@@ -18,11 +18,8 @@
 /* we define all our platform functions here, whether or not
  * they're for the correct platform - only the ones that are
  * called by the preprocessed form of the code will actually
  * be linked, linker errors are our friend here! */
-extern void* kmem_platform_mmap(void* addr,
-		unsigned long sz, unsigned long prot, unsigned long flags,
-		unsigned long fd, unsigned long off);
 
 kmcond kmheapa(void** where, sz len) {
 	/* allocate an object on the heap and return
 	 * a pointer, or NULL if the allocation failed. */
@@ -60,8 +57,12 @@
 			posix_prot_read | posix_prot_write,
 			posix_flag_anonymous | posix_map_shared,
 			-1, 0
 		};
+
+		/* impl note: while per manpage fd is "ignored"
+		 * for MAP_ANONYMOUS, "some implementations" require
+		 * a value of -1 */
 
 		struct k_platform_syscall_answer r = k_platform_syscall
 			(k_platform_syscall_mmap, Kmsz(args), args);
 
@@ -73,17 +74,8 @@
 				case k_platform_error_ENOMEM: return kmcond_no_room;
 				default: return kmcond_fail_assert;
 			}
 		}
-
-		/* region.byte = kmem_platform_mmap(null, region_size, */
-		/* 		posix_prot_read | posix_prot_write, */
-		/* 		posix_flag_anonymous | posix_map_shared, -1, 0); */
-
-		/* impl note: while per manpage fd is "ignored"
-		 * for MAP_ANONYMOUS, "some implementations" require
-		 * a value of -1 */
-
 #	else
  	   Knoimpl(kmheapa,KVos);
 #		error missing implementation
 #	endif