The Xen Project, an open source hypervisor hosted at the Linux Foundation, today announced the release of Xen 4.21, which updates toolchain requirements across all architectures, improves runtime performance on x86 with smarter memory and cache handling, delivers enhanced security on Arm®-based devices, and adds early RISC-V enablement. This release marks another major modernization milestone for the Xen hypervisor, preparing the Xen Project to support automotive and embedded systems of the futu