[OASIS Issue Tracker] (VIRTIO-132) ccw: handling of more than 64 virtqueues

[OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>]

     [ https://issues.oasis-open.org/browse/VIRTIO-132?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Cornelia Huck updated VIRTIO-132:
---------------------------------

    Fix Version/s: virtio 1.1 cs01

> ccw: handling of more than 64 virtqueues
> ----------------------------------------
>
>                 Key: VIRTIO-132
>                 URL: https://issues.oasis-open.org/browse/VIRTIO-132
>             Project: OASIS Virtual I/O Device (VIRTIO) TC
>          Issue Type: Bug
>    Affects Versions: virtio 1.0 cs01, virtio 1.0 cs02
>         Environment: Cornelia Huck <cornelia.huck@de.ibm.com>
>            Reporter: Cornelia Huck
>            Assignee: Cornelia Huck
>             Fix For: virtio 1.1 cs01
>
>
> For virtio-ccw devices using classic queue indicators, we cannot handle devices with more than 64 queues as the indicator value is a 64 bit integer and we would not be able to notify for the higher number virtqueues. The driver needs to use two-stage indicators if a device has more than 64 virtqueues.



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