crosvm vs XenServer

crosvm is a free, open-source virtual machine monitor written in Rust for running Linux and Android guest systems in sandboxed environments. Developed for ChromeOS, it is also used in TerminalApp on Android, Cuttlefish, and Windows. Each virtual device runs in its own Minijail sandbox by default, with syscall policies, namespaces, seccomp filters, and dropped capabilities contributing to isolation. Supported CPU architectures are x86_64, aarch64, and riscv64. The project lists KVM, Gunyah, GenieZone, and Halla for Linux or Android, and WHPX and HAXM for Windows. Virtio devices cover networking, storage, GPU, audio, filesystems, console, RNG, ballooning, vsock, TPM, and video. Block storage supports raw, qcow2, zstd, and Android sparse formats. Linux hosts need kernel 4.14 or newer with KVM support; some devices have additional host requirements. The project documents obtaining crosvm from its source repository and building it with Cargo. SCSI, video, shared host directories via virtio-pmem, and snapshotting are marked experimental or highly experimental.

XenServer has no write-up on Specifiction yet; its figures are above.