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Subject: Virtual I/O Device (VIRTIO) Version 1.0 Committee Specification 03 published by the VIRTIO TC

OASIS Members,

OASIS is pleased to announce the approval and publication of a new Committee Specification by the members of the VIRTIO TC:

Virtual I/O Device (VIRTIO) Version 1.0
Committee Specification 03
02 August 2015


This document describes the specifications of the “virtio” family of devices. These devices are found in virtual environments, yet by design they look like physical devices to the guest within the virtual machine - and this document treats them as such. This similarity allows the guest to use standard drivers and discovery mechanisms.

The purpose of virtio and this specification is that virtual environments and guests should have a straightforward, efficient, standard and extensible mechanism for virtual devices, rather than boutique per-environment or per-OS mechanisms.

Description of the TC: 

The goal of the OASIS Virtual I/O Device (VIRTIO) TC is to simplify virtual devices, making them more extensible and more recognizable.

The TC intends to define formal specifications for virtual device buses (including PCI) for a variety of devices, including network devices. Specification development will be based upon the "Virtio PCI Card Specification" v0.9.5, seeking solutions that support portability, simplicity, least-surprise for driver authors, extensibility, and performance. The specification will also document existing implementations and practice. 

The prose specifications and related files are available here:

Editable source  (Authoritative):



Example driver listing: 

Distribution ZIP file

For your convenience, OASIS provides a complete package of the prose specification and related files in a ZIP distribution file. You can download the ZIP file here:


Members of the OASIS Virtual I/O Device (VIRTIO) TC [1] approved this specification by Special Majority Vote. The specification had been released for public review as required by the TC Process [2]. The vote to approve as a Committee Specification passed [3], and the document is now available online in the OASIS Library as referenced above.

Our congratulations to the TC on achieving this milestone and our thanks to the reviewers who provided feedback on the specification drafts to help improve the quality of the work.

========== Additional references:

[1] OASIS Virtual I/O Device (VIRTIO) TC

[2] Public reviews: 
30-day public review, 24 December 2013: https://lists.oasis-open.org/archives/members/201312/msg00013.html
- Comment resolution log: http://docs.oasis-open.org/virtio/virtio/v1.0/csprd01/virtio-v1.0-csprd01-comment-resolution-log.xlsx 

15-day public review, 31 March 2014: https://lists.oasis-open.org/archives/members/201403/msg00014.html
- Comment resolution log: http://docs.oasis-open.org/virtio/virtio/v1.0/csprd02/virtio-v1.0-csprd02-comment-resolution-log.xlsx

15-day public review, 11 July 2014: https://lists.oasis-open.org/archives/members/201407/msg00007.html
- Comment resolution log: http://docs.oasis-open.org/virtio/virtio/v1.0/csprd03/virtio-v1.0-csprd03-comment-resolution-log.xls

15-day public review, 18 June 2015: https://lists.oasis-open.org/archives/members/201407/msg00007.html
- Comment resolution log: http://docs.oasis-open.org/virtio/virtio/v1.0/csprd04/virtio-v1.0-csprd04-comment-resolution-log.txt 

[3] Approval ballot: 


Chet Ensign
Director of Standards Development and TC Administration 
OASIS: Advancing open standards for the information society

Primary: +1 973-996-2298
Mobile: +1 201-341-1393 

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