Re: 2.1.97 SMP+UP works suddenly..+fpu_memcpy doesn't

Michael L. Galbraith (mikeg@weiden.de)
Thu, 23 Apr 1998 04:02:20 +0200 (MET DST)


On Wed, 22 Apr 1998, Gerhard Koerting wrote:

>
> > Thinking 'hmm.. what is different when fpu_memcpy is in play?', I can
> > only come up with one thing; the exception (device_not_available) which
> > happens upon first use of the FPU after a context switch.
>
> If you change fstenv/fsave to fnstenv/fnsave, fpu_memcpy should run with
> SMP too. I'm using that for a long time, but I don't know why this makes
> a difference.
>

Ah.. I had tried fsave->fnsave (added fwait too) but didn't know about
fstenv->fnstenv. I'll give that a try.

Thanks,

-Mike

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