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Subject: [OASIS Issue Tracker] (VIRTIO-13) Remove VIRTIO_F_NOTIFY_ON_EMPTY?


     [ https://tools.oasis-open.org/issues/browse/VIRTIO-13?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Tsirkin updated VIRTIO-13:
----------------------------------

    Fix Version/s: virtio 1.0 csprd01

>  Remove VIRTIO_F_NOTIFY_ON_EMPTY?
> ---------------------------------
>
>                 Key: VIRTIO-13
>                 URL: https://tools.oasis-open.org/issues/browse/VIRTIO-13
>             Project: OASIS Virtual I/O Device (VIRTIO) TC
>          Issue Type: Improvement
>            Reporter: Rusty Russell
>            Assignee: Rusty Russell
>             Fix For: virtio 1.0 csprd01
>
>
> Notify on empty means that the device interrupts even if it wouldn't normally, in the case where a normally-full virtqueue is empty.
> ISTR this was a performance hack; it's no longer used in Linux anyway, and performance issues may have been due to a race which sometimes lost interrupts :)



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