[VIRTIO-23] Remove 'align' and use explicit addresses for used/avail. - OASIS Technical Committees Issue Tracker

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Details

Type: Improvement
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: virtio 0.9.X legacy
Fix Version/s: virtio 1.0 csprd01
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Proposal:

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proposal (bus-independent text):
http://markmail.org/search/?q=subject%3A%22%5BPATCH%20v2%5D%20virtqueue%3A%20flexible%20layout%2C%20size%2C%20alignment%22+list%3A%22org.oasis-open.lists.virtio%22

pci proposal is included in
https://tools.oasis-open.org/issues/browse/VIRTIO-21

Created separate issues for ccw: ~~VIRTIO-40~~ and mmio: ~~VIRTIO-41~~

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proposal (bus-independent text): http://markmail.org/search/?q=subject%3A%22%5BPATCH%20v2%5D%20virtqueue%3A%20flexible%20layout%2C%20size%2C%20alignment%22+list%3A%22org.oasis-open.lists.virtio%22 pci proposal is included in https://tools.oasis-open.org/issues/browse/VIRTIO-21 Created separate issues for ccw: VIRTIO-40 and mmio: VIRTIO-41

Description

There's no reason that used and avail parts of the virtqueue need to be consecutive. They should probably be on separate cachelines, but that decision may be better made by the guest (eg. a minimal bios implementation).
Add fields to program each part separately for each transport.

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Assignee:

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Reporter:

Rusty Russell (Inactive)

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Dates

Created:

14/Aug/13 7:05 AM

Updated:

27/Mar/14 12:00 AM

Resolved:

30/Sep/13 6:23 AM