Messages in this thread | | | Date | Sat, 23 Oct 1999 15:44:50 +0200 | From | Pavel Machek <> | Subject | Re: 2.3.32: CONFIG_BIGMEM does not compile on x86 |
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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 Hi! I'm a .signature virus! Copy me into your ~/.signature, please!
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