Re: Intel floating-point initialization

H. Peter Anvin (
19 May 1998 11:13:05 GMT

Followup to: <>
By author: "Albert D. Cahalan" <>
In newsgroup:

> > So, it is not correct to reinitialize the FPU in the new process.
> > At least the FPU control word should be copied from the parent process.
> No, I don't think so. Current loader code on i386 resets the FPU control
> word to something sane. Elimination of that reset code would make the
> "used FPU" process bit actually mean something like it does on the SPARC.
> It ought to save a tiny bit of space and help performance a tiny bit too.

fork != exec.


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