diff --git a/tests/TestSuite_vdev_primary_secondary.py b/tests/TestSuite_vdev_primary_secondary.py
index 7f054cda..f39f4ecf 100644
--- a/tests/TestSuite_vdev_primary_secondary.py
+++ b/tests/TestSuite_vdev_primary_secondary.py
@@ -66,6 +66,7 @@ class TestVdevPrimarySecondary(TestCase):
         self.pci_info = self.dut.ports_info[0]["pci"]
         self.app_testpmd_path = self.dut.apps_name["test-pmd"]
         self.app_symmetric_mp_path = self.dut.apps_name["symmetric_mp"]
+        self.app_hotplug_mp_path = self.dut.apps_name["hotplug_mp"]
         self.testpmd_name = self.app_testpmd_path.split("/")[-1]
 
     def set_up(self):
@@ -89,7 +90,7 @@ class TestVdevPrimarySecondary(TestCase):
             vm_params["opt_mac"] = "%s%d" % (self.virtio_mac, i + 2)
             vm_params["opt_queue"] = self.queues
             vm_params["opt_server"] = "server"
-            vm_params["opt_settings"] = "mrg_rxbuf=on,mq=on,vectors=%d" % (
+            vm_params["opt_settings"] = "mrg_rxbuf=on,csum=on,mq=on,vectors=%d" % (
                 2 * self.queues + 2
             )
             self.vm.set_vm_device(**vm_params)
@@ -125,11 +126,13 @@ class TestVdevPrimarySecondary(TestCase):
         )
         start_cmd = testcmd + eal_params + vdev1 + vdev2 + para
         self.dut.send_expect(start_cmd, "testpmd> ", 120)
+
+    def send_packets_from_vhost(self):
         self.dut.send_expect("set fwd txonly", "testpmd> ", 120)
         self.dut.send_expect("start", "testpmd> ", 120)
 
-    def launch_examples(self):
-        example_cmd_auto = (
+    def launch_symmetric_mp(self):
+        example_cmd_primary = (
             self.app_symmetric_mp_path
             + " -l 0 -n %d --proc-type=auto -- -p 3 --num-procs=%d --proc-id=0"
         )
@@ -137,48 +140,99 @@ class TestVdevPrimarySecondary(TestCase):
             self.app_symmetric_mp_path
             + " -l 1 -n %d --proc-type=secondary -- -p 3 --num-procs=%d --proc-id=1"
         )
-        final_cmd_first = example_cmd_auto % (self.mem_channels, self.queues)
+        final_cmd_primary = example_cmd_primary % (self.mem_channels, self.queues)
+        final_cmd_secondary = example_cmd_secondary % (self.mem_channels, self.queues)
+        self.vm_primary.send_expect(final_cmd_primary, "Lcore", 120)
+        time.sleep(3)
+        self.vm_secondary.send_expect(final_cmd_secondary, "Lcore", 120)
+
+    def launch_hotplug_mp(self):
+        example_cmd_primary = (
+            self.app_hotplug_mp_path
+            + " -l 0 -n %d --proc-type=auto -- -p 3 --num-procs=%d --proc-id=0"
+        )
+        example_cmd_secondary = (
+            self.app_hotplug_mp_path
+            + " -l 1 -n %d --proc-type=secondary -- -p 3 --num-procs=%d --proc-id=1"
+        )
+        final_cmd_primary = example_cmd_primary % (self.mem_channels, self.queues)
         final_cmd_secondary = example_cmd_secondary % (self.mem_channels, self.queues)
-        self.vhost_first.send_expect(final_cmd_first, "Lcore", 120)
+        self.vm_primary.send_expect(final_cmd_primary, "example>", 120)
         time.sleep(3)
-        self.vhost_secondary.send_expect(final_cmd_secondary, "Lcore", 120)
+        self.vm_secondary.send_expect(final_cmd_secondary, "example>", 120)
+
+    def check_etherdev(self, dev_list):
+        primary_out = self.vm_primary.send_expect("list", "example", 120)
+        for dev in dev_list:
+            self.verify(dev in primary_out, "dev {} not in the list")
+        secondary_out = self.vm_secondary.send_expect("list", "example", 120)
+        for dev in dev_list:
+            self.verify(dev in secondary_out, "dev {} not in the list")
+
+    def detach_etherdev_from_primary(self, dev_pci):
+        self.vm_primary.send_expect("detach {}".format(dev_pci), "example", 120)
+
+    def attach_etherdev_from_secondary(self, dev_pci):
+        self.vm_secondary.send_expect("attach {}".format(dev_pci), "example", 120)
 
     def prepare_symmetric_mp(self):
         out = self.vm_dut.build_dpdk_apps("./examples/multi_process/symmetric_mp")
         self.verify("Error" not in out, "compilation symmetric_mp error")
 
+    def prepare_hotplug_mp(self):
+        out = self.vm_dut.build_dpdk_apps("./examples/multi_process/hotplug_mp")
+        self.verify("Error" not in out, "compilation hotplug_mp error")
+
     def close_session(self):
-        self.vm_dut.close_session(self.vhost_first)
-        self.vm_dut.close_session(self.vhost_secondary)
+        self.vm_dut.close_session(self.vm_primary)
+        self.vm_dut.close_session(self.vm_secondary)
 
-    def test_Virtio_primary_and_secondary_process(self):
-        # start testpmd
+    def test_virtio_primary_and_secondary_process(self):
         self.launch_testpmd()
         self.setup_vm_env()
-        # Modify code
         self.prepare_symmetric_mp()
-        # create 2 new session
-        self.vhost_first = self.vm_dut.new_session(suite="vhost_first")
-        self.vhost_secondary = self.vm_dut.new_session(suite="vhsot_secondary")
-        # start symmetric_mp
-        self.launch_examples()
+        self.vm_primary = self.vm_dut.new_session(suite="vm_primary")
+        self.vm_secondary = self.vm_dut.new_session(suite="vhsot_secondary")
+        self.launch_symmetric_mp()
+        self.send_packets_from_vhost()
         time.sleep(3)
-        vhost_first_out = self.vhost_first.send_expect("^c", "#", 15)
-        print(vhost_first_out)
+        vm_primary_out = self.vm_primary.send_expect("^c", "#", 15)
+        print(vm_primary_out)
         time.sleep(3)
-        vhost_secondary_out = self.vhost_secondary.send_expect("^c", "#", 15)
-        print(vhost_secondary_out)
-        result_first = re.findall(r"Port \d: RX - (\w+)", vhost_first_out)
-        result_secondary = re.findall(r"Port \d: RX - (\w+)", vhost_secondary_out)
+        vm_secondary_out = self.vm_secondary.send_expect("^c", "#", 15)
+        print(vm_secondary_out)
+        result_primary = re.findall(r"Port \d: RX - (\w+)", vm_primary_out)
+        result_secondary = re.findall(r"Port \d: RX - (\w+)", vm_secondary_out)
         self.verify(
-            len(result_first[0]) != 0
-            and len(result_first[1]) != 0
+            len(result_primary[0]) != 0
+            and len(result_primary[1]) != 0
             and len(result_secondary[0]) != 0
             and len(result_secondary[1]) != 0,
             "RX no data",
         )
         self.dut.send_expect("quit", "#", 15)
 
+    def test_virtio_primay_and_secondary_process_hotplug(self):
+        self.launch_testpmd()
+        self.setup_vm_env()
+        self.prepare_hotplug_mp()
+        self.vm_primary = self.vm_dut.new_session(suite="vm_primary")
+        self.vm_secondary = self.vm_dut.new_session(suite="vhsot_secondary")
+        self.launch_hotplug_mp()
+        vm_ports = []
+        for pci_info in self.vm_dut.ports_info:
+            vm_ports.append(pci_info['pci'])
+        self.check_etherdev(dev_list=vm_ports)
+        detach_pci = vm_ports[0]
+        for _ in range(2):
+            self.detach_etherdev_from_primary(dev_pci=detach_pci)
+            vm_ports.remove(detach_pci)
+            self.check_etherdev(dev_list=vm_ports)
+            self.attach_etherdev_from_secondary(dev_pci=detach_pci)
+            vm_ports.append(detach_pci)
+            self.check_etherdev(dev_list=vm_ports)
+        self.dut.send_expect("quit", "#", 15)
+
     def tear_down(self):
         """
         Run after each test case.
