long long in kernel

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I'm looking at a kernel driver module which makes use of the gcc-ism of
"long long" to represent a 64-bit variable on 32-bit architectures. I
assume that this takes some kind of performance hit or other undesirable
side-effect, or else it would be used more often. :-) What are the reasons
to _not_ use this variable type within the kernel?

thanks,
-bp

--
B. James Phillippe		. bryan@terran.org
Software Engineer, WGT Inc.	. http://www.terran.org/~bryan


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• Next message: Brandon S. Allbery KF8NH: "Re: Ken Thompson interview in IEEE Computer magazine (fwd)"
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• Next in thread: Jes Sorensen: "Re: long long in kernel"
• Reply: Jes Sorensen: "Re: long long in kernel"
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