Explore a technical presentation that covers the implementation of virtio devices between Xen guests operating across heterogeneous CPU architectures (x86 and ARM). Learn how AMD collaborated with Linaro, ARM, and other partners to leverage the virtio-msg transport over PCIe links. The 28-minute talk details the QEMU and Linux/Kernel implementations required for this cross-architecture virtualization solution, along with the challenges encountered and plans for future development. This technical discussion provides valuable insights for those working with virtualization technologies in mixed-architecture environments.