7447A strange problem with MSR:POW (WAS: can't boot 2.6.17-rc1)

[Benjamin Herrenschmidt]

On Fri, 2006-04-14 at 12:07 -0700, Paul Mackerras wrote:
> Becky Bruce writes:
> 
> > Actually, I think the problem is that the code linux is using to turn  
> > on nap mode is not guaranteed to put the processor in nap mode by the  
> > time the blr in ppc6xx_idle occurs.
> 
> Thanks, Becky.
> 
> This patch fixes it for me.  Comments, anyone?

Looks good to me except that we need the same for ppc64 since the 970
theorically has the same problem...

Ben.