Re: [RFC][2.5 patch] K6-II/K6-II: enable X86_USE_3DNOW

Robert Love (rml@tech9.net)
14 Apr 2003 18:36:20 -0400


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.

> 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).

Robert Love

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