Xen Project Releases Xen 4.22, Strengthening Open Source Virtualization for Cloud, Embedded and Automotive Systems

Latest release adds new x86 capabilities, advances Arm and RISC-V support, improves Xenstore scalability, and continues modernization efforts

Summary

• The Xen project has announced the release of Xen 4.22, introducing key hardware enablement, including AMD Zen 5 support, guest suspend/resume power management for Arm, and SSTC timing extensions advancing RISC-V guest virtualization.
• The release improves core platform performance and stability by preventing guest resource overconsumption in cloud environments using new Xenstore quotas while removing deprecated legacy interfaces.
• Strengthened functional safety and automotive adoption is enhanced through functional safety testing with new software-in-the-loop tooling, supported by partners including EPAM, Ford, Honda, Renesas, and Vates.

SAN FRANCISCO, July 30, 2026 – The Xen Project, an open source virtualization platform hosted by the Linux Foundation, today announced the release of Xen 4.22, the latest version of the open source Xen hypervisor. The release builds on the momentum of recent versions with key technical improvements, including broadened hardware support, improved core infrastructure and enhanced system-wide performance.

Advancements in Xen 4.22 ensure that hypervisors meet the growing demands of modern data centers, cloud environments, the automotive industry, embedded applications, and more. With this release, Xen delivers targeted virtualization benefits across enterprise and safety-critical…