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, @modela and @modelb, returning how they
128 # compare in a specific configuration. The results indicates how
129 # both models compare regarding runnability. This result can be
130 # used by tooling to make decisions if a certain CPU model will
131 # run in a certain configuration or if a compatible CPU model has
132 # to be created by baselining.
134 # Usually, a CPU model is compared against the maximum possible CPU
135 # model of a certain configuration (e.g. the "host" model for KVM).
136 # If that CPU model is identical or a subset, it will run in that
139 # The result returned by this command may be affected by:
141 # * QEMU version: CPU models may look different depending on the QEMU
142 # version. (Except for CPU models reported as "static" in
143 # query-cpu-definitions.)
144 # * machine-type: CPU model may look different depending on the
145 # machine-type. (Except for CPU models reported as "static" in
146 # query-cpu-definitions.)
147 # * machine options (including accelerator): in some architectures,
148 # CPU models may look different depending on machine and accelerator
149 # options. (Except for CPU models reported as "static" in
150 # query-cpu-definitions.)
151 # * "-cpu" arguments and global properties: arguments to the -cpu
152 # option and global properties may affect expansion of CPU models.
153 # Using query-cpu-model-expansion while using these is not advised.
155 # Some architectures may not support comparing CPU models. s390x
156 # supports comparing CPU models.
158 # @modela: description of the first CPU model to compare, referred to as
159 # "model A" in CpuModelCompareResult
161 # @modelb: description of the second CPU model to compare, referred to as
162 # "model B" in CpuModelCompareResult
164 # Returns: a CpuModelCompareInfo describing how both CPU models
168 # - if comparing CPU models is not supported
169 # - if a model cannot be used
170 # - if a model contains an unknown cpu definition name, unknown
171 # properties or properties with wrong types.
173 # Note: this command isn't specific to s390x, but is only implemented
174 # on this architecture currently.
178 { 'command': 'query-cpu-model-comparison',
179 'data': { 'modela': 'CpuModelInfo', 'modelb': 'CpuModelInfo' },
180 'returns': 'CpuModelCompareInfo',
181 'if': 'TARGET_S390X' }
184 # @query-cpu-model-baseline:
186 # Baseline two CPU models, @modela and @modelb, creating a compatible
187 # third model. The created model will always be a static,
188 # migration-safe CPU model (see "static" CPU model expansion for details).
190 # This interface can be used by tooling to create a compatible CPU
191 # model out two CPU models. The created CPU model will be identical
192 # to or a subset of both CPU models when comparing them. Therefore,
193 # the created CPU model is guaranteed to run where the given CPU
196 # The result returned by this command may be affected by:
198 # * QEMU version: CPU models may look different depending on the QEMU
199 # version. (Except for CPU models reported as "static" in
200 # query-cpu-definitions.)
201 # * machine-type: CPU model may look different depending on the
202 # machine-type. (Except for CPU models reported as "static" in
203 # query-cpu-definitions.)
204 # * machine options (including accelerator): in some architectures,
205 # CPU models may look different depending on machine and accelerator
206 # options. (Except for CPU models reported as "static" in
207 # query-cpu-definitions.)
208 # * "-cpu" arguments and global properties: arguments to the -cpu
209 # option and global properties may affect expansion of CPU models.
210 # Using query-cpu-model-expansion while using these is not advised.
212 # Some architectures may not support baselining CPU models. s390x
213 # supports baselining CPU models.
215 # @modela: description of the first CPU model to baseline
217 # @modelb: description of the second CPU model to baseline
219 # Returns: a CpuModelBaselineInfo describing the baselined CPU model
222 # - if baselining CPU models is not supported
223 # - if a model cannot be used
224 # - if a model contains an unknown cpu definition name, unknown
225 # properties or properties with wrong types.
227 # Note: this command isn't specific to s390x, but is only implemented
228 # on this architecture currently.
