[OASIS Issue Tracker] (VIRTIO-140) add reminder for future devices to avoid writeable 64 bit fields

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

    [ https://issues.oasis-open.org/browse/VIRTIO-140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=59410#comment-59410 ] 

Michael Tsirkin commented on VIRTIO-140:
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ballot started
https://www.oasis-open.org/apps/org/workgroup/virtio/ballot.php?id=2792


> add reminder for future devices to avoid writeable 64 bit fields
> ----------------------------------------------------------------
>
>                 Key: VIRTIO-140
>                 URL: https://issues.oasis-open.org/browse/VIRTIO-140
>             Project: OASIS Virtual I/O Device (VIRTIO) TC
>          Issue Type: Bug
>    Affects Versions: virtio 1.0 cs02
>         Environment: James Bottomley <jbottomley@odin.com>
>            Reporter: Michael Tsirkin
>             Fix For: virtio 1.0 cs03
>
>
> Problems happen if any config space action register is wider than 32 bits, because a 32 bit OS cannot now set it atomically. 
> See http://article.gmane.org/gmane.comp.emulators.virtio.devel/791



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