Welcome to the Xen 3.3.0 download page! This release contains architectural improvements and new user-visible features including:

• Power management (P & C states) in the hypervisor
• HVM emulation domains (qemu-on-minios) for better scalability, performance and security
• PVGrub: boot PV kernels using real GRUB inside the PV domain
• Better PV performance: domain lock removed from pagetable-update paths
• Shadow3: optimisations to make this the best shadow pagetable algorithm yet, making HVM performance better than ever
• Hardware Assisted Paging enhancements: 2MB page support for better TLB locality
• CPUID feature levelling: allows safe domain migration across systems with different CPU models
• PVSCSI drivers for SCSI access direct into PV guests
• HVM framebuffer optimisations: scan for framebuffer updates more efficiently
• Device passthrough enhancements
• Full x86 real-mode emulation for HVM guests on Intel VT: supports a much wider range of legacy guest OSes
• New qemu merge with upstream development
• Many other changes in both x86 and IA64 ports
• RAS features: cpu and memory offlining
• Power management: improved frequency/voltage controls and deep-sleep
• support. Scheduler and timers optimised for peak power savings.
• Support for the Viridian (Hyper-V) enlightenment interface
• Many other changes in both x86 and IA64 ports
• Xen 3.3 Datasheet