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
23 # @deprecated-props: a list of properties that are flagged as deprecated
24 # by the CPU vendor. These props are a subset of the full model's
25 # definition list of properties. (since 9.1)
29 { 'struct': 'CpuModelInfo',
30 'data': { 'name': 'str',
32 '*deprecated-props': ['str'] } }
35 # @CpuModelExpansionType:
37 # An enumeration of CPU model expansion types.
39 # @static: Expand to a static CPU model, a combination of a static
40 # base model name and property delta changes. As the static base
41 # model will never change, the expanded CPU model will be the
42 # same, independent of QEMU version, machine type, machine
43 # options, and accelerator options. Therefore, the resulting
44 # model can be used by tooling without having to specify a
45 # compatibility machine - e.g. when displaying the "host" model.
46 # The @static CPU models are migration-safe.
48 # @full: Expand all properties. The produced model is not guaranteed
49 # to be migration-safe, but allows tooling to get an insight and
50 # work with model details.
52 # Note: When a non-migration-safe CPU model is expanded in static
53 # mode, some features enabled by the CPU model may be omitted,
54 # because they can't be implemented by a static CPU model
55 # definition (e.g. cache info passthrough and PMU passthrough in
56 # x86). If you need an accurate representation of the features
57 # enabled by a non-migration-safe CPU model, use @full. If you
58 # need a static representation that will keep ABI compatibility
59 # even when changing QEMU version or machine-type, use @static
60 # (but keep in mind that some features may be omitted).
64 { 'enum': 'CpuModelExpansionType',
65 'data': [ 'static', 'full' ] }
68 # @CpuModelCompareResult:
70 # An enumeration of CPU model comparison results. The result is
71 # usually calculated using e.g. CPU features or CPU generations.
73 # @incompatible: If model A is incompatible to model B, model A is not
74 # guaranteed to run where model B runs and the other way around.
76 # @identical: If model A is identical to model B, model A is
77 # guaranteed to run where model B runs and the other way around.
79 # @superset: If model A is a superset of model B, model B is
80 # guaranteed to run where model A runs. There are no guarantees
81 # about the other way.
83 # @subset: If model A is a subset of model B, model A is guaranteed to
84 # run where model B runs. There are no guarantees about the other
89 { 'enum': 'CpuModelCompareResult',
90 'data': [ 'incompatible', 'identical', 'superset', 'subset' ] }
93 # @CpuModelBaselineInfo:
95 # The result of a CPU model baseline.
97 # @model: the baselined CpuModelInfo.
101 { 'struct': 'CpuModelBaselineInfo',
102 'data': { 'model': 'CpuModelInfo' },
103 'if': 'TARGET_S390X' }
106 # @CpuModelCompareInfo:
108 # The result of a CPU model comparison.
110 # @result: The result of the compare operation.
112 # @responsible-properties: List of properties that led to the
113 # comparison result not being identical.
115 # @responsible-properties is a list of QOM property names that led to
116 # both CPUs not being detected as identical. For identical models,
117 # this list is empty. If a QOM property is read-only, that means
118 # there's no known way to make the CPU models identical. If the
119 # special property name "type" is included, the models are by
120 # definition not identical and cannot be made identical.
124 { 'struct': 'CpuModelCompareInfo',
125 'data': { 'result': 'CpuModelCompareResult',
126 'responsible-properties': ['str'] },
127 'if': 'TARGET_S390X' }
130 # @query-cpu-model-comparison:
132 # Compares two CPU models, @modela and @modelb, returning how they
133 # compare in a specific configuration. The results indicates how
134 # both models compare regarding runnability. This result can be
135 # used by tooling to make decisions if a certain CPU model will
136 # run in a certain configuration or if a compatible CPU model has
137 # to be created by baselining.
139 # Usually, a CPU model is compared against the maximum possible CPU
140 # model of a certain configuration (e.g. the "host" model for KVM).
141 # If that CPU model is identical or a subset, it will run in that
144 # The result returned by this command may be affected by:
146 # * QEMU version: CPU models may look different depending on the QEMU
147 # version. (Except for CPU models reported as "static" in
148 # query-cpu-definitions.)
149 # * machine-type: CPU model may look different depending on the
150 # machine-type. (Except for CPU models reported as "static" in
151 # query-cpu-definitions.)
152 # * machine options (including accelerator): in some architectures,
153 # CPU models may look different depending on machine and accelerator
154 # options. (Except for CPU models reported as "static" in
155 # query-cpu-definitions.)
156 # * "-cpu" arguments and global properties: arguments to the -cpu
157 # option and global properties may affect expansion of CPU models.
158 # Using query-cpu-model-expansion while using these is not advised.
160 # Some architectures may not support comparing CPU models. s390x
161 # supports comparing CPU models.
163 # @modela: description of the first CPU model to compare, referred to as
164 # "model A" in CpuModelCompareResult
166 # @modelb: description of the second CPU model to compare, referred to as
167 # "model B" in CpuModelCompareResult
169 # Returns: a CpuModelCompareInfo describing how both CPU models
173 # - if comparing CPU models is not supported
174 # - if a model cannot be used
175 # - if a model contains an unknown cpu definition name, unknown
176 # properties or properties with wrong types.
178 # Note: this command isn't specific to s390x, but is only implemented
179 # on this architecture currently.
183 { 'command': 'query-cpu-model-comparison',
184 'data': { 'modela': 'CpuModelInfo', 'modelb': 'CpuModelInfo' },
185 'returns': 'CpuModelCompareInfo',
186 'if': 'TARGET_S390X' }
189 # @query-cpu-model-baseline:
191 # Baseline two CPU models, @modela and @modelb, creating a compatible
192 # third model. The created model will always be a static,
193 # migration-safe CPU model (see "static" CPU model expansion for details).
195 # This interface can be used by tooling to create a compatible CPU
196 # model out two CPU models. The created CPU model will be identical
197 # to or a subset of both CPU models when comparing them. Therefore,
198 # the created CPU model is guaranteed to run where the given CPU
201 # The result returned by this command may be affected by:
203 # * QEMU version: CPU models may look different depending on the QEMU
204 # version. (Except for CPU models reported as "static" in
205 # query-cpu-definitions.)
206 # * machine-type: CPU model may look different depending on the
207 # machine-type. (Except for CPU models reported as "static" in
208 # query-cpu-definitions.)
209 # * machine options (including accelerator): in some architectures,
210 # CPU models may look different depending on machine and accelerator
211 # options. (Except for CPU models reported as "static" in
212 # query-cpu-definitions.)
213 # * "-cpu" arguments and global properties: arguments to the -cpu
214 # option and global properties may affect expansion of CPU models.
215 # Using query-cpu-model-expansion while using these is not advised.
217 # Some architectures may not support baselining CPU models. s390x
218 # supports baselining CPU models.
220 # @modela: description of the first CPU model to baseline
222 # @modelb: description of the second CPU model to baseline
224 # Returns: a CpuModelBaselineInfo describing the baselined CPU model
227 # - if baselining CPU models is not supported
228 # - if a model cannot be used
229 # - if a model contains an unknown cpu definition name, unknown
230 # properties or properties with wrong types.
232 # Note: this command isn't specific to s390x, but is only implemented
233 # on this architecture currently.
237 { 'command': 'query-cpu-model-baseline',
238 'data': { 'modela': 'CpuModelInfo',
239 'modelb': 'CpuModelInfo' },
240 'returns': 'CpuModelBaselineInfo',
241 'if': 'TARGET_S390X' }
244 # @CpuModelExpansionInfo:
246 # The result of a cpu model expansion.
248 # @model: the expanded CpuModelInfo.
252 { 'struct': 'CpuModelExpansionInfo',
253 'data': { 'model': 'CpuModelInfo' },
254 'if': { 'any': [ 'TARGET_S390X',
257 'TARGET_LOONGARCH64',
261 # @query-cpu-model-expansion:
263 # Expands a given CPU model, @model, (or a combination of CPU model +
264 # additional options) to different granularities, specified by
265 # @type, allowing tooling to get an understanding what a specific
266 # CPU model looks like in QEMU under a certain configuration.
268 # This interface can be used to query the "host" CPU model.
270 # The data returned by this command may be affected by:
272 # * QEMU version: CPU models may look different depending on the QEMU
273 # version. (Except for CPU models reported as "static" in
274 # query-cpu-definitions.)
275 # * machine-type: CPU model may look different depending on the
276 # machine-type. (Except for CPU models reported as "static" in
277 # query-cpu-definitions.)
278 # * machine options (including accelerator): in some architectures,
279 # CPU models may look different depending on machine and accelerator
280 # options. (Except for CPU models reported as "static" in
281 # query-cpu-definitions.)
282 # * "-cpu" arguments and global properties: arguments to the -cpu
283 # option and global properties may affect expansion of CPU models.
284 # Using query-cpu-model-expansion while using these is not advised.
286 # Some architectures may not support all expansion types. s390x
287 # supports "full" and "static". Arm only supports "full".
289 # @model: description of the CPU model to expand
291 # @type: expansion type, specifying how to expand the CPU model
293 # Returns: a CpuModelExpansionInfo describing the expanded CPU model
296 # - if expanding CPU models is not supported
297 # - if the model cannot be expanded
298 # - if the model contains an unknown CPU definition name, unknown
299 # properties or properties with a wrong type
300 # - if an expansion type is not supported
304 { 'command': 'query-cpu-model-expansion',
305 'data': { 'type': 'CpuModelExpansionType',
306 'model': 'CpuModelInfo' },
307 'returns': 'CpuModelExpansionInfo',
308 'if': { 'any': [ 'TARGET_S390X',
311 'TARGET_LOONGARCH64',
315 # @CpuDefinitionInfo:
317 # Virtual CPU definition.
319 # @name: the name of the CPU definition
321 # @migration-safe: whether a CPU definition can be safely used for
322 # migration in combination with a QEMU compatibility machine when
323 # migrating between different QEMU versions and between hosts with
324 # different sets of (hardware or software) capabilities. If not
325 # provided, information is not available and callers should not
326 # assume the CPU definition to be migration-safe. (since 2.8)
328 # @static: whether a CPU definition is static and will not change
329 # depending on QEMU version, machine type, machine options and
330 # accelerator options. A static model is always migration-safe.
333 # @unavailable-features: List of properties that prevent the CPU model
334 # from running in the current host. (since 2.8)
336 # @typename: Type name that can be used as argument to
337 # @device-list-properties, to introspect properties configurable
338 # using -cpu or -global. (since 2.9)
340 # @alias-of: Name of CPU model this model is an alias for. The target
341 # of the CPU model alias may change depending on the machine type.
342 # Management software is supposed to translate CPU model aliases
343 # in the VM configuration, because aliases may stop being
344 # migration-safe in the future (since 4.1)
346 # @deprecated: If true, this CPU model is deprecated and may be
347 # removed in in some future version of QEMU according to the QEMU
348 # deprecation policy. (since 5.2)
350 # @unavailable-features is a list of QOM property names that represent
351 # CPU model attributes that prevent the CPU from running. If the QOM
352 # property is read-only, that means there's no known way to make the
353 # CPU model run in the current host. Implementations that choose not
354 # to provide specific information return the property name "type". If
355 # the property is read-write, it means that it MAY be possible to run
356 # the CPU model in the current host if that property is changed.
357 # Management software can use it as hints to suggest or choose an
358 # alternative for the user, or just to generate meaningful error
359 # messages explaining why the CPU model can't be used. If
360 # @unavailable-features is an empty list, the CPU model is runnable
361 # using the current host and machine-type. If @unavailable-features
362 # is not present, runnability information for the CPU is not
367 { 'struct': 'CpuDefinitionInfo',
368 'data': { 'name': 'str',
369 '*migration-safe': 'bool',
371 '*unavailable-features': [ 'str' ],
374 'deprecated' : 'bool' },
375 'if': { 'any': [ 'TARGET_PPC',
380 'TARGET_LOONGARCH64',
384 # @query-cpu-definitions:
386 # Return a list of supported virtual CPU definitions
388 # Returns: a list of CpuDefinitionInfo
392 { 'command': 'query-cpu-definitions', 'returns': ['CpuDefinitionInfo'],
393 'if': { 'any': [ 'TARGET_PPC',
398 'TARGET_LOONGARCH64',
402 # @CpuS390Polarization:
404 # An enumeration of CPU polarization that can be assumed by a virtual
409 { 'enum': 'CpuS390Polarization',
410 'prefix': 'S390_CPU_POLARIZATION',
411 'data': [ 'horizontal', 'vertical' ],
418 # Modify the topology by moving the CPU inside the topology tree, or
419 # by changing a modifier attribute of a CPU. Absent values will not
422 # @core-id: the vCPU ID to be moved
424 # @socket-id: destination socket to move the vCPU to
426 # @book-id: destination book to move the vCPU to
428 # @drawer-id: destination drawer to move the vCPU to
430 # @entitlement: entitlement to set
432 # @dedicated: whether the provisioning of real to virtual CPU is
437 # @unstable: This command is experimental.
441 { 'command': 'set-cpu-topology',
444 '*socket-id': 'uint16',
445 '*book-id': 'uint16',
446 '*drawer-id': 'uint16',
447 '*entitlement': 'CpuS390Entitlement',
450 'features': [ 'unstable' ],
451 'if': { 'all': [ 'TARGET_S390X' , 'CONFIG_KVM' ] }
455 # @CPU_POLARIZATION_CHANGE:
457 # Emitted when the guest asks to change the polarization.
459 # The guest can tell the host (via the PTF instruction) whether the
460 # CPUs should be provisioned using horizontal or vertical
463 # On horizontal polarization the host is expected to provision all
466 # On vertical polarization the host can provision each vCPU
467 # differently. The guest will get information on the details of the
468 # provisioning the next time it uses the STSI(15) instruction.
470 # @polarization: polarization specified by the guest
474 # @unstable: This event is experimental.
480 # <- { "event": "CPU_POLARIZATION_CHANGE",
481 # "data": { "polarization": "horizontal" },
482 # "timestamp": { "seconds": 1401385907, "microseconds": 422329 } }
484 { 'event': 'CPU_POLARIZATION_CHANGE',
485 'data': { 'polarization': 'CpuS390Polarization' },
486 'features': [ 'unstable' ],
487 'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }
491 # @CpuPolarizationInfo:
493 # The result of a CPU polarization query.
495 # @polarization: the CPU polarization
499 { 'struct': 'CpuPolarizationInfo',
500 'data': { 'polarization': 'CpuS390Polarization' },
501 'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }
505 # @query-s390x-cpu-polarization:
509 # @unstable: This command is experimental.
511 # Returns: the machine's CPU polarization
515 { 'command': 'query-s390x-cpu-polarization', 'returns': 'CpuPolarizationInfo',
516 'features': [ 'unstable' ],
517 'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }