Re: [RFC PATCH 0/5] virtio: introduce SUSPEND bit and vq state

["Zhu, Lingshan" <lingshan.zhu@intel.com>]

Hi @Parav

I remember you are interested in live migration, any comments?

Thanks
Zhu Lingshan

On 8/15/2023 3:28 AM, Zhu Lingshan wrote:
> This seires 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 stablized.
>
> 2)virtqueue state and accessors, to get and set last_avail_idx
> and last_used_idx of virtqueues.
>
> The main usecase of these new facilities is Live Migration.
>
> Furture work: dirty page tracking and in-flight descriptors.
>
> This is RFC, this series carries on Jason and Eugenio's pervious work.
>
> Any comments are welcome.
>
> Zhu Lingshan (5):
>    virtio: introduce SUSPEND bit in device status
>    virtio: introduce vq state as basic facility
>    virtio: The actions by the device upon SUSPEND
>    virtqueue: constraints for virtqueue state
>    virtio-pci: implement VIRTIO_F_QUEUE_STATE
>
>   content.tex       | 120 ++++++++++++++++++++++++++++++++++++++++++++++
>   transport-pci.tex |  15 ++++++
>   2 files changed, 135 insertions(+)