RE: 3DNow! patches on Winchip.

Jakma, Paul (Paul.Jakma@compaq.com)
Thu, 30 Dec 1999 15:42:03 -0000


> a win to use the 3dnow code then use it. Note that there is some stuff
> pending (hopefully for 2.4.0) that allows you to plug in
> multiple memcpy
> routines and handle the choice per cpu.

when you say "plug-in", do you mean to make it easy to plug-in per-cpu code
at compile time, (eg config choice) or boot-time?

I'd love to see the latter, as i tend to use one kernel build across
multiple machines (P54C, K6, K6-III). So ideally i'd like:

1. at compile time i have a choice something like
include optimised memcpy routines for:
O P5
O MMX only
O MMX + 3DNow
O Pentium III SSI
O Athlon

and i'd just select all the machines that i need. Then at boot kernel could
select appropriate memcpy method (is this possible though?).

regards,

paul jakma.

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