NDLI: The interval page table: virtual memory support in real-time and memory-constrained embedded systems

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The interval page table: virtual memory support in real-time and memory-constrained embedded systems

Content Provider	ACM Digital Library
Author	Petrov, Peter Zhou, Xiangrong
Abstract	We present a novel page table organization for real-time and memory-constrained embedded systems. Increasingly many high-end embedded processors offer virtual memory support in the form of hardware Memory Management Unit. To implement virtual memory support, however, the system software needs to maintain a page table per task, which captures the virtual to physical page translation information. Page tables have been traditionally designed for general-purpose systems where their size and real-time performance have not been of primary importance; the average performance of page table traversal has been the major concern. Many embedded systems, however, impose strict real-time requirements coupled with limited memory resources. To address this problem, we propose a new page table organization, which not only requires significantly less memory than the traditional page tables, but also enables a very fast and deterministic hardware-based page table lookup. This is achieved by exploiting application knowledge regarding the memory footprint of the program under execution.
Starting Page	294
Ending Page	299
Page Count	6
File Format	PDF
ISBN	9781595938169
DOI	10.1145/1284480.1284559
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2007-09-03
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Memory management Page table Real-time embedded systems
Content Type	Text
Resource Type	Article

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