diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index a4beb719d217..8b877167933d 100644
--- a/tools/virtio/linux/kernel.h
+++ b/tools/virtio/linux/kernel.h
@@ -30,7 +30,6 @@
 #define READ                    0
 #define WRITE                   1
 
-typedef unsigned long long phys_addr_t;
 typedef unsigned long long dma_addr_t;
 typedef size_t __kernel_size_t;
 typedef unsigned int __wsum;
@@ -137,6 +136,7 @@ static inline void *krealloc_array(void *p, size_t new_n, size_t new_size, gfp_t
 #endif
 #define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
 #define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
+#define dev_warn_once(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
 
 #define min(x, y) ({				\
 	typeof(x) _min1 = (x);			\
diff --git a/tools/virtio/linux/vringh.h b/tools/virtio/linux/vringh.h
index 9348957be56e..e11c6aece734 100644
--- a/tools/virtio/linux/vringh.h
+++ b/tools/virtio/linux/vringh.h
@@ -1 +1,2 @@
+#include <limits.h>
 #include "../../../include/linux/vringh.h"