[coyotos-dev] SMP Patch 1

[Valerio Bellizzomi]

On 25/10/2007, at 13.40, Jonathan S. Shapiro wrote:

>On Thu, 2007-10-25 at 19:20 +0200, Valerio Bellizzomi wrote:
>> On 25/10/2007, at 7.53, Jonathan S. Shapiro wrote:
>>>On Thu, 2007-10-25 at 02:08 +0200, Valerio Bellizzomi wrote:
>> >> This is a fantastic thing if it is possible to reboot APs while
>> running.
>> >
>> >Why?
>> >
>> >Power management, sure, but why else?
>> 
>> Well, energy saving alone is a sufficiently hot topic to have this sort
>of
>> power management feature. I have something additional in mind but I am
>> still elaborating on it.
>
>The critical issue is going to be to learn how APs enter and leave sleep
>mode. If the leave sleep mode in such a way that they effectively have
>to be rebooted, we will need to preserve a valid low memory map for
>them.
>
>Dealing with power management and AP spinup/spindown is *way* beyond
>anything we are ready to look at right now. Simply getting SMP working
>at all is the goal at the moment.

This means that I have enought time to elaborate it.

>And to be honest, we're only looking at *that* because you and Jeroen
>are excited about it. We need to be paying attention to coldfire and
>interrupt processing right now, but we want to be responsive to
>encourage your enthusiasm.

Thank you for being responsive.

>
>-- 
>Jonathan S. Shapiro, Ph.D.
>Managing Director
>The EROS Group, LLC
>www.coyotos.org, www.eros-os.org