Jason Thorpe <thorpej@nas.nasa.gov> writes:

> 
> What sort of interactions are there associated with doing:
> 
> machine powermac powerpc
> 
> ...I belive that causes config(8) to bring in both:
> 
> 	arch/powermac/conf/files.powermac
> and
> 	arch/powerpc/conf/files.powerpc
> 
> ...which would be wrong in that some unnecessary files would be included.

Worse than that, it causes duplicate definitions.  I already ran into
this, because changing the .h files as I suggested requires having a
`powerpc' link in the kernel compile directory.

> I wanted to solve this by creating sys/cpu/{m68k,powerpc}, but there were
> some interesting issues revolving around exporting header files, etc.

And sys/cpu/mips.

> Any thoughts on this?

I think we should `just do' sys/cpu.