--- src/shared/linux_osl.c.orig	2015-11-05 12:34:16.493058697 +0000
+++ src/shared/linux_osl.c	2015-11-06 10:24:16.849543350 +0000
@@ -35,6 +31,10 @@
 
 #include <linux/fs.h>
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 3, 0))
+#define rdtscl(low) ((low) = (u32)rdtsc())
+#endif
+
 #define PCI_CFG_RETRY 		10
 
 #define OS_HANDLE_MAGIC		0x1234abcd