[PATCH 4/5 v5] drm/virtio: enqueue virtio_gpu_create_context after the first 3D ioctl

[Gurchetan Singh]

For old userspace, initialization will still be implicit.

For backwards compatibility, enqueue virtio_gpu_cmd_context_create after
the first 3D ioctl.

v3: staticify virtio_gpu_create_context
    remove notify to batch vm-exit

Signed-off-by: Gurchetan Singh <gurchetansingh at chromium.org>
---
 drivers/gpu/drm/virtio/virtgpu_drv.h   |  2 --
 drivers/gpu/drm/virtio/virtgpu_ioctl.c | 10 +++++++---
 drivers/gpu/drm/virtio/virtgpu_kms.c   |  1 -
 3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 0596d9618554..9fdc3b4cef48 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -216,8 +216,6 @@ struct virtio_gpu_fpriv {
 /* virtio_ioctl.c */
 #define DRM_VIRTIO_NUM_IOCTLS 10
 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
-void virtio_gpu_create_context(struct drm_device *dev,
-			       struct drm_file *file);
 
 /* virtio_kms.c */
 int virtio_gpu_init(struct drm_device *dev);
diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index c1a6cb4ec375..2c182922ec78 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -33,8 +33,8 @@
 
 #include "virtgpu_drv.h"
 
-void virtio_gpu_create_context(struct drm_device *dev,
-			       struct drm_file *file)
+static void virtio_gpu_create_context(struct drm_device *dev,
+				      struct drm_file *file)
 {
 	struct virtio_gpu_device *vgdev = dev->dev_private;
 	struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
@@ -51,7 +51,6 @@ void virtio_gpu_create_context(struct drm_device *dev,
 	get_task_comm(dbgname, current);
 	virtio_gpu_cmd_context_create(vgdev, vfpriv->ctx_id,
 				      strlen(dbgname), dbgname);
-	virtio_gpu_notify(vgdev);
 	vfpriv->context_initiated = true;
 
 out_unlock:
@@ -99,6 +98,7 @@ static int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data,
 
 	exbuf->fence_fd = -1;
 
+	virtio_gpu_create_context(dev, file);
 	if (exbuf->flags & VIRTGPU_EXECBUF_FENCE_FD_IN) {
 		struct dma_fence *in_fence;
 
@@ -250,6 +250,7 @@ static int virtio_gpu_resource_create_ioctl(struct drm_device *dev, void *data,
 			return -EINVAL;
 	}
 
+	virtio_gpu_create_context(dev, file);
 	params.format = rc->format;
 	params.width = rc->width;
 	params.height = rc->height;
@@ -323,6 +324,7 @@ static int virtio_gpu_transfer_from_host_ioctl(struct drm_device *dev,
 	if (vgdev->has_virgl_3d == false)
 		return -ENOSYS;
 
+	virtio_gpu_create_context(dev, file);
 	objs = virtio_gpu_array_from_handles(file, &args->bo_handle, 1);
 	if (objs == NULL)
 		return -ENOENT;
@@ -371,6 +373,7 @@ static int virtio_gpu_transfer_to_host_ioctl(struct drm_device *dev, void *data,
 			 args->box.w, args->box.h, args->box.x, args->box.y,
 			 objs, NULL);
 	} else {
+		virtio_gpu_create_context(dev, file);
 		ret = virtio_gpu_array_lock_resv(objs);
 		if (ret != 0)
 			goto err_put_free;
@@ -471,6 +474,7 @@ static int virtio_gpu_get_caps_ioctl(struct drm_device *dev,
 	spin_unlock(&vgdev->display_info_lock);
 
 	/* not in cache - need to talk to hw */
+	virtio_gpu_create_context(dev, file);
 	virtio_gpu_cmd_get_capset(vgdev, found_valid, args->cap_set_ver,
 				  &cache_ent);
 	virtio_gpu_notify(vgdev);
diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 424729cb81d1..023a030ca7b9 100644
--- a/drivers/gpu/drm/virtio/virtgpu_kms.c
+++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
@@ -268,7 +268,6 @@ int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file)
 
 	vfpriv->ctx_id = handle + 1;
 	file->driver_priv = vfpriv;
-	virtio_gpu_create_context(dev, file);
 	return 0;
 }
 
-- 
2.25.0.265.gbab2e86ba0-goog