RustPython
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
@@ -532,6 +532,10 @@ def requires_legacy_unicode_capi():
 
 has_fork_support = hasattr(os, "fork") and not is_emscripten and not is_wasi
 
+# From python 3.12.6
+is_s390x = hasattr(os, 'uname') and os.uname().machine == 's390x'
+skip_on_s390x = unittest.skipIf(is_s390x, 'skipped on s390x')
+
 def requires_fork():
     return unittest.skipUnless(has_fork_support, "requires working os.fork()")