Processor virtualization for secure mobile terminals

  • Authors:
  • Hiroaki Inoue;Junji Sakai;Masato Edahiro

  • Affiliations:
  • NEC Corp., Kanagawa, Japan;NEC Corp., Kanagawa, Japan;NEC Corp., Kanagawa, Japan

  • Venue:
  • ACM Transactions on Design Automation of Electronic Systems (TODAES)
  • Year:
  • 2008

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Abstract

We propose a processor virtualization architecture, VIRTUS, to provide a dedicated domain for preinstalled applications and virtualized domains for downloaded native applications. With it, security-oriented next-generation mobile terminals can provide any number of domains for native applications. VIRTUS features three new technologies, namely, VMM asymmetrization, dynamic interdomain communication (IDC), and virtualization-assist logic, and it is first in the world to virtualize an ARM-based multiprocessor. Evaluations have shown that VMM asymmetrization results in significantly less performance degradation and LOC increase than do other VMMs. Further, dynamic IDC overhead is low enough, and virtualization-assist logic can be implemented in a sufficiently small area.