dc* (Data Cache) instructions in mem*() and *_page() functions not used on 8xx

[Joakim Tjernlund]

> Joakim Tjernlund wrote:
>
> > It seems that even the newest 8xx chips still has problems. I did not expect that.
>
> It may be the parts are working fine.  I long ago removed the code necessary
> to detect the exception conditions when the cache instructions faulted, so
> I wouldn't expect them to work properly.

Aah, that would explain why __copy_tofrom_user doesn't work I guess. But the
rest seems to be fine. Maybe there should be a new config option that
would one could enable for modern 8xx CPUs? With a big warning sign of cource
and default to off. Maybe even add the missing exception handler?

   Jocke


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