232 { 'command': 'query-cpu-model-baseline',
233 'data': { 'modela': 'CpuModelInfo',
234 'modelb': 'CpuModelInfo' },
235 'returns': 'CpuModelBaselineInfo',
236 'if': 'TARGET_S390X' }
239 # @CpuModelExpansionInfo:
241 # The result of a cpu model expansion.
243 # @model: the expanded CpuModelInfo.
247 { 'struct': 'CpuModelExpansionInfo',
248 'data': { 'model': 'CpuModelInfo' },
249 'if': { 'any': [ 'TARGET_S390X',
252 'TARGET_LOONGARCH64',
256 # @query-cpu-model-expansion:
258 # Expands a given CPU model, @model, (or a combination of CPU model +
259 # additional options) to different granularities, specified by
260 # @type, allowing tooling to get an understanding what a specific
261 # CPU model looks like in QEMU under a certain configuration.
263 # This interface can be used to query the "host" CPU model.
265 # The data returned by this command may be affected by:
267 # * QEMU version: CPU models may look different depending on the QEMU
268 # version. (Except for CPU models reported as "static" in
269 # query-cpu-definitions.)
270 # * machine-type: CPU model may look different depending on the
271 # machine-type. (Except for CPU models reported as "static" in
272 # query-cpu-definitions.)
273 # * machine options (including accelerator): in some architectures,
274 # CPU models may look different depending on machine and accelerator
275 # options. (Except for CPU models reported as "static" in
276 # query-cpu-definitions.)
277 # * "-cpu" arguments and global properties: arguments to the -cpu
278 # option and global properties may affect expansion of CPU models.
279 # Using query-cpu-model-expansion while using these is not advised.
281 # Some architectures may not support all expansion types. s390x
282 # supports "full" and "static". Arm only supports "full".
284 # @model: description of the CPU model to expand
286 # @type: expansion type, specifying how to expand the CPU model
288 # Returns: a CpuModelExpansionInfo describing the expanded CPU model
291 # - if expanding CPU models is not supported
292 # - if the model cannot be expanded
293 # - if the model contains an unknown CPU definition name, unknown
294 # properties or properties with a wrong type
295 # - if an expansion type is not supported
299 { 'command': 'query-cpu-model-expansion',
300 'data': { 'type': 'CpuModelExpansionType',
301 'model': 'CpuModelInfo' },
302 'returns': 'CpuModelExpansionInfo',
303 'if': { 'any': [ 'TARGET_S390X',
306 'TARGET_LOONGARCH64',
310 # @CpuDefinitionInfo:
312 # Virtual CPU definition.
314 # @name: the name of the CPU definition
316 # @migration-safe: whether a CPU definition can be safely used for
317 # migration in combination with a QEMU compatibility machine when
318 # migrating between different QEMU versions and between hosts with
319 # different sets of (hardware or software) capabilities. If not
320 # provided, information is not available and callers should not
321 # assume the CPU definition to be migration-safe. (since 2.8)
323 # @static: whether a CPU definition is static and will not change
324 # depending on QEMU version, machine type, machine options and
325 # accelerator options. A static model is always migration-safe.
328 # @unavailable-features: List of properties that prevent the CPU model
329 # from running in the current host. (since 2.8)
331 # @typename: Type name that can be used as argument to
332 # @device-list-properties, to introspect properties configurable
333 # using -cpu or -global. (since 2.9)
335 # @alias-of: Name of CPU model this model is an alias for. The target
336 # of the CPU model alias may change depending on the machine type.
337 # Management software is supposed to translate CPU model aliases
338 # in the VM configuration, because aliases may stop being
339 # migration-safe in the future (since 4.1)
341 # @deprecated: If true, this CPU model is deprecated and may be
342 # removed in in some future version of QEMU according to the QEMU
343 # deprecation policy. (since 5.2)
345 # @unavailable-features is a list of QOM property names that represent
346 # CPU model attributes that prevent the CPU from running. If the QOM
347 # property is read-only, that means there's no known way to make the
348 # CPU model run in the current host. Implementations that choose not
349 # to provide specific information return the property name "type". If
350 # the property is read-write, it means that it MAY be possible to run
351 # the CPU model in the current host if that property is changed.
