I_686 MMX / 3DNOW / SSE / SSE2 ?

[Ivan Voras]

Alexander Leidinger wrote:

> The patches which port the revamped FPU handling from DFly don't have
> this expensive behavior for every switch. AFAIR only when the kernel
> used the FPU some context is saved. It also allows to use SIMD
> instructions in the kernel (this may be beneficial in some places).

For what it's worth - it would be interesting to see if XOR calculations 
in GRAID3 or VINUM can be speeded up by using SSE (I think SSE3 is 
needed for 128 bit integer ops?)