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Subject: RE: [virtio-comment] Re: [virtio] Re: [PATCH v10 04/10] admin: introduce virtio admin virtqueues
> From: Stefan Hajnoczi <stefanha@redhat.com> > Sent: Tuesday, March 7, 2023 2:04 PM > An alternative is unconditional out-of-order completion, where there are no > per-command ordering rules. The driver must wait for a command to complete > if it relies on the results of that command for its next command. I like this > approach because it's less complex in the spec and for device implementers, > while the burden on the driver implementer is still reasonable. +1. This has best of both. 1. Command ordering knowledge and hence the decision left to the one which issues them. (driver). 2. Ability to execute multiple unrelated commands using a single AQ. 3. stateless device in AQ command execution
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