Abstract
XtratuM is an open source hypervisor that uses para-virtualization techniques designed to comply with safety critical real-time requirements. Several projects aimed to define a reference architecture for space on-board systems have adopted XtratuM as a virtualization layer in order to enforce the strong spatial and temporal isolation between software components that is required on real-time airborne systems. Given the shift in the general trend in processor development towards multicore processors, the European Space Agency (ESA) is commissioning a set of studies in order to evaluate their suitability for their use on the space market. This paper focuses on the porting of XtratuM to the LEON4 multicore processor, in the frame of a ESA study that pursues to assess its fitness for its use in future space missions.
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