As an endless subject, we need to modernize Xen hypervisor code for future (and current !) needs. This ranges from performance to security including software/hardware compatibility, ability to use modern CPU features, … We need to know agree on what to improve in Xen, and eventually how to plan to work on it (in a actionable way) and priorities, discuss on designs …

Some topics :

• AMD EPYC (ABI ?)
• Modernizing Xen P2M code
• Secure Boot
• Xen toolstack ABI
• New Xen guest ABI (“HVMv2”)
• Nested Virtualization
• NUMA-awareness
• Xen IOMMU code and PV-IOMMU
  …
  (note that some subjects are intertwined and inter-dependant)