Messages in this thread | | | Date | Tue, 26 Jan 1999 21:19:29 +0000 | From | Neil Conway <> | Subject | Re: Big Fix for 2.2.1 |
| |
Alan Cox wrote: > > > Alas, yes. If there is a power of two rule, it should surely be documented in > > the code. The existing code in page.h encourages people to make improper > > changes. The only other value I know of that works correctly is 0x80000000. > > Yep - and that documentation is indeed a real bug.
Using 0x80000000 is probably better anyway, no? Just how many megs less than 2GB does that give us - something like (2048-30) total? Possibly better than using 0x70000000, since the way I figure it, that robs us of 256 megs of process address space. If you want a single process to use as much RAM as possible (like nearly 2GB, and this isn't a silly case in numerical codes) then it seems like you're actually better off sacrificing the 30megs (or 50 or whatever) and using 0x8...
Neil ps: who volunteers to remove the man-trap in page.h?
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |