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sm-sorcery-bugs - [SM-Sorcery-Bugs] [Bug 5487] x86-64 (AMD Athlon 64, Athlon 64 FX and Opteron) optimisation

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  • From: bugzilla-daemon AT metalab.unc.edu
  • To: sm-sorcery-bugs AT lists.ibiblio.org
  • Subject: [SM-Sorcery-Bugs] [Bug 5487] x86-64 (AMD Athlon 64, Athlon 64 FX and Opteron) optimisation
  • Date: Thu, 26 Feb 2004 17:08:53 -0500

http://bugs.sourcemage.org/show_bug.cgi?id=5487





------- Additional Comments From gareth AT caffeinefuelled.com 2004-02-26 17:08
-------
It's fine to run a 32-bit kernel on the opteron / athlon 64. That's the
configuration I'm running at the moment.

I'd be interested to know: is selecting opteron / athlon 64 as your
architecture
in the kernel configuration all you need to do to compile a 64 bit kernel? Or
do
you need to pass in some more compiler flags or something? I tried building a
kernel with the architecture set to athlon 64, and it ran fine, but I couldn't
compile nVIDIA's 64 bit driver against it. I don't know if that's down to an
issue with the driver or with the kernel I compiled. Anyway, I reverted to an
Athlon-XP kernel and the 32 bit nVIDIA driver until I get time to play with
this
more.

As far as naming goes, it's all a bit pedantic. Apparently x86-64 or AMD64 are
the correct names for AMD's architecture. The linux kernel (according to
Linus)
calls both AMD's architecture and Intel's upcoming AMD ripoff chip "x86-64",
not
"x86_64". It seems the difference between the dash and the underscore is
significant.

This article about Linus's view on the subject is good reading:
http://www.theinquirer.net/?article=14301. He ain't happy with Intel ;)



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