Page table

Relationship between pages addressed by virtual addresses and the pages in physical memory, within a simple address space scheme. Physical memory can contain pages belonging to many processes. Pages can be held on disk if seldomly used, or if physical memory is full. In the diagram above, some pages are not in physical memory.

Actions taken upon a virtual to physical address translation. Each translation is restarted if a TLB miss occurs, so that the lookup can occur correctly through hardware.

Two-level page table structure in x86 architecture (without PAE or PSE).

Three-level page table structure in x86 architecture (with PAE, without PSE).

A page table is the data structure used by a virtual memory system in a computer operating system to store the mapping between virtual addresses and physical addresses. Virtual addresses are used by the accessing process, while physical addresses are used by the hardware, or more specifically, by the RAM subsystem.

单词	Page Table Entry
释义	Page Table Entry 原声例句去空白轴版本 Assume page table entries have eight status bits. 假定分页表头有八个状态位。英语百科 Page table A page table is the data structure used by a virtual memory system in a computer operating system to store the mapping between virtual addresses and physical addresses. Virtual addresses are used by the accessing process, while physical addresses are used by the hardware, or more specifically, by the RAM subsystem.
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Page Table Entry

Page table