From: Paolo Galtieri <pgaltieri@mvista.com>
Date: Tue, 29 Nov 2005 22:26:47 +0000 (-0800)
Subject: [PATCH] ppc: fix floating point register corruption
X-Git-Tag: v2.6.15-rc4~4^2^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8117ce76c28ef0cab8545b518fa0543f6d1437e6;p=pandora-kernel.git

[PATCH] ppc: fix floating point register corruption

I recently discovered a bug on PPC which causes the floating point
registers to get corrupted when CONFIG_PREEMPT=y.

The problem occurred while running a multi threaded Java application that
does floating point.  The problem could be reproduced in anywhere from 2 to
6 hours.  With the patch I have included below it ran for over a week
without failure.

Signed-off-by: Paolo Galtieri <pgaltieri@mvista.com>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Tom Rini <trini@kernel.crashing.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

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