Chapter 5. Virtual Memory

Table of Contents

Overview

Lazy Allocation Policy

Eager Reservation Policy

Unified Buffer Cache

Round-Robin Swapping

Page In and Page Out Clustering

Memory-Mapped Device Interface

Mach mmap MAP_PRIVATE Semantics and System V Release 4.0

Secure Shared Memory Segments

Shared Text Segments

Page Coloring

Caches

Kernel Memory Allocator

External Pager

Improved Memory Reclamation Policy

Rewrote Swap Allocation Mechanism