Virtualization is a long established technology in the server world. It has been used for decades as an enabler for platform consolidation. In the recent years, the technology has also gained new public interest due to its availability for Desktop PC platforms. The fact that it can provide strong isolation between applications and that this level of isolation can be achieved with only a very small layer of trusted code has also raised interest from the security related field of applications.

The possibility to integrate multiple independent subsystems in a single physical machine could also prove beneficial for many safety-critical applications.However, in addition to the spatial isolation that virtualization readily provides, most of these applications also require some level of temporal determinism: Each subsystem typically interacts with a technical component and, consequently, it has to keep up with that component’s timing properties.

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