This kmod is built with retpoline support (using inline thunks), however, kernel
detects presence of retpolines in kmods based on presence of the respective
modinfo flag, added by modpost script. As kmod is built against GA kernel whose
modpost script lacks the appropriate code, let's add the flag manually in order
to avoid bogus complaints from newer kernels.
Index: src/drivers/net/ethernet/intel/i40evf/i40evf_main.c
===================================================================
--- src.orig/drivers/net/ethernet/intel/i40evf/i40evf_main.c	2018-03-02 08:32:54.837576113 +0100
+++ src/drivers/net/ethernet/intel/i40evf/i40evf_main.c	2018-03-15 20:50:30.363156136 +0100
@@ -78,6 +78,7 @@
 MODULE_DESCRIPTION("Intel(R) XL710 X710 Virtual Function Network Driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
+MODULE_INFO(retpoline, "Y");
 
 static struct workqueue_struct *i40evf_wq;