This module implements a buddy allocator, an efficient scheme for managing physical memory. In this allocator, memory is broken up into a number of blocks, each of which is a power-of-2 frames in size. A block of size 2^^n frames is said to be of order n:


Represents a stack, either in kernel-space or user-space. Stacks are allocated in “slots” of fixed size, but only a subset of the slot may be mapped initially (to reduce physical memory usage). Stacks can’t grow above the size of their slot.