Title Resolve Issue #3: add packed ring layout support
Description
Please vote Yes if you agree with all of the following.
If you disagree, please vote No.
If you don't have an opinion, please vote Abstain.

I move that:
The TC agrees to resolve the following specification issue:
Issue #3: add packed ring layout support
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This is a proposal to implement an alternative ring layout.
The idea is to have a r/w descriptor in a ring structure, replacing the used
and available ring, index and descriptor buffer.

This is more efficient and easier for devices to implement than the 1.0 layout.

Additionally, a new feature flag is proposed that makes devices promise to process descriptors
in-order. With this feature drivers can also be made simpler and more efficient.

Discussion and performance analysis of this is in Michael Tsirkin's kvm forum 2016 and 2017 presentations.

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The TC accepts the following proposed changes to the specification:
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Proposal: https://lists.oasis-open.org/archives/virtio/201803/msg00041.html

Note: should this proposal be accepted and approved, one or more
      claims disclosed to the TC admin and listed on the Virtio TC
      IPR page https://github.com/oasis-tcs/virtio-admin/blob/master/IPR.md
      might become Essential Claims.
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The TC agrees to include the above change(s) in specification version(s) "virtio-v1.1-cs01", and future versions of the
specification.

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Reminder: A Voting Member must be active in a TC to maintain voting rights.  As
the Virtio TC has adopted a standing rule to conduct business only by
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in two consecutive Work Product Ballots loses his or her voting rights at the
close of the second ballot missed.

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Ballot Options Ballot has closed
[ ] Yes
[ ] No
[ ] Abstain
Opening Date Fri, Mar 9 2018 4:30 pm EST
Closing Date Fri, Mar 16 2018 4:30 pm EDT
Ballot has closed.

Referenced Items

Name Type Date Actions

03177: Resolve Issue #3: add packed ring layout support

Document (Archive)

2018-03-16