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Date: Thu, 10 Apr 2008 06:53:37 -0500
From: Josh Boyer <jwboyer@linux.vnet.ibm.com>
To: Jerone Young <jyoung5@us.ibm.com>
Subject: Re: [PATCH] [v5] Add idle wait support for 44x platforms
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On Tue, 08 Apr 2008 11:49:14 -0500
Jerone Young <jyoung5@us.ibm.com> wrote:

> 2 files changed, 77 insertions(+), 1 deletion(-)
> arch/powerpc/platforms/44x/Makefile |    2 
> arch/powerpc/platforms/44x/idle.c   |   76 +++++++++++++++++++++++++++++++++++
> 
> 
> Updates: Now setting MSR_WE is now default
>          Tested on hardware platforms bamboo & sequioa and appears
>          things are working fine on actually hardware!
> 
> This patch adds the ability for the CPU to go into wait state while in cpu_idle loop. This helps virtulization solutions know when the guest Linux kernel is in an idle state. There are two ways to do it.
> 
> Command line
> 	idle=spin <-- CPU will spin
> 	idle=wait <-- set CPU into wait state when idle (default)
> 
> 
> Signed-off-by: Jerone Young <jyoung5@us.ibm.com>

Looks great.  I'll add it to my tree shortly.

josh