Memory segmentation: Difference between revisions

Revision as of 20:14, 26 May 2005

Revision as of 20:23, 26 May 2005

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'''Segmentation''' is one of the most common ways to achieve [[memory protection]]; another common one is [[paging]]. Segmentation means that a part or parts of the memory will be sealed off from the currently running [[process]], through the use of [[hardware register]]s. If the data that is about to be read or written to is outside the permitted [[address space]] of that process, a [[segmentation fault]] will result.

Segmentation means that a part, or parts, of the memory is/are sealed off from the [[process]] currently running by two hardware [[hardware register|registers]]. If the data that is about to be read, or written to, is outside the permitted address space of that process, a [[general protection fault]] will fire. This should not be confused with the [[x86]]-[[processor]]s [[realmode]] segmentation.

This usage should not be confused with that of the [[memory segment]]s used by early [[x86]] processor architectures.

== See also ==

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* [[Text segment]]

* [[Data segment]]

* [[Segmentation fault]]

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