[virtio-dev] Re: [virtio-comment] [PATCH 0/5] virtio: introduce SUSPEND bit and vq state

Michael S. Tsirkin
2023-09-06T08:30:04Z

On Wed, Sep 06, 2023 at 04:16:32PM +0800, Zhu Lingshan wrote:
> This series introduces
> 1)a new SUSPEND bit in the device status
> Which is used to suspend the device, so that the device states
> and virtqueue states are stabilized.
>
> 2)virtqueue state and its accessor, to get and set last_avail_idx
> and last_used_idx of virtqueues.
>
> The main usecase of these new facilities is Live Migration.
>
> Future work: dirty page tracking and in-flight descriptors.

oh that answers my question - it's not covered.
I don't think we can merge this without in-flight descriptor
support.

> This series addresses many comments from Jason, Stefan and Eugenio
> from RFC series.
>
> Zhu Lingshan (5):
> virtio: introduce vq state as basic facility
> virtio: introduce SUSPEND bit in device status
> virtqueue: constraints for virtqueue state
> virtqueue: ignore resetting vqs when SUSPEND
> virtio-pci: implement VIRTIO_F_QUEUE_STATE
>
> content.tex | 118 ++++++++++++++++++++++++++++++++++++++++++++++
> transport-pci.tex | 18 +++++++
> 2 files changed, 136 insertions(+)
>
> --
> 2.35.3
>
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