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Re: MP kernel doesn't boot
Michael Lorenz <macallan%netbsd.org@localhost> wrote:
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> 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.
I opened a PR about what i think is the same issue in Jan of 2007 for
(it's still marked as open)
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