μRTZVisor: A Secure and Safe Real-Time Hypervisor
Centro Algoritmi, Universidade do Minho, 4800-058 Guimarães, Portugal
These authors contributed equally to this work.
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Received: 29 September 2017 / Accepted: 24 October 2017 / Published: 30 October 2017
Virtualization has been deployed as a key enabling technology for coping with the ever growing complexity and heterogeneity of modern computing systems. However, on its own, classical virtualization is a poor match for modern endpoint embedded system requirements such as safety, security and real-time, which are our main target. Microkernel-based approaches to virtualization have been shown to bridge the gap between traditional and embedded virtualization. This notwithstanding, existent microkernel-based solutions follow a highly para-virtualized approach, which inherently requires a significant software engineering effort to adapt guest operating systems (OSes) to run as userland components. In this paper, we present
RTZVisor as a new TrustZone-assisted hypervisor that distinguishes itself from state-of-the-art TrustZone solutions by implementing a microkernel-like architecture while following an object-oriented approach. Contrarily to existing microkernel-based solutions,
RTZVisor is able to run nearly unmodified guest OSes, while, contrarily to existing TrustZone-assisted solutions, it provides a high degree of functionality and configurability, placing strong emphasis on the real-time support. Our hypervisor was deployed and evaluated on a Xilinx Zynq-based platform. Experiments demonstrate that the hypervisor presents a small trusted computing base size (approximately 60KB), and a performance overhead of less than 2% for a 10 ms guest-switching rate.
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MDPI and ACS Style
Martins, J.; Alves, J.; Cabral, J.; Tavares, A.; Pinto, S. μRTZVisor: A Secure and Safe Real-Time Hypervisor. Electronics 2017, 6, 93.
Martins J, Alves J, Cabral J, Tavares A, Pinto S. μRTZVisor: A Secure and Safe Real-Time Hypervisor. Electronics. 2017; 6(4):93.
Martins, José; Alves, João; Cabral, Jorge; Tavares, Adriano; Pinto, Sandro. 2017. "μRTZVisor: A Secure and Safe Real-Time Hypervisor." Electronics 6, no. 4: 93.
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