Re: 2.3.32: CONFIG_BIGMEM does not compile on x86

Pavel Machek (pavel@suse.cz)
Sat, 23 Oct 1999 15:44:50 +0200


Hi!

> I prefer taking a "long long" and shifting it to a simple "long" pfn,
> simply because gcc is so horribly bad at dealing with "long long" (not
> entirely gcc's fault - it's hard to do a good job with two-register
> entities when the machine only has 6 usable registers for many things -
> but gcc does generate even worse code than it really should).
>
> That's what is going to happen to "page->offset" too - instead of
> extending the field to 64 bits and see gcc get a nervous breakdown (not to
> mention waste memory), the thing will just be a shifted value, giving a
> better dynamic range without the "long long" downsides.

Does that mean that we are going to get >2G file support on i386 in
2.4.X?
Pavel

-- 
I'm really pavel@ucw.cz. Look at http://195.113.31.123/~pavel.  Pavel
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