Re: [PATCH 1/1] virtio-gpu: CONTEXT_INIT feature

[Gerd Hoffmann <kraxel@redhat.com>]

> @@ -212,6 +212,8 @@ virtio_gpu_base_get_features(VirtIODevice *vdev, uint64_t features,
>          features |= (1 << VIRTIO_GPU_F_RESOURCE_BLOB);
>      }
>  
> +    features |= (1 << VIRTIO_GPU_F_CONTEXT_INIT);

This needs a config option, simliar to the other features.  It is a
guest-visible change so we must be able to turn it off for live
migration compatibility reasons.  We also need a compat property to
turn it off by default for 6.1 + older machine types.

> +    if (cc.context_init) {
> +        virgl_renderer_context_create_with_flags(cc.hdr.ctx_id,
> +                                                 cc.context_init,
> +                                                 cc.nlen,
> +                                                 cc.debug_name);

This requires a minimum virglrenderer version I guess?

> --- a/include/standard-headers/linux/virtio_gpu.h
> +++ b/include/standard-headers/linux/virtio_gpu.h

Separate patch please.
Also use scripts/update-linux-headers.sh for this.

take care,
  Gerd