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Task state segment

The task state segment (TSS) is a structure on x86-based computers which holds information about a task. It is used by the operating system kernel for task management. Specifically, the following information is stored in the TSS:

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Explore the main themes, entities and connections around Task state segment. Start with the topic map, then use the sections below for research and deeper semantic analysis.

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Overview

Location of the TSS

Task register

  • LTR Load task register

Register states

I/O port permissions

Inner-level stack pointers

Use of TSS in Linux

Exceptions related to the TSS

TSS in x86-64 mode

Advanced semantic analysis

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Map overview Semantic statistics

Task state segment

Nodes42
Edges41
Triples4
Avg. degree1.95
Density0.047619
Components1

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Important terminology Word statistics

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Important terminology

task tss hardware register stack port segment new switch bitmap permissions read program access kernel instruction operating pointer selector interrupt

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Windowsinstance ofNote that some modern operating systems0.80text
Linux do not use these fields in the TSS as they implement software task switching.Note that during a hardware task switchinstance ofNote that some modern operating systems0.80text
certain fields of the old TSS are updated with the CPU's current register contents before the values from the new TSS are readinstance ofNote that some modern operating systems0.80text
IN or OUTinstance ofwhen a program issues an x86 I/O port instruction0.80text

Related concept clusters Concept neighborhoods

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    Connections between topic areas Semantic bridges

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