24. FreeBSD Internals

24.1. The FreeBSD Booting Process

24.1.1. Loading a kernel

24.1.2. Determine the root filesystem

24.1.3. Initialize user-land things

24.1.4. Interesting combinations

24.2. PC Memory Utilization

24.3. DMA: What it Is and How it Works

24.3.1. A Sample DMA transfer

24.3.2. DMA Page Registers and 16Meg address space limitations

24.3.3. DMA Operational Modes and Settings

24.3.4. Programming the DMA

24.3.5. DMA Port Map

24.4. The FreeBSD VM System

24.4.1. Management of physical memory - vm_page_t

24.4.2. The unified buffer cache - vm_object_t

24.4.3. Filesystem I/O - struct buf

24.4.4. Mapping Page Tables - vm_map_t, vm_entry_t

24.4.5. KVM Memory Mapping

24.4.6. Tuning the FreeBSD VM system