Optimized copy&move (was: Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs)

[David Malone]

On Thu, Jan 18, 2007 at 11:16:19AM +1100, Bruce Evans wrote:
> - the FPU routines are faster on Athlons (XP and 64 at least), but these
>   didn't exist until 2001.  The introduction of these CPUs may have
>   been the trigger for turning off the FPU routines in -current in 2001.
>   Until then problems were limited to Pentium-1's since the dynamic
>   configuration prevented the routines being used on all other machines.

I think a very quirky K6-2 machine that I had let us reproduce the
problem fairly dependably and may have been part of the reason it
was finally turned off.

	David.