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

[Joakim Tjernlund]

Hi again

I trying to understand how the different mem*() and *_page() functions in arch/ppc/kernel/misc.S
and arch/ppc/lib/string.S works wrt data cache.

I found that on 8xx these are not used. Why? Are there 8xx variants that can't handle them?
Do 860 work with these?

Also, why is not dcbtst(write a cache line) used
in the different copy functions, copy_page()for example, instead of the COPY_16_BYTES macro?

  Jocke


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