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Page attribute table

Index Page attribute table

The page attribute table (PAT) is a processor supplementary capability extension to the page table format of certain x86 and x86-64 microprocessors. [1]

10 relations: CPU cache, Memory type range register, Operating system, Page (computer memory), Page table, Pentium III, Processor supplementary capability, Write combining, X86, X86-64.

CPU cache

A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory.

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Memory type range register

Memory type range registers (MTRRs) are a set of processor supplementary capabilities control registers that provide system software with control of how accesses to memory ranges by the CPU are cached.

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Operating system

An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs.

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Page (computer memory)

A page, memory page, or virtual page is a fixed-length contiguous block of virtual memory, described by a single entry in the page table.

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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.

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Pentium III

The Pentium III (marketed as Intel Pentium III Processor, informally PIII) brand refers to Intel's 32-bit x86 desktop and mobile microprocessors based on the sixth-generation P6 microarchitecture introduced on February 26, 1999.

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Processor supplementary capability

A processor supplementary capability is a feature that has been added to an existing central processing unit design after the initial introduction of that design to the marketplace.

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Write combining

Write combining (WC) is a computer bus technique for allowing data to be combined and temporarily stored in a buffer the write combine buffer (WCB) to be released together later in burst mode instead of writing (immediately) as single bits or small chunks.

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X86

x86 is a family of backward-compatible instruction set architectures based on the Intel 8086 CPU and its Intel 8088 variant.

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X86-64

x86-64 (also known as x64, x86_64, AMD64 and Intel 64) is the 64-bit version of the x86 instruction set.

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Redirects here:

Page Allocation Table, Page Attribute Table.

References

[1] https://en.wikipedia.org/wiki/Page_attribute_table

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