Xen 4.15 Hypervisor Brings Live Updates To Xenstored

Out today is version 4.15 of the open-source Xen hypervisor. The focus of Xen 4.15 is on "broader accessibility, performance and security" with a number of noteworthy additions.

Among the work in store for the Xen 4.15 hypervisor is Arm support for device models in Dom0 as a tech preview, support for exporting Intel Processor Trace Data into tools within Dom0, Viridian enlightnements for guests with more than 64 vCPUs, Xenstored/Oxenstored now supports the "LiveUpdate" tech preview for deploying security fixes without restarting the host, a PV Shim mode for legacy PV guests on HVM-only systems, and support for unified boot images. With unified boot images, it's now possible to boot with a single EFI binary rather than going through GRUB multi-boot.

Xen has also been enjoying improvements on the functional safety front, continued VirtIO driver coverage, and advancing the RISC-V architecture support.

More details on today's Xen 4.15 hypervisor feature release via XenProject.org.