Merge pull request autotest#5657 from nanli1/add_case_for_virtio_mem_…

…hot_unplug

add case for virtio memory hot unplug

libvirt/tests/cfg/memory/memory_devices/virtio_mem_hot_unplug.cfg

@@ -0,0 +1,86 @@
+- memory.devices.virtio_mem.hot_unplug:
+    no s390-virtio
+    type = virtio_mem_hot_unplug
+    start_vm = yes
+    mem_model = "virtio-mem"
+    allocate_size = "1048576"
+    allocate_memory = "${allocate_size}KiB"
+    target_size = "1048576"
+    request_size = "1048576"
+    unplug_target_size = '1048576'
+    unplug_request_size = '1048576'
+    size_unit = 'KiB'
+    block_unit = 'KiB'
+    request_unit = 'KiB'
+    unplug_size_unit = 'KiB'
+    unplug_block_unit = 'KiB'
+    unplug_request_unit = 'KiB'
+    node = 0
+    unplug_node = 0
+    slot = 0
+    mem_value = 2097152
+    current_mem = 2097152
+    numa_mem = 1048576
+    max_mem = 4194304
+    max_mem_slots = 16
+    base = "0x100000000"
+    addr_dict = "'address':{'attrs': {'base': '${base}'}}"
+    kernel_extra_params_add = "memhp_default_state=online_movable"
+    unplug_event = "device-removed"
+    audit_cmd = "ausearch --start today -m VIRT_RESOURCE | grep 'mem'"
+    ausearch_check = 'old-mem=%d new-mem=%d'
+    expected_log = "device_del"
+    kernel_hp_file = '/sys/devices/system/node/node0/hugepages/hugepages-%skB/nr_hugepages'
+    max_dict = '"max_mem_rt": ${max_mem}, "max_mem_rt_slots": ${max_mem_slots}, "max_mem_rt_unit": "KiB"'
+    numa_dict = "'vcpu': 4,'cpu':{'numa_cell': [{'id': '0', 'cpus': '0-1', 'memory': '${numa_mem}'}, {'id': '1', 'cpus': '2-3', 'memory': '${numa_mem}'}]}"
+    vm_attrs = {${numa_dict},${max_dict},'memory_unit':'KiB','memory':${mem_value},'current_mem':${current_mem},'current_mem_unit':'KiB'}
+    required_kernel = [5.14.0,)
+    guest_required_kernel = [5.8.0,)
+    func_supported_since_libvirt_ver = (10, 0, 0)
+    func_supported_since_qemu_kvm_ver = (8, 2, 0)
+    machine_version = "9.4.0"
+    variants case:
+        - target_and_address:
+            unplug_request_size = '0'
+            updated_request_option = "--requested-size 0"
+        - source_mib_and_hugepages:
+            target_size = "1024"
+            request_size = "512"
+            size_unit = 'MiB'
+            request_unit = "MiB"
+            node = 1
+            unplug_target_size = "1024"
+            unplug_request_size = "0"
+            unplug_size_unit = "MiB"
+            unplug_request_unit = "MiB"
+            unplug_node = 1
+            source_dict = {'nodemask': '0','pagesize': %d, 'pagesize_unit':'KiB'}
+            updated_request_option = "--requested-size 0"
+        - nonexistent_mem:
+            node = 1
+            unplug_node = 1
+            target_size = "524288"
+            request_size = "524288"
+            unplug_target_size = "1048576"
+            unplug_request_size = "524288"
+        - none_zero_current:
+        - none_zero_request:
+            source_dict = {'nodemask': '0','pagesize': %d, 'pagesize_unit':'KiB'}
+    virtio_dict = {'mem_model':'${mem_model}','alias': {'name': '%s'},'target': {${addr_dict},'size':${target_size}, 'size_unit':'${size_unit}', 'node':${node},'requested_size': ${request_size},'requested_unit':'${request_unit}', 'block_size': %s, 'block_unit':'${block_unit}'}}
+    unplug_dict = {'mem_model':'${mem_model}','alias': {'name': '%s'},'target': {${addr_dict},'size':${unplug_target_size},'requested_size': ${unplug_request_size}, 'block_size': %s, 'size_unit':'${unplug_size_unit}','requested_unit':'${unplug_request_unit}','block_unit':'${unplug_block_unit}','node':${unplug_node}}}
+    variants plug_way:
+        - detach:
+            detach_method = "detach"
+            nonexistent_mem:
+                unplug_error = "model 'virtio-mem' memory device not present in the domain configuration"
+            none_zero_current:
+                unplug_error = "virtio-mem device cannot get unplugged while 'size' != '0'"
+            none_zero_request:
+                unplug_error = "virtio-mem device cannot get unplugged while 'requested-size' != '0'"
+        - detach_alias:
+            no nonexistent_mem
+            detach_method = "detach_alias"
+            none_zero_current:
+                unplug_error = "virtio-mem device cannot get unplugged while 'size' != '0'"
+            none_zero_request:
+                unplug_error = "virtio-mem device cannot get unplugged while 'requested-size' != '0'"