[ablankst]

Have you thought much about address space randomization? It's a reasonably effective security strategy, but it essentially requires enough unused bits in the address space. If you have a system with one big memory space, presumably your address space is now more precious, or do you still have enough bits for randomization (both in the local and the global spaces).

[willvarfar]

We have thought about it a lot :)

Being SAS and having PIC and data makes the way ASLR works different. But we're big fans of exploit mitigation techniques and I will be preparing a decent white paper or talk about it shortly.