Virtual Switch for Secure VM to PCIe Coupling

The patent introduces a virtual switch as an intermediary component between virtual machines and PCIe devices. This virtual switch implements safety and security functions (such as ISO-26262 compliance and secure boot) while maintaining the high-speed data transmission capability of PCIe SR-IOV. The virtual switch acts as a mediator that ensures automotive requirements are met without sacrificing performance.

The system is segmented into distinct functional components: virtual machines, virtual switch, and PCIe devices. This segmentation allows the virtual switch to be specifically designed and certified for automotive safety and security requirements, while the PCIe devices can focus on providing high-speed data transmission. The separation enables independent optimization and certification of each component.

The virtual switch serves as an intermediary that manages PCIe bus access and traffic flow between virtual machines and PCIe devices. It implements deterministic scheduling and traffic prioritization to ensure guaranteed latency bounds while maintaining high communication efficiency. The virtual switch controls and regulates traffic to prevent bus overloading.

The virtual switch dynamically manages resource allocation and traffic prioritization based on real-time requirements. It can adjust bandwidth allocation, implement quality of service (QoS) policies, and respond to changing traffic patterns to maintain deterministic latency while optimizing communication efficiency for different virtual machines and applications.

The virtual switch segments the PCIe bus access and implements spatial isolation by creating separate virtual channels and queues for different virtual machines. It provides temporal isolation through deterministic scheduling that guarantees bounded latency for each virtual machine. This segmentation ensures that one virtual machine cannot interfere with or overload the PCIe bus access of another virtual machine.

The virtual switch implements different quality levels of service for different virtual machines based on their specific requirements. It can allocate different bandwidth guarantees, latency bounds, and priority levels to different virtual machines, providing customized isolation and performance characteristics tailored to each application's needs.