On Mon, Apr 14, 2003 at 06:36:20PM -0400, Robert Love wrote:
> On Mon, 2003-04-14 at 18:21, Adrian Bunk wrote:
>
> > If my patch is wrong and this is a RTFM please give me a hint where to
> > find the "M".
>
> Patch looks right...
>
> > Questions:
> > Is it really correct to enable CONFIG_X86_USE_3DNOW?
>
> If you are right that the K6-2 and K6-3D support 3DNow!, then yes. At
> least its "correct" but it may not be optimal: I seem to recall 3DNow
> memory copies were not worthwhile on anything before an Athlon. Double
> check that, though.
It does, but Alan already explained why it doesn't make a difference.
> > Is the -march=k6-2 correct?
>
> Yes. Even if the above is true, splitting the K6 out like this is
> useful for the extra -march here. It certainly does not hurt (picking
> the original K6 will give proper support for the whole family, in
> needed).
>From a quick look of the gcc-3.2.2 sources it seems that except for the
3DNow! support gcc doesn't differenciate between K6 and K6-II, so this
change alone doesn't seem to make it worth adding a new processor type.
> Robert Love
cu
Adrian
--"Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Tue Apr 15 2003 - 22:00:36 EST