Re: Howto read a file off disk?

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Valdis.Kletnieksat_private

On Mon, 21 Jul 2003 07:27:17 CDT, Jesse Pollard said:
> On Friday 18 July 2003 11:34, Valdis.Kletnieksat_private wrote:
> > What about the use of SSE instructions to speed up the crypto hashing?  I
> > can't remember if that counts as floating point or not....
> 
> I'm not 100% sure, but I think those are included as part of the user space 
> support just like the floating point.

Well.. Yeah.  However, there's a general prohibition against using floating
point *inside the kernel*, so you may or may not be able to use SSE to
speed up stuff that's in (for example) the cryptoapi or 2.6 crypto/ code.

Back in April, there was a thread on LKML regarding __constant_memcpy
and how gcc needed a -fdontyoudareusefloatingpoint which might be
informative...