleans it up a bit by pulling out the code that discards
any lazily-switched CPU register state into a new function, rather
than having that code repeated in three places.

Signed-off-by: Paul Mackerras <paulus@samba.org>
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