A Virtio Message Based Transport - Bertrand Marquis, Arm

A Virtio Message Based Transport - Bertrand Marquis, Arm
Existing virtio transports are based on a PCI bus or MMIO and work well when the hardware is emulated (for example in Qemu) or when a trap and emulate handling is easily possible. But for a type 1 hypervisor like Xen or between heterogeneous systems, it becomes really complex to use existing Virtio transports for device emulation. During this presentation, I will cover: - The challenges faced by Xen to support existing virtio transports. - How a message based transport could address these challenges. - Detail the proposal for a new fully message based Virtio transport. - How FF-A standard can offer an hypervisor agnostic solution to support this transport.