Dom0less and Deterministic: Building Safer Automotive Systems With Xen
Talkat Open Source Summit Japan + AI_dev: Open Source GenAI & ML Summit + Automotive Linux Summit 2025 · 2025-12-08..12-10·
summary
Xen 4.21 is presented as a dom0less architecture that boots statically defined VMs in parallel to give deterministic startup and bounded interrupt latency, shrinking the trusted computing base and attack surface for ISO 26262-style workflows. Demo runs on a Raspberry Pi: Zephyr as optional dom0, a Yocto driver domain exposing a GPIO temperature/humidity sensor, and a Linux UI domain — sensor data flows between isolated domains and the live demo succeeds. Members use a distributed CI to test every commit on custom hardware; AMD already has a safety concept approval.
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chapters (10)
- 0:00Xen in automotive
- 1:44Hypervisors in automotive
- 10:15DOM0 vs DOM0less
- 17:00Automotive boot patterns
- 23:19Safety requirements with Xen
- 26:50DOM0less demo on Pi
- 33:17Practical isolation and proof of concept details
- 35:27Security and safety with Xen
- 37:12Open source safety
- 39:21Q&A
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