Re: MP kernel doesn't boot

[Michael Lorenz <macallan%netbsd.org@localhost>]

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Hello,

On May 2, 2008, at 15:21, Michael-John Turner wrote:
> On Fri, May 02, 2008 at 12:54:44PM -0400, Michael Lorenz wrote:
> > Well, the SM50 lacks a cache controller and thus doesn't have any  
> > cache
> > coherency support. The question should be why did it work in 2.0  
> > in the
> > first place.
>
> Interesting - I didn't realise that. I ran a system with a pair of  
> SM50s
> and it was rock solid with 2.0 with an SMP kernel.

The CPU has tiny L1 caches, gcc3 probably generated code that  
thrashed the caches enough to avoid coherency issues by accident.

have fun
Michael
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