HVM Dom0: Any unmodified OS as Dom0
summary
Prototype HVM dom0 runs an unmodified guest as dom0 by routing CPU/memory and I/O through EPT and VT-d passthrough and using virtio front/back channels for Xen backends; interrupt virtualization uses a local vAPIC with hypervisor‑owned LAPIC so dom0 controls IOAPIC semantics. Implementation reuses HVM domU infra, installs PV front drivers and native drivers in the guest, and needs userland tools and Xen KIMU porting for Windows. No Windows build or performance numbers yet; patches and slides are planned for the mailing list.
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chapters (14)
- 0:00Introduction
- 0:34History
- 2:14User Domains
- 3:16Why is Dom0 PV
- 4:51Limitations
- 6:26Improvements
- 7:43Flexibility
- 9:19Supported domains
- 10:13Benefits
- 11:34How it works
- 12:39Boot sequence
- 13:35Multiple OS
- 14:30ZenKimo
- 16:26Power Management
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