On Mon, Feb 13, 2017 at 07:12:39PM +0100, Paolo Bonzini wrote:
> diff --git a/tests/test-aio-multithread.c b/tests/test-aio-multithread.c
> index 534807d..ada8c48 100644
> --- a/tests/test-aio-multithread.c
> +++ b/tests/test-aio-multithread.c
> @@ -196,6 +196,88 @@ static void test_multi_co_schedule_10(void)
>      test_multi_co_schedule(10);
>  }
>  
> +/* CoMutex thread-safety.  */
> +
> +static uint32_t atomic_counter;
> +static uint32_t running;
> +static uint32_t counter;
> +static CoMutex comutex;
> +
> +static void test_multi_co_mutex_entry(void *opaque)

Minor nit: missing coroutine_fn.