diff --git a/sys/compat/linuxkpi/common/include/linux/compat.h b/sys/compat/linuxkpi/common/include/linux/compat.h
index 5e4dd1daf67d..b6bb5e8ed24b 100644
--- a/sys/compat/linuxkpi/common/include/linux/compat.h
+++ b/sys/compat/linuxkpi/common/include/linux/compat.h
@@ -1,61 +1,64 @@
 /*-
  * Copyright (c) 2010 Isilon Systems, Inc.
  * Copyright (c) 2010 iX Systems, Inc.
  * Copyright (c) 2010 Panasas, Inc.
  * Copyright (c) 2013-2017 Mellanox Technologies, Ltd.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice unmodified, this list of conditions, and the following
  *    disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * $FreeBSD$
  */
 #ifndef	_LINUXKPI_LINUX_COMPAT_H_
 #define	_LINUXKPI_LINUX_COMPAT_H_
 
 #include <sys/param.h>
 #include <sys/proc.h>
 #include <sys/malloc.h>
 
 struct domainset;
 struct thread;
 struct task_struct;
 
 extern int linux_alloc_current(struct thread *, int flags);
 extern void linux_free_current(struct task_struct *);
 extern struct domainset *linux_get_vm_domain_set(int node);
 
 static inline void
 linux_set_current(struct thread *td)
 {
 	if (__predict_false(td->td_lkpi_task == NULL))
 		lkpi_alloc_current(td, M_WAITOK);
 }
 
 static inline int
 linux_set_current_flags(struct thread *td, int flags)
 {
 	if (__predict_false(td->td_lkpi_task == NULL))
 		return (lkpi_alloc_current(td, flags));
 	return (0);
 }
 
+#define	compat_ptr(x)		((void *)(uintptr_t)x)
+#define	ptr_to_compat(x)	((uintptr_t)x)
+
 #endif	/* _LINUXKPI_LINUX_COMPAT_H_ */