On 09.11.2021 08:02, Vikram Garhwal wrote:
> --- a/xen/common/sysctl.c
> +++ b/xen/common/sysctl.c
> @@ -331,6 +331,205 @@ out:
>      spin_unlock(&overlay_lock);
>      return rc;
>  }
> +
> +/*
> + * Adds device tree nodes under target node.
> + * We use dt_host_new to unflatten the updated device_tree_flattened. This is
> + * done to avoid the removal of device_tree generation, iomem regions mapping to
> + * hardware domain done by handle_node().
> + */
> +static long handle_add_overlay_nodes(void *overlay_fdt,
> +                                     uint32_t overlay_fdt_size)

You adding a static function here without any caller got me puzzled.
First I thought you'd be introducing a build failure this was, but
it's really patch 8 which does by introducing a call to this function
without the function actually being there.

Jan