Messages in this thread | | | Date | Wed, 10 Dec 2003 23:08:38 -0800 | From | "Martin J. Bligh" <> | Subject | Re: PROBLEM: Linux 2.6.0-test11 only lets me use 1GB out of 2GB ram. |
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--William Lee Irwin III <wli@holomorphy.com> wrote (on Wednesday, December 10, 2003 21:41:11 -0800):
> On Thu, Dec 11, 2003 at 12:33:39AM -0500, Ed Sweetman wrote: >> I thought highmem wasn't necesarily needed for memory <=2GB? Highmem >> incurs some performance hits doesn't it and so the urge to move to it >> with only 2GB is not very attractive. Anyways i'm just interested in if >> that's the case or not since 2GB is easy to get to these days and i had >> heard that highmem could be avoided passed the 1GB barrier. > > You're probably thinking of 2:2 split patches. > > 2:2 splits are at least technically ABI violations, which is probably > why this isn't merged etc. Applications sensitive to it are uncommon. > > Yes, the SVR4 i386 ELF/ABI spec literally mandates 0xC0000000 as the > top of the process address space.
You mean like we place the stack in the "ABI compliant place"? Yeah, right ;-)
M.
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