Re: [2.1.105] Cyrix 6x86 reduced to 486

Alan Cox (alan@lxorguk.ukuu.org.uk)
Sat, 13 Jun 1998 03:04:33 +0100 (BST)


> 2.0.33+. I recently posted the 2.1.103+ version, but from the feedback I
> got (hush... none), it seems either its not a priority right now with all
> the push to get 2.1 stable and ready for 2.2, or I seriously screw-up and
> I'm being ignored ;-)

Linus said earlier he wanted the Cyrix stuff moved into asm/bugs.h so
as much as possible its in C. Thats ok since its before we run the
bogomips. Thats why I didnt touch your patch. El Penguino isnt going to
take it.

> for the CyrixInstead string (actually just for "Cyri"), if these chips
> also need the cpuid to be enabled, or use the Cyrix devid method of
> idetifying steps/revisions then they will not get identified correctly
> (though it should be safe for PII-BX).

The IDT chips can be set to

o MMX on/off
o Any CPUID string you like
o If they should emulate the 5/2 behaviour
o If they support CPUID
o If they support CMPXCHG8

So it can emulate most processors just fine 8)

Alan

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