1 files changed, 21 insertions, 3 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
index 979da1c246a5..e7af580ab977 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
@@ -830,6 +830,24 @@ int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
         if (unlikely(ret != 0))
                 goto out_unlock;
 
+        /*
+         * A gb-aware client referencing a shared surface will
+         * expect a backup buffer to be present.
+         */
+        if (dev_priv->has_mob && req->shareable) {
+                uint32_t backup_handle;
+
+                ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
+                                            res->backup_size,
+                                            true,
+                                            &backup_handle,
+                                            &res->backup);
+                if (unlikely(ret != 0)) {
+                        vmw_resource_unreference(&res);
+                        goto out_unlock;
+                }
+        }
+
         tmp = vmw_resource_reference(&srf->res);
         ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
                                     req->shareable, VMW_RES_SURFACE,
@@ -908,8 +926,8 @@ int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
             rep->size_addr;
 
         if (user_sizes)
-                ret = copy_to_user(user_sizes, srf->sizes,
-                                   srf->num_sizes * sizeof(*srf->sizes));
+                ret = copy_to_user(user_sizes, &srf->base_size,
+                                   sizeof(srf->base_size));
         if (unlikely(ret != 0)) {
                 DRM_ERROR("copy_to_user failed %p %u\n",
                           user_sizes, srf->num_sizes);
@@ -1111,7 +1129,7 @@ static int vmw_gb_surface_destroy(struct vmw_resource *res)
                 return 0;
 
         mutex_lock(&dev_priv->binding_mutex);
-        vmw_context_binding_res_list_kill(&res->binding_head);
+        vmw_context_binding_res_list_scrub(&res->binding_head);
 
         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
         if (unlikely(cmd == NULL)) {