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SubjectRe: TASK_UNMAPPED_BASE & stack location
On Fri, 25 Apr 2003, Martin J. Bligh wrote:
> >> 128Mb of it? The bottom page, or even a few Mb, sure ...
> >> but 128Mb seems somewhat excessive ..

Yes.

> > Considering that your process space is 4gig, and that that 128Mb doesn't
> > really exist anywhere (no RAM, no page table entries, nothing), it's
> > really not excessive.
>
> I need the virtual space.

Plus you would (very often) get more physical. i386 ELF text typically
begins at 0x08048000: putting stack just below text in many cases shares
page table between stack+text+data, and saves the page table at top of
user address space.

Hugh

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