Increasing the range of address-space layout randomization

> which I assume is an up to date reference on how you guys implement ASLR from a high level perspective

I doubt it's up-to-date, it probably dates back to the 2003 era. You're better off looking at the source code. There's newer documentation but it's mostly at https://forums.grsecurity.net/viewforum.php?f=7&sid=0... and doesn't cover those old portions.