Messages in this thread | | | Date | Sat, 26 Apr 2003 01:42:51 +0100 (BST) | From | Hugh Dickins <> | Subject | Re: 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
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |