4 # This work is licensed under the terms of the GNU GPL, version 2 or later.
5 # See the COPYING file in the top-level directory.
7 { 'include': 'machine-common.json' }
14 # A CPU model consists of the name of a CPU definition, to which delta
15 # changes are applied (e.g. features added/removed). Most magic values
16 # that an architecture might require should be hidden behind the name.
17 # However, if required, architectures can expose relevant properties.
19 # @name: the name of the CPU definition the model is based on
21 # @props: a dictionary of QOM properties to be applied
25 { 'struct': 'CpuModelInfo',
26 'data': { 'name': 'str',
30 # @CpuModelExpansionType:
32 # An enumeration of CPU model expansion types.
34 # @static: Expand to a static CPU model, a combination of a static
35 # base model name and property delta changes. As the static base
36 # model will never change, the expanded CPU model will be the
37 # same, independent of QEMU version, machine type, machine
38 # options, and accelerator options. Therefore, the resulting
39 # model can be used by tooling without having to specify a
40 # compatibility machine - e.g. when displaying the "host" model.
41 # The @static CPU models are migration-safe.
43 # @full: Expand all properties. The produced model is not guaranteed
44 # to be migration-safe, but allows tooling to get an insight and
45 # work with model details.
47 # Note: When a non-migration-safe CPU model is expanded in static
48 # mode, some features enabled by the CPU model may be omitted,
49 # because they can't be implemented by a static CPU model
50 # definition (e.g. cache info passthrough and PMU passthrough in
51 # x86). If you need an accurate representation of the features
52 # enabled by a non-migration-safe CPU model, use @full. If you
53 # need a static representation that will keep ABI compatibility
54 # even when changing QEMU version or machine-type, use @static
55 # (but keep in mind that some features may be omitted).
59 { 'enum': 'CpuModelExpansionType',
60 'data': [ 'static', 'full' ] }
63 # @CpuModelCompareResult:
65 # An enumeration of CPU model comparison results. The result is
66 # usually calculated using e.g. CPU features or CPU generations.
68 # @incompatible: If model A is incompatible to model B, model A is not
69 # guaranteed to run where model B runs and the other way around.
71 # @identical: If model A is identical to model B, model A is
72 # guaranteed to run where model B runs and the other way around.
74 # @superset: If model A is a superset of model B, model B is
75 # guaranteed to run where model A runs. There are no guarantees
76 # about the other way.
78 # @subset: If model A is a subset of model B, model A is guaranteed to
79 # run where model B runs. There are no guarantees about the other
84 { 'enum': 'CpuModelCompareResult',
85 'data': [ 'incompatible', 'identical', 'superset', 'subset' ] }
88 # @CpuModelBaselineInfo:
90 # The result of a CPU model baseline.
92 # @model: the baselined CpuModelInfo.
96 { 'struct': 'CpuModelBaselineInfo',
97 'data': { 'model': 'CpuModelInfo' },
98 'if': 'TARGET_S390X' }
101 # @CpuModelCompareInfo:
103 # The result of a CPU model comparison.
105 # @result: The result of the compare operation.
107 # @responsible-properties: List of properties that led to the
108 # comparison result not being identical.
110 # @responsible-properties is a list of QOM property names that led to
111 # both CPUs not being detected as identical. For identical models,
112 # this list is empty. If a QOM property is read-only, that means
113 # there's no known way to make the CPU models identical. If the
114 # special property name "type" is included, the models are by
115 # definition not identical and cannot be made identical.
119 { 'struct': 'CpuModelCompareInfo',
120 'data': { 'result': 'CpuModelCompareResult',
121 'responsible-properties': ['str'] },
122 'if': 'TARGET_S390X' }
125 # @query-cpu-model-comparison:
127 # Compares two CPU models, returning how they compare in a specific
128 # configuration. The results indicates how both models compare
129 # regarding runnability. This result can be used by tooling to make
130 # decisions if a certain CPU model will run in a certain configuration
131 # or if a compatible CPU model has to be created by baselining.
133 # Usually, a CPU model is compared against the maximum possible CPU
134 # model of a certain configuration (e.g. the "host" model for KVM).
135 # If that CPU model is identical or a subset, it will run in that
138 # The result returned by this command may be affected by:
140 # * QEMU version: CPU models may look different depending on the QEMU
141 # version. (Except for CPU models reported as "static" in
142 # query-cpu-definitions.)
143 # * machine-type: CPU model may look different depending on the
144 # machine-type. (Except for CPU models reported as "static" in
145 # query-cpu-definitions.)
146 # * machine options (including accelerator): in some architectures,
147 # CPU models may look different depending on machine and accelerator
148 # options. (Except for CPU models reported as "static" in
149 # query-cpu-definitions.)
150 # * "-cpu" arguments and global properties: arguments to the -cpu
151 # option and global properties may affect expansion of CPU models.
152 # Using query-cpu-model-expansion while using these is not advised.
154 # Some architectures may not support comparing CPU models. s390x
155 # supports comparing CPU models.
157 # Returns: a CpuModelBaselineInfo
160 # - if comparing CPU models is not supported
161 # - if a model cannot be used
162 # - if a model contains an unknown cpu definition name, unknown
163 # properties or properties with wrong types.
165 # Note: this command isn't specific to s390x, but is only implemented
166 # on this architecture currently.
170 { 'command': 'query-cpu-model-comparison',
171 'data': { 'modela': 'CpuModelInfo', 'modelb': 'CpuModelInfo' },
172 'returns': 'CpuModelCompareInfo',
173 'if': 'TARGET_S390X' }
176 # @query-cpu-model-baseline:
178 # Baseline two CPU models, creating a compatible third model. The
179 # created model will always be a static, migration-safe CPU model (see
180 # "static" CPU model expansion for details).
182 # This interface can be used by tooling to create a compatible CPU
183 # model out two CPU models. The created CPU model will be identical
184 # to or a subset of both CPU models when comparing them. Therefore,
185 # the created CPU model is guaranteed to run where the given CPU
188 # The result returned by this command may be affected by:
190 # * QEMU version: CPU models may look different depending on the QEMU
191 # version. (Except for CPU models reported as "static" in
192 # query-cpu-definitions.)
193 # * machine-type: CPU model may look different depending on the
194 # machine-type. (Except for CPU models reported as "static" in
195 # query-cpu-definitions.)
196 # * machine options (including accelerator): in some architectures,
197 # CPU models may look different depending on machine and accelerator
198 # options. (Except for CPU models reported as "static" in
199 # query-cpu-definitions.)
200 # * "-cpu" arguments and global properties: arguments to the -cpu
201 # option and global properties may affect expansion of CPU models.
202 # Using query-cpu-model-expansion while using these is not advised.
204 # Some architectures may not support baselining CPU models. s390x
205 # supports baselining CPU models.
207 # Returns: a CpuModelBaselineInfo
210 # - if baselining CPU models is not supported
211 # - if a model cannot be used
212 # - if a model contains an unknown cpu definition name, unknown
213 # properties or properties with wrong types.
215 # Note: this command isn't specific to s390x, but is only implemented
216 # on this architecture currently.
220 { 'command': 'query-cpu-model-baseline',
221 'data': { 'modela': 'CpuModelInfo',
222 'modelb': 'CpuModelInfo' },
223 'returns': 'CpuModelBaselineInfo',
224 'if': 'TARGET_S390X' }
227 # @CpuModelExpansionInfo:
229 # The result of a cpu model expansion.
231 # @model: the expanded CpuModelInfo.
235 { 'struct': 'CpuModelExpansionInfo',
236 'data': { 'model': 'CpuModelInfo' },
237 'if': { 'any': [ 'TARGET_S390X',
240 'TARGET_LOONGARCH64',
244 # @query-cpu-model-expansion:
246 # Expands a given CPU model (or a combination of CPU model +
247 # additional options) to different granularities, allowing tooling to
248 # get an understanding what a specific CPU model looks like in QEMU
249 # under a certain configuration.
251 # This interface can be used to query the "host" CPU model.
253 # The data returned by this command may be affected by:
255 # * QEMU version: CPU models may look different depending on the QEMU
256 # version. (Except for CPU models reported as "static" in
257 # query-cpu-definitions.)
258 # * machine-type: CPU model may look different depending on the
259 # machine-type. (Except for CPU models reported as "static" in
260 # query-cpu-definitions.)
261 # * machine options (including accelerator): in some architectures,
262 # CPU models may look different depending on machine and accelerator
263 # options. (Except for CPU models reported as "static" in
264 # query-cpu-definitions.)
265 # * "-cpu" arguments and global properties: arguments to the -cpu
266 # option and global properties may affect expansion of CPU models.
267 # Using query-cpu-model-expansion while using these is not advised.
269 # Some architectures may not support all expansion types. s390x
270 # supports "full" and "static". Arm only supports "full".
272 # Returns: a CpuModelExpansionInfo
275 # - if expanding CPU models is not supported
276 # - if the model cannot be expanded
277 # - if the model contains an unknown CPU definition name, unknown
278 # properties or properties with a wrong type
279 # - if an expansion type is not supported
283 { 'command': 'query-cpu-model-expansion',
284 'data': { 'type': 'CpuModelExpansionType',
285 'model': 'CpuModelInfo' },
286 'returns': 'CpuModelExpansionInfo',
287 'if': { 'any': [ 'TARGET_S390X',
290 'TARGET_LOONGARCH64',
294 # @CpuDefinitionInfo:
296 # Virtual CPU definition.
298 # @name: the name of the CPU definition
300 # @migration-safe: whether a CPU definition can be safely used for
301 # migration in combination with a QEMU compatibility machine when
302 # migrating between different QEMU versions and between hosts with
303 # different sets of (hardware or software) capabilities. If not
304 # provided, information is not available and callers should not
305 # assume the CPU definition to be migration-safe. (since 2.8)
307 # @static: whether a CPU definition is static and will not change
308 # depending on QEMU version, machine type, machine options and
309 # accelerator options. A static model is always migration-safe.
312 # @unavailable-features: List of properties that prevent the CPU model
313 # from running in the current host. (since 2.8)
315 # @typename: Type name that can be used as argument to
316 # @device-list-properties, to introspect properties configurable
317 # using -cpu or -global. (since 2.9)
319 # @alias-of: Name of CPU model this model is an alias for. The target
320 # of the CPU model alias may change depending on the machine type.
321 # Management software is supposed to translate CPU model aliases
322 # in the VM configuration, because aliases may stop being
323 # migration-safe in the future (since 4.1)
325 # @deprecated: If true, this CPU model is deprecated and may be
326 # removed in in some future version of QEMU according to the QEMU
327 # deprecation policy. (since 5.2)
329 # @unavailable-features is a list of QOM property names that represent
330 # CPU model attributes that prevent the CPU from running. If the QOM
331 # property is read-only, that means there's no known way to make the
332 # CPU model run in the current host. Implementations that choose not
333 # to provide specific information return the property name "type". If
334 # the property is read-write, it means that it MAY be possible to run
335 # the CPU model in the current host if that property is changed.
336 # Management software can use it as hints to suggest or choose an
337 # alternative for the user, or just to generate meaningful error
338 # messages explaining why the CPU model can't be used. If
339 # @unavailable-features is an empty list, the CPU model is runnable
340 # using the current host and machine-type. If @unavailable-features
341 # is not present, runnability information for the CPU is not
346 { 'struct': 'CpuDefinitionInfo',
347 'data': { 'name': 'str',
348 '*migration-safe': 'bool',
350 '*unavailable-features': [ 'str' ],
353 'deprecated' : 'bool' },
354 'if': { 'any': [ 'TARGET_PPC',
359 'TARGET_LOONGARCH64',
363 # @query-cpu-definitions:
365 # Return a list of supported virtual CPU definitions
367 # Returns: a list of CpuDefinitionInfo
371 { 'command': 'query-cpu-definitions', 'returns': ['CpuDefinitionInfo'],
372 'if': { 'any': [ 'TARGET_PPC',
377 'TARGET_LOONGARCH64',
381 # @CpuS390Polarization:
383 # An enumeration of CPU polarization that can be assumed by a virtual
388 { 'enum': 'CpuS390Polarization',
389 'prefix': 'S390_CPU_POLARIZATION',
390 'data': [ 'horizontal', 'vertical' ],
397 # Modify the topology by moving the CPU inside the topology tree,
398 # or by changing a modifier attribute of a CPU.
399 # Absent values will not be modified.
401 # @core-id: the vCPU ID to be moved
403 # @socket-id: destination socket to move the vCPU to
405 # @book-id: destination book to move the vCPU to
407 # @drawer-id: destination drawer to move the vCPU to
409 # @entitlement: entitlement to set
411 # @dedicated: whether the provisioning of real to virtual CPU is dedicated
415 # @unstable: This command is experimental.
419 { 'command': 'set-cpu-topology',
422 '*socket-id': 'uint16',
423 '*book-id': 'uint16',
424 '*drawer-id': 'uint16',
425 '*entitlement': 'CpuS390Entitlement',
428 'features': [ 'unstable' ],
429 'if': { 'all': [ 'TARGET_S390X' , 'CONFIG_KVM' ] }
433 # @CPU_POLARIZATION_CHANGE:
435 # Emitted when the guest asks to change the polarization.
437 # The guest can tell the host (via the PTF instruction) whether the
438 # CPUs should be provisioned using horizontal or vertical polarization.
440 # On horizontal polarization the host is expected to provision all vCPUs
443 # On vertical polarization the host can provision each vCPU differently.
444 # The guest will get information on the details of the provisioning
445 # the next time it uses the STSI(15) instruction.
447 # @polarization: polarization specified by the guest
451 # @unstable: This event is experimental.
457 # <- { "event": "CPU_POLARIZATION_CHANGE",
458 # "data": { "polarization": "horizontal" },
459 # "timestamp": { "seconds": 1401385907, "microseconds": 422329 } }
461 { 'event': 'CPU_POLARIZATION_CHANGE',
462 'data': { 'polarization': 'CpuS390Polarization' },
463 'features': [ 'unstable' ],
464 'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }
468 # @CpuPolarizationInfo:
470 # The result of a CPU polarization query.
472 # @polarization: the CPU polarization
476 { 'struct': 'CpuPolarizationInfo',
477 'data': { 'polarization': 'CpuS390Polarization' },
478 'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }
482 # @query-s390x-cpu-polarization:
486 # @unstable: This command is experimental.
488 # Returns: the machine's CPU polarization
492 { 'command': 'query-s390x-cpu-polarization', 'returns': 'CpuPolarizationInfo',
493 'features': [ 'unstable' ],
494 'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }