[Intel][XPU] Add NUMA node binding support for Intel XPU (#31113)

test/registered/utils/test_numa_utils.py

@@ -27,8 +27,9 @@ register_cuda_ci(est_time=6, stage="base-c", runner_config="4-gpu-b200")
 class TestIsNumaAvailable(unittest.TestCase):
     """Tests for _is_numa_available on both NUMA and non-NUMA systems."""
 
+    @patch("sglang.srt.utils.numa_utils._is_xpu", False)
     @patch("sglang.srt.utils.numa_utils._is_cuda", False)
-    def test_returns_false_when_not_cuda(self):
+    def test_returns_false_when_not_cuda_or_xpu(self):
         self.assertFalse(_is_numa_available())
 
     @patch("sglang.srt.utils.numa_utils._is_cuda", True)
@@ -65,6 +66,9 @@ class TestIsNumaAvailable(unittest.TestCase):
         mock_isdir.assert_called_with("/sys/devices/system/node/node1")
 
 
+# Pin _is_xpu=False so these cases still reach the mocked pynvml on a real XPU
+# host, where _query_numa_node_for_gpu short-circuits into the XPU sysfs branch.
+@patch("sglang.srt.utils.numa_utils._is_xpu", False)
 class TestQueryNumaNodeForGpu(unittest.TestCase):
     """Tests for _query_numa_node_for_gpu with mocked pynvml."""