drm/nv50-nvc0: explicitly map notifier bo into channel vm

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_notifier.c b/drivers/gpu/drm/nouveau/nouveau_notifier.c
index 81b54e0..6abdbe6 100644
--- a/drivers/gpu/drm/nouveau/nouveau_notifier.c
+++ b/drivers/gpu/drm/nouveau/nouveau_notifier.c
@@ -34,6 +34,7 @@
 nouveau_notifier_init_channel(struct nouveau_channel *chan)
 {
 	struct drm_device *dev = chan->dev;
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	struct nouveau_bo *ntfy = NULL;
 	uint32_t flags, ttmpl;
 	int ret;
@@ -58,14 +59,22 @@
 	if (ret)
 		goto out_err;
 
+	if (dev_priv->card_type >= NV_50) {
+		ret = nouveau_bo_vma_add(ntfy, chan->vm, &chan->notifier_vma);
+		if (ret)
+			goto out_err;
+	}
+
 	ret = drm_mm_init(&chan->notifier_heap, 0, ntfy->bo.mem.size);
 	if (ret)
 		goto out_err;
 
 	chan->notifier_bo = ntfy;
 out_err:
-	if (ret)
+	if (ret) {
+		nouveau_bo_vma_del(ntfy, &chan->notifier_vma);
 		drm_gem_object_unreference_unlocked(ntfy->gem);
+	}
 
 	return ret;
 }
@@ -78,6 +87,7 @@
 	if (!chan->notifier_bo)
 		return;
 
+	nouveau_bo_vma_del(chan->notifier_bo, &chan->notifier_vma);
 	nouveau_bo_unmap(chan->notifier_bo);
 	mutex_lock(&dev->struct_mutex);
 	nouveau_bo_unpin(chan->notifier_bo);
@@ -125,7 +135,7 @@
 		offset  = chan->notifier_bo->bo.offset;
 	} else {
 		target = NV_MEM_TARGET_VM;
-		offset = chan->notifier_bo->vma.offset;
+		offset = chan->notifier_vma.offset;
 	}
 	offset += mem->start;