Messages in this thread |  | | | Date | Wed, 26 Jan 2005 21:28:56 -0800 | | From | William Lee Irwin III <> | | Subject | Re: don't let mmap allocate down to zero |
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On Wed, Jan 26, 2005 at 09:09:27PM -0800, William Lee Irwin III wrote: >> There's a long discussion here, in which no one appears to have noticed >> that SHLIB_BASE does not exist in mainline. Is anyone else awake here?
On Thu, Jan 27, 2005 at 12:18:56AM -0500, Dave Jones wrote: > It's an exec-shield'ism. Rik likely was working off a Red Hat/Fedora > kernel tree.
It does change things in a substantial way. Namely, the lower address space boundary doesn't exist in mainline at all, and so its enforcement requires introduction. Furthermore, mainline must concern itself with all Linux-supported architectures (not distro-supported architectures), not just ia32/x86-64, so there is also FIRST_USER_PGD_NR to take into account as opposed to pulling magic ia32/x86-64 -specific numbers out of a hat and splattering them all over core code. Not that you had anything to do with any of this.
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