From e92716f2aa68cdfbf6ec24d6f31f08b072e1a246 Mon Sep 17 00:00:00 2001
From: Jerone Young <jyoung5@us.ibm.com>
Date: Sat, 12 Apr 2008 05:03:33 +1000
Subject: [PATCH] [POWERPC] 4xx: Add idle wait support for 44x platforms

This changes the cpu_idle loop for 44x platforms to utilize the Wait Enable
feature of the CPU.  This helps virtulization solutions know when the guest
Linux kernel is in an idle state.

A command line option called "idle" is also added to allow people to change
the idle loop back to the original variation.  This is done by setting
"idle=spin" on the kernel command line.

Signed-off-by: Jerone Young <jyoung5@us.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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