Re: [QEMU PATCH 1/1] virtgpu: do not destroy resources when guest suspend

[Gerd Hoffmann]

  Hi,

> > The guest driver should be able to restore resources after resume.
> 
> Thank you for your suggestion!
> As far as I know, resources are created on host side and guest has no backup, 
> if resources are destroyed, guest can't restore them.
> Or do you mean guest driver need to send commands to re-create resources 
> after resume?

The later.  The guest driver knows which resources it has created,
it can restore them after suspend.

> If so, I have some questions. Can guest re-create resources by using
> object(virtio_vpu_object) or others? Can the new resources replace the
> destroyed resources to continue the suspended display tasks after
> resume?

Any display scanout information will be gone too, the guest driver needs
re-create this too (after re-creating the resources).

take care,
  Gerd