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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!kitty.ksu.ksu.edu!news
- From: probreak@kitty.ksu.ksu.edu (James Michael Chacon)
- Newsgroups: comp.os.linux
- Subject: Re: Linux 0.99 FPU question
- Date: 18 Dec 1992 00:35:37 -0600
- Organization: Kansas State University
- Lines: 39
- Message-ID: <1grrfpINN702@kitty.ksu.ksu.edu>
- References: <1992Dec18.000355.18823@klaava.Helsinki.FI> <89Rz03zHc40w00@amdahl.uts.amdahl.com>
- NNTP-Posting-Host: kitty.ksu.ksu.edu
- Keywords: LINUX, FPU
-
- garyf@uts.amdahl.com (Gary Faulkner) writes:
-
- >Hello all,
-
- >After finally getting 0.99 up (and STILL running!!), I now have a
- >fairly big question, related to how I got 0.99 up.
-
- >First, I had to rebuild my kernel with FPU-emulation in, even though
- >I have a 486-DX (i.e., I have a real FPU). Once I did that (actually,
- >the only change I made), the 0.99 kernel came right up.
-
- >So, I am left with the question...why?? I read somewhere that even if
- >you have FPU emulation in the kernel, that Linux will only use it if
- >there isn't a real FPU. When does it detect the FPU (source file
- >would be fine...if it really is in 808x6 assembler, I'll just get the
- >old assembler book out and figure out what it is doing)????
-
- >Even better, does anyone have an idea about why I am having to have
- >FPU emulation in my kernel? I realize that not many people (guessing
- >here) have 486's running linux, but if so, has anyone else tried NOT
- >including the FPU-emu stuff in their kernel?
-
- >I'd hate to think that I'm using the FPU-emu when I *really* don't
- >have to.
-
- >Thanks!!
-
- >--
- >Gary Faulkner -- My views are no more Amdahl's than Amdahl's views are mine.
-
- > Brought to you by the letter 'G'.
-
-
-
- I have a 486-33 running 0.99 right now. I could have sworn I didn't compile
- in the FPU support. I will try recompiling and get back to everyone about
- this. Otherwise the kernel runs fine and I have had no problems.
-
- James
-