352 # Management software can use it as hints to suggest or choose an
353 # alternative for the user, or just to generate meaningful error
354 # messages explaining why the CPU model can't be used. If
355 # @unavailable-features is an empty list, the CPU model is runnable
356 # using the current host and machine-type. If @unavailable-features
357 # is not present, runnability information for the CPU is not
362 { 'struct': 'CpuDefinitionInfo',
363 'data': { 'name': 'str',
364 '*migration-safe': 'bool',
366 '*unavailable-features': [ 'str' ],
369 'deprecated' : 'bool' },
370 'if': { 'any': [ 'TARGET_PPC',
375 'TARGET_LOONGARCH64',
379 # @query-cpu-definitions:
381 # Return a list of supported virtual CPU definitions
383 # Returns: a list of CpuDefinitionInfo
387 { 'command': 'query-cpu-definitions', 'returns': ['CpuDefinitionInfo'],
388 'if': { 'any': [ 'TARGET_PPC',
393 'TARGET_LOONGARCH64',
397 # @CpuS390Polarization:
399 # An enumeration of CPU polarization that can be assumed by a virtual
404 { 'enum': 'CpuS390Polarization',
405 'prefix': 'S390_CPU_POLARIZATION',
406 'data': [ 'horizontal', 'vertical' ],
413 # Modify the topology by moving the CPU inside the topology tree, or
414 # by changing a modifier attribute of a CPU. Absent values will not
417 # @core-id: the vCPU ID to be moved
419 # @socket-id: destination socket to move the vCPU to
421 # @book-id: destination book to move the vCPU to
423 # @drawer-id: destination drawer to move the vCPU to
425 # @entitlement: entitlement to set
427 # @dedicated: whether the provisioning of real to virtual CPU is
432 # @unstable: This command is experimental.
436 { 'command': 'set-cpu-topology',
439 '*socket-id': 'uint16',
440 '*book-id': 'uint16',
441 '*drawer-id': 'uint16',
442 '*entitlement': 'CpuS390Entitlement',
445 'features': [ 'unstable' ],
446 'if': { 'all': [ 'TARGET_S390X' , 'CONFIG_KVM' ] }
450 # @CPU_POLARIZATION_CHANGE:
452 # Emitted when the guest asks to change the polarization.
454 # The guest can tell the host (via the PTF instruction) whether the
455 # CPUs should be provisioned using horizontal or vertical
458 # On horizontal polarization the host is expected to provision all
461 # On vertical polarization the host can provision each vCPU
462 # differently. The guest will get information on the details of the
463 # provisioning the next time it uses the STSI(15) instruction.
465 # @polarization: polarization specified by the guest
469 # @unstable: This event is experimental.
475 # <- { "event": "CPU_POLARIZATION_CHANGE",
476 # "data": { "polarization": "horizontal" },
477 # "timestamp": { "seconds": 1401385907, "microseconds": 422329 } }
479 { 'event': 'CPU_POLARIZATION_CHANGE',
480 'data': { 'polarization': 'CpuS390Polarization' },
481 'features': [ 'unstable' ],
482 'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }
486 # @CpuPolarizationInfo:
488 # The result of a CPU polarization query.
490 # @polarization: the CPU polarization
494 { 'struct': 'CpuPolarizationInfo',
495 'data': { 'polarization': 'CpuS390Polarization' },
496 'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }
500 # @query-s390x-cpu-polarization:
504 # @unstable: This command is experimental.
506 # Returns: the machine's CPU polarization
510 { 'command': 'query-s390x-cpu-polarization', 'returns': 'CpuPolarizationInfo',
511 'features': [ 'unstable' ],
512 'if': { 'all': [ 'TARGET_S390X', 'CONFIG_KVM' ] }