Xen on ARM Update
summary
Xen runs on ARM upstream in Linux 3.11 as Dom0 or DomU 32‑ and 64‑bit, Xen 4.3 supports ARMv7 and ARMv8 and a Xen 4.4 release is planned; ports target Versatile Express, QEMU/ARM, Coxida Midway and CubieBoard2. Kernel work ports a software IOTLB and abandons the rigid one-to-one workaround for dom0, yielding native network throughput on a quad‑core Cortex‑A15 1.5 GHz testboard with <2% CPU overhead. Remaining gaps: device assignment, IOMMU drivers, live migration and tooling.
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chapters (11)
- 0:00Start
- 0:17Achievements of one year
- 2:50Hardware support
- 3:27Upstream features
- 4:40Coming in Xen 4.4
- 6:54The best solution: IOMMU
- 8:08The workaround: Domo 1:1 mapping
- 9:32The alternative: SWIOTLB
- 15:05SWIOTLB: the compromise
- 17:17How can you help?
- 23:52DEMO
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