Xen Summit 2026

AGL SoDeV's Xen multi-domain architecture -- Dom0less, DomD, and DomA -- was designed and validated on the Renesas R-Car V4H (Sparrow Hawk), the AGL reference platform. This talk shares our experience porting that architecture to the Raspberry Pi 5, a low-cost, widely available board, to make SDV prototyping accessible beyond specialized automotive silicon.
We walk through the concrete challenges encountered: GPU virtualization, where virtio-gpu alone is insufficient and virgl is required for 3D acceleration under a Xen DomD-backed setup; securing virtio-mmio transport with Xen 4.18 grant tables in a driver-domain configuration; and resolving Android guest (DomA) boot failures rooted in autostart defaults, a config-variable regression, and GPT label mismatches after reflashing. We also cover Yocto/kernel alignment between the reference workspace and downstream RPi5 layers, both pinned to Scarthgap 5.0 LTS.
Beyond the fixes, we discuss what changes and what stays the same when porting a safety-oriented, automotive-grade Xen design from a reference SoC to commodity hardware -- and what that means for lowering the barrier to SDV experimentation and community contribution.