Solaris, each process is a "address space," consists of a logical partition, the Division, "Layers". The process address space debris through pmap (1), please refer to the suit. Memory management, data structures and code division Solaris platforms and platform-independent - concrete details. Memory management platform for a specific group of hat or hardware address translation layer. FreeBSD has a single address space OBUZADORAGON, vmspace section describes the process and the region is called, logically divided. Hardware - a component dependent "p map module (physical map) v map" routine processing hardware - independent of the data structure and components. Memory address space using a logical process to explain sections, called "Memory" to describe the process address space. Linux is in the process of the team to examine pmap address space.

Division Linux machines - Division relies on the machine - far from the scene of a high-level independent software layer. The Solaris, and FreeBSD for a large part of the code, for example, a page fault handling machinery - independence. Linux, the code to handle the error page - many machines to fit properly processed. This is the exact results that can be processed in the Linux code, not so much because the faster data paging code Most of the abstract (layer). However, the cost of hardware and major model changes are necessary changes to the code. Solaris changes in the same segment of the separation hat and pmap FreeBSD, respectively.

Segment, in the region, and the memory of the field is determined by:
This area is a virtual address. Their location is the object / file segments / regional / state memory card.

Solution.
The map size.
For example, the text of this program, this segment / regions / main memory. There are three mechanisms of the operating system to manage address space under the name of the data structure is very similar, but completely different. In addition, the Linux code is no longer the machine - so dependent on other operating systems two lawsuits said.