> OK, assuming there is a way to reliably identify genuine Cyrix 6x86
> processors (which I'm pretty sure there is), what other capabilityes
> and/or opcodes are missing, which are present in the Pentium, and
> which make a difference to the kernel code (and which could
> potentially make a difference if we were to rely on some 586-specific
> capability or opcode in I586_CPU or higher versions of the kernel)?

There's cpuid, but we mentioned that, there's also the P5 counters,
though I admit that's doubtful, because they weren't documented for
the P5. Now, I was *sure* that there was something else, but I can't
seem to find it anymore.. If there's nothing else, night as well change
is to 586_CLASS. Unless the P5 counters are going to be used.

- Frank