Being a Xen hypervisor 2026-06-22model: gpt-image-2 Life as a Xen hypervisor Life as a Xen hypervisor Domain model and privilege boundariesBoot modes and guest executionCPU scheduling and vCPU topologyMemory ownership and translationI/O paths and split driversDevice assignment and DMA isolationLive migration and state transferOperations, observability, and failure modes