| Abstract
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The ARINC 653-based AIR (ARINC 653 in Spac … The ARINC 653-based AIR (ARINC 653 in Space Real-Time Operating System) architecture, developed as a response to the interest of the aerospace industry in adopting the concepts of Integrated Modular Avionics (IMA), proposes a partitioned environment, observing strict temporal and spatial segregation, in which partitions are able to use different (real-time) operating systems and host applications of different criticality levels. This paper centers on recent enhancements to the AIR architecture, like the AIR POS Adaptation Layer (PAL), which aim at optimizing the development and integration processes with the flexible support to new partition operating systems (POS) in mind. We also discuss the current efforts, which already benefit from the properties of the AIR Technology, to integrate Linux as a POS, exploiting the concepts of the paravirtualization interface currently provided by the Linux kernel. ce currently provided by the Linux kernel.
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