Dynamic security domain scaling on embedded symmetric multiprocessors

Hiroaki Inoue*, Tsuyoshi Abe, Kazuhisa Ishizaka, Junji Sakai, Masato Edahiro

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We propose a method for dynamic security-domain scaling on SMPs that offers both highly scalable performance and high security for future high-end embedded systems. Its most important feature is its highly efficient use of processor resources, accomplished by dynamically changing the number of processors within a security-domain (i.e., dynamically yielding processors to other security-domains) in response to application load requirements. Two new technologies make this scaling possible without any virtualization software: (1) self-transition management and (2) unified virtual address mapping. Evaluations show that this domain control provides highly scalable performance and incurs almost no performance overhead in security-domains. The increase in OSs in binary code size is less than 1.5%, and the time required for individual state transitions is on the order of a single millisecond. This scaling is the first in the world to make possible the dynamic changing of the number of processors within a security-domain on an ARM SMP.

Original languageEnglish
Article number24
JournalACM Transactions on Design Automation of Electronic Systems
Issue number2
Publication statusPublished - 2009 Mar 1
Externally publishedYes


  • AMP
  • Dynamic security-domain scaling
  • SMP

ASJC Scopus subject areas

  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering


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