From: Anton Blanchard <anton@samba.org>
Date: Wed, 28 Sep 2005 04:45:38 +0000 (-0700)
Subject: [PATCH] ppc64: Add missing barrier() in kexec code
X-Git-Tag: v2.6.14-rc3~83
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b3ca80935100af47f226be439cb266378dab7bf7;p=pandora-kernel.git

[PATCH] ppc64: Add missing barrier() in kexec code

Mikey and I were testing kexec and hit a lockup.  It turns out gcc 4.0
optimises the kexec_prepare_cpus loop so we avoid reloading paca.hw_cpu_id.
 A gcc barrier() fixes the problem.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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