Computing device with safe and secure coupling between virtual machines and peripheral component interconnect express device

A vehicle, characterized in that the vehicle comprises an automotive computing device (CD) that is at least one of an automotive high-performance computer of the vehicle and an automotive zone controller of the vehicle, the vehicle comprising:

• a plurality of virtual machines (VMi);
• and
• a virtual switch (VS);
• characterized in that the virtual switch (VS) is an extension of a virtual machine manager (VMM) and is a single software component that is configured to provide a safe and secure coupling between the plurality of virtual machines (VMi) and at least one peripheral component interconnect express device (PCIe-D) configured to support single-root input/output virtualization, to which the computing device (CD) is connected, wherein the virtual switch (VS) exclusively controls access to the peripheral component interconnect express device (PCIe-D), wherein the virtual switch (VS) is configured to provide an isolation, with respect to time, of bus requests of the plurality of virtual machines (VMi)), wherein the virtual switch is configured to provide address translation between a corresponding plurality of virtual address spaces of the plurality of virtual machines and a plurality of respective physical addresses used for direct memory access transactions thereby eliminating a need for an input-output memory management unit, wherein the virtual switch (VS) is configured to provide a spatial isolation of the communication of the plurality of virtual machines (VMi) related to communication thereby ensuring that data to be received and data to be transmitted by any of the plurality of virtual machines is write protected and read protected with respect to any other of the plurality of virtual machines, and wherein the virtual switch uses a polling mode to eliminate an overhead associated with interrupt remapping.