What's in Virtio 1.2 - And What Isn't There
summary
Virtio 1.2 ships as a three‑year, pandemic‑delayed spec with nine new device types (persistent memory with DAX support, RPMSG-like GPIO events, IOMMU bypass for performance and legacy boot, vhost bypass and secure erase) plus packet-mode virtio sockets, header-split and GSO RX for net perf, zone block support, and an admin virtqueue for SR‑IOV migration and nested “virtio as transport.” The release is complete, some Linux drivers lag, and per-queue reset plus validation/forward‑compatibility work aims to make upgrades safer. Stable Diffusion is used only for illustrations.
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chapters (21)
- 0:00Introduction
- 0:40A year ago
- 2:27Persistent memory
- 3:26Single buffer
- 4:02Event queue
- 4:36Bypass
- 5:58PassThrough
- 6:23Stream
- 7:31Virtues
- 10:21New Devices
- 12:11Zone Block Devices
- 12:46Header Split
- 14:27Secure Encryption
- 15:44Migration
- 17:28VLANs
- 18:41Scalable Libraryization
- 22:27Hardware Changes
- 23:06Forward Compatibility
- 23:47GitHub Issue
- 24:50Development Mailing List
- 25:13Driver Development
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