diff --git a/tools/virtio/crypto/hash.h b/tools/virtio/crypto/hash.h
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/tools/virtio/linux/dma-mapping.h b/tools/virtio/linux/dma-mapping.h
index f91aeb5fe57162f1fba03d93d26903fe14200a8f..8f41cd6bd5c088d9c9d0828331a139cf2cc94316 100644
--- a/tools/virtio/linux/dma-mapping.h
+++ b/tools/virtio/linux/dma-mapping.h
@@ -29,4 +29,6 @@ enum dma_data_direction {
 #define dma_unmap_single(...) do { } while (0)
 #define dma_unmap_page(...) do { } while (0)
 
+#define dma_max_mapping_size(...) SIZE_MAX
+
 #endif