virtio-gpu: Add definition for resource_uuid feature

Add the VIRTIO_GPU_F_RESOURCE_UUID feature to enable the assignment
of resources UUIDs for export to other virtio devices.

Signed-off-by: Dorinda Bassey <dbassey@redhat.com>
Message-Id: <20241007070013.3350752-1-dbassey@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

hw/display/vhost-user-gpu.c

@@ -631,6 +631,14 @@ vhost_user_gpu_device_realize(DeviceState *qdev, Error **errp)
         error_report("EDID requested but the backend doesn't support it.");
         g->parent_obj.conf.flags &= ~(1 << VIRTIO_GPU_FLAG_EDID_ENABLED);
     }
+    if (virtio_has_feature(g->vhost->dev.features,
+        VIRTIO_GPU_F_RESOURCE_UUID)) {
+        g->parent_obj.conf.flags |= 1 << VIRTIO_GPU_FLAG_RESOURCE_UUID_ENABLED;
+    }
+    if (virtio_has_feature(g->vhost->dev.features,
+        VIRTIO_GPU_F_RESOURCE_UUID)) {
+        g->parent_obj.conf.flags |= 1 << VIRTIO_GPU_FLAG_RESOURCE_UUID_ENABLED;
+    }
 
     if (!virtio_gpu_base_device_realize(qdev, NULL, NULL, errp)) {
         return;

hw/display/virtio-gpu-base.c

@@ -235,6 +235,9 @@ virtio_gpu_base_get_features(VirtIODevice *vdev, uint64_t features,
     if (virtio_gpu_context_init_enabled(g->conf)) {
         features |= (1 << VIRTIO_GPU_F_CONTEXT_INIT);
     }
+    if (virtio_gpu_resource_uuid_enabled(g->conf)) {
+        features |= (1 << VIRTIO_GPU_F_RESOURCE_UUID);
+    }
 
     return features;
 }

include/hw/virtio/virtio-gpu.h

@@ -98,6 +98,7 @@ enum virtio_gpu_base_conf_flags {
     VIRTIO_GPU_FLAG_CONTEXT_INIT_ENABLED,
     VIRTIO_GPU_FLAG_RUTABAGA_ENABLED,
     VIRTIO_GPU_FLAG_VENUS_ENABLED,
+    VIRTIO_GPU_FLAG_RESOURCE_UUID_ENABLED,
 };
 
 #define virtio_gpu_virgl_enabled(_cfg) \
@@ -114,6 +115,8 @@ enum virtio_gpu_base_conf_flags {
     (_cfg.flags & (1 << VIRTIO_GPU_FLAG_CONTEXT_INIT_ENABLED))
 #define virtio_gpu_rutabaga_enabled(_cfg) \
     (_cfg.flags & (1 << VIRTIO_GPU_FLAG_RUTABAGA_ENABLED))
+#define virtio_gpu_resource_uuid_enabled(_cfg) \
+    (_cfg.flags & (1 << VIRTIO_GPU_FLAG_RESOURCE_UUID_ENABLED))
 #define virtio_gpu_hostmem_enabled(_cfg) \
     (_cfg.hostmem > 0)
 #define virtio_gpu_venus_enabled(_cfg) \