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Page Table — Glossary | LowLevelCraft

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Glossary Term

Page Table

A data structure used by the OS and CPU to map virtual page numbers to physical frame numbers.

Page tables are typically multi-level on x86 (PML4, PDPT, PD, PT) to avoid storing enormous contiguous arrays. Walking them is cached by the TLB.

Related Terms

Virtual Memory TLB Page Fault

Used In

Understand Privileged Instructions: What Makes an Instruction 'Supervisor Only'Benchmark TLB (Translation Lookaside Buffer) Performance Simulate Page Table Walk for Virtual-to-Physical Translation Understand Spectre/Meltdown Side-Channel Attacks Implement fork() Semantics in Userspace Process Simulator How Memory Actually Works System Calls: The Gateway to the Kernel

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