Adaptive Address Space Whitepaper

The layout for 64-bit MPAS processes is shown below:

(Note that the figure is not drawn to scale. The maximum stack sizes are decided based

on system tunables and process resource limits at the time of process start up).

For 64-bit MPAS processes, text can occupy one entire octant of address

space. This octant is not available to the process for any other use. All

processes running the same binary use share the text using the same virtual

address – without need for aliasing virtual addresses.

A 64-bit MPAS process can consume address space from octant 6 only by

providing special instructions to the operating system – this address space is not

consumed by MPAS applications by default.