From: Josh Boyer <jwboyer@linux.vnet.ibm.com>
To: Jerone Young <jyoung5@us.ibm.com>
Cc: kvm-ppc-devel@lists.sourceforge.net, linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] [v5] Add idle wait support for 44x platforms
Date: Thu, 10 Apr 2008 06:53:37 -0500 [thread overview]
Message-ID: <20080410065337.2152828e@zod.rchland.ibm.com> (raw)
In-Reply-To: <df0f79b7b4ab628887c2.1207673354@thinkpadL>
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
next prev parent reply other threads:[~2008-04-10 11:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-08 16:49 [PATCH] [v5] Add idle wait support for 44x platforms Jerone Young
2008-04-08 19:43 ` [kvm-ppc-devel] " Hollis Blanchard
2008-04-10 11:53 ` Josh Boyer [this message]
2008-04-10 13:44 ` Arnd Bergmann
2008-04-10 20:08 ` Jerone Young
2008-04-11 0:18 ` Arnd Bergmann
2008-04-11 1:02 ` Josh Boyer
2008-04-11 5:31 ` Olof Johansson
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