Messages in this thread |  | | Date | Fri, 22 Sep 2000 00:30:27 +0200 | From | "Andi Kleen" <> | Subject | Re: Question: Using floating point in the kernel |
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On Thu, Sep 21, 2000 at 11:28:26PM +0100, Alan Cox wrote: > > > > It is sufficient when you do tsk->flags |= PF_USEDFPU first. > > > > > > Unless you sleep > > > > Unless I'm missing something the lazy FPU state save in the 2.4 switch_to will > > do the right thing at least on x86. Your kernel FPU state will overwrite the > > user FPU state in current, but that's ok because it is undefined anyways > > (and you restore the correct state when you wake up again) > > 2.4 maybe. Im not totally sure on that code. 2.2 wont
We were actually talking about a hypothetical fully interruptible 2.5 kernel.
-Andi
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