Subject: Re: [Cbe-oss-dev] [patch 02/02] powerpc/cell: add support for power button of future IBM cell blades

From: Benjamin Herrenschmidt <[email-masked]>
Date: Thu, 10 Jul 2008 06:45:30 +1000

On Wed, 2008-07-09 at 15:15 +0200, Arnd Bergmann wrote:
> Ugly, but doable, yes. I wonder if there is a way that we can trigger some
> interrupt from system_reset_exception context in order to get around the
> polling though. tasklets and workqueues unfortunately won't do us any good
> here because they also depend on disabling interrupts.

You can trigger a DEC interrupt at any time but you don't have
a nice hook to catch it. You can probably trigger an IPI to yourself
using a special call to the iic, do we have any available number ?

Ben.