Memory

Virtual Memory

Maps memory addresses (virtual addresses) into physical addresses in hardware memory.

• Virtual address space is the set of ranges of virtual addresses that a process has access to

Page

Memory pages are fixed length contiguous blocks of virtual memory

• described by a single entry in a page table
• smallest unit of data

Page Fault

Type of interrupt, called trap, raised by hardware when accessing a memory page, but it isn't loaded into main memory.