Re: [VIRTIO GPU PATCH 1/1] virtio-gpu: Add new feature flag VIRTIO_GPU_F_FREEZING

[Gerd Hoffmann <kraxel@redhat.com>]

  Hi,

> +\item[VIRTIO_GPU_CMD_STATUS_FREEZING]
> +Notify freezing status through controlq.
> +Request data is \field{struct virtio_gpu_status_freezing}.
> +Response type is VIRTIO_GPU_RESP_OK_NODATA.
> +
> +Guest notifies QEMU if virtio-gpu is in freezing status or not in \field{freezing}.
> +zero means it is not in freezing status, none-zero is the opposite.
> +When guest is in freezing status, QEMU will not destroy resources.

This should be more clear which resources are meant here.  Just
resources created by VIRTIO_GPU_CMD_RESOURCE_CREATE_* commands?
Or all objects (including cursors, scanouts, 3D contexts, ...)?
Or some other set?

I've seen on the (code) patch discussion the topic of different
suspend modes (s3/s4) came up.
What was the conclusion there?
Should a note about this be added to the spec too?

take care,
  Gerd