--- libev/ev_iouring.c	2019/12/28 07:37:07	1.16
+++ libev/ev_iouring.c	2019/12/28 07:39:18	1.17
@@ -361,7 +361,7 @@
         return -1; /* we failed */
 
 #if TODO
-      if ((~params.features) & (IORING_FEAT_NODROP | IORING_FEATURE_SINGLE_MMAP))
+      if ((~params.features) & (IORING_FEAT_NODROP | IORING_FEATURE_SINGLE_MMAP | IORING_FEAT_SUBMIT_STABLE))
         return -1; /* we require the above features */
 #endif