Do we need this junk?

Ed Schouten ed at
Fri Apr 6 20:17:51 UTC 2007

* Nikolas Britton <nikolas.britton at> wrote:
> The legacy bits don't upset me, what upsets me is sacrificing
> performance so we can  support a minority of legacy systems. IIRC? we
> could recode the Kernel for SSE2 math if the processor was guaranteed
> to have that SSE2. SSE2 adds 214 new instructions to the existing x86
> instruction set.

But SSE2 isn't even used in kernel space, not even on AMD64. As far as I
can see, the only exception I can see is pagezero. Just take a look at
src/sys/conf/ If it's not even possible to use SSE2 in
kernelspace on amd64, why would it be possible to do so on i386?

 Ed Schouten <ed at>
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