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

Hi @Parav

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

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(+)

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