+ if (a->requested_va)
+ mmap_flags |= MAP_FIXED;
+
+ addr = (void *) mmap (uword_to_pointer (a->requested_va, void *), a->size,
+ PROT_READ | PROT_WRITE, mmap_flags, a->fd, 0);
+
+ if (addr == MAP_FAILED)
+ return clib_error_return_unix (0, "mmap");
+
+ a->addr = addr;
+ return 0;
+}