Re: Atomic breakage?

[Robert Drehmel]

In <[EMAIL PROTECTED]>, John Baldwin wrote:
> Early Pentiums (<= P90) don't support CX8 or so I've heard, which make this
> slightly more complicated, as for a pentium we would have to use a function
> pointer that we setup during probe.  Also, during a SMP boot we would have to
> panic if CX8 wasn't enabled on all CPU's.

P75 (stepping 5): <FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>

cmpxchg8 was actually introduced with the Pentium processors,
as Mr. Wollman already wrote.

-- 
Robert S. F. Drehmel <[EMAIL PROTECTED]>

Real hackers run -current from punchcards.



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