[OASIS Issue Tracker] Commented: (VIRTIO-30) allow required features

[ http://tools.oasis-open.org/issues/browse/VIRTIO-30?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=34614#action_34614 ] 

Michael Tsirkin commented on VIRTIO-30:
---------------------------------------

a similar issue if some features are mutually exclusive.
we would want a way for device to report to driver
that it's trying to create an inconsistent configuration.


> allow required features
> -----------------------
>
>                 Key: VIRTIO-30
>                 URL: http://tools.oasis-open.org/issues/browse/VIRTIO-30
>             Project: OASIS Virtual I/O Device (VIRTIO) TC
>          Issue Type: New Feature
>         Environment: guest driver
>            Reporter: Michael Tsirkin
>            Assignee: Michael Tsirkin
>
> in the past we sometimes wanted an ability to make driver gracefully fail early in initialization
> if it does not recognize/support a feature.
> One such example we are introducing right now is the new VERSION_1 feature.

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