[OASIS Issue Tracker] (VIRTIO-58) clarify meaning of LEXX tags for transitional devices

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

     [ https://tools.oasis-open.org/issues/browse/VIRTIO-58?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Tsirkin updated VIRTIO-58:
----------------------------------

      Proposal: 
drop note from structures, if necessary add a legacy section per device
http://mid.gmane.org/1392104032-2526-4-git-send-email-mst@redhat.com

  was:
- in the pre-amble say "LEXX means: Little Endian for 1.0 interfaces and Guest Endian for Legacy interfaces".
- change balloon config from C struct to a table specifying endian-ness
  explicitly instead of LEXX.
- drop note from structures, if necessary add a legacy section per device
http://mid.gmane.org/1392104032-2526-2-git-send-email-mst@redhat.com
http://mid.gmane.org/1392104032-2526-3-git-send-email-mst@redhat.com
http://mid.gmane.org/1392104032-2526-4-git-send-email-mst@redhat.com

    Resolution: 
Change accepted on Virtio TC Meeting Minutes: Feb 25, 2014
Applied in revision r287

  was:
Change accepted on Virtio TC Meeting Minutes: Feb 25, 2014
Applied in revision r287

introduction: document that leXX can mean guest endian-ness

It has a different meaning in the legacy environments,
document this.

Resolves issues:
	VIRTIO-58

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>



> clarify meaning of LEXX tags for transitional devices
> -----------------------------------------------------
>
>                 Key: VIRTIO-58
>                 URL: https://tools.oasis-open.org/issues/browse/VIRTIO-58
>             Project: OASIS Virtual I/O Device (VIRTIO) TC
>          Issue Type: Improvement
>            Reporter: Michael Tsirkin
>            Assignee: Michael Tsirkin
>            Priority: Minor
>
> WD currently has a note on legacy endian-ness
> before each structure.
> This violates the clean separation of legacy
> in separate sections.
> It's not too bad but we can improve this
> before 1.0.
> For legacy it's mostly consistent:
> device specific stuff and in-memory stuff is native endian
> Exceptions:
> PCI common virtio header is little endian
> but it is not documented using a struct.
> (balloon is only exception).
> CCW already uses BEXX
> MMIO isn't using C structs at all.



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