# -*- Mode: Python -*- # vim: filetype=python # # This work is licensed under the terms of the GNU GPL, version 2 or later. # See the COPYING file in the top-level directory. ## # @CpuModelInfo: # # Virtual CPU model. # # A CPU model consists of the name of a CPU definition, to which # delta changes are applied (e.g. features added/removed). Most magic values # that an architecture might require should be hidden behind the name. # However, if required, architectures can expose relevant properties. # # @name: the name of the CPU definition the model is based on # @props: a dictionary of QOM properties to be applied # # Since: 2.8 ## { 'struct': 'CpuModelInfo', 'data': { 'name': 'str', '*props': 'any' } } ## # @CpuModelExpansionType: # # An enumeration of CPU model expansion types. # # @static: Expand to a static CPU model, a combination of a static base # model name and property delta changes. As the static base model will # never change, the expanded CPU model will be the same, independent of # QEMU version, machine type, machine options, and accelerator options. # Therefore, the resulting model can be used by tooling without having # to specify a compatibility machine - e.g. when displaying the "host" # model. The @static CPU models are migration-safe. # @full: Expand all properties. The produced model is not guaranteed to be # migration-safe, but allows tooling to get an insight and work with # model details. # # Note: When a non-migration-safe CPU model is expanded in static mode, some # features enabled by the CPU model may be omitted, because they can't be # implemented by a static CPU model definition (e.g. cache info passthrough and # PMU passthrough in x86). If you need an accurate representation of the # features enabled by a non-migration-safe CPU model, use @full. If you need a # static representation that will keep ABI compatibility even when changing QEMU # version or machine-type, use @static (but keep in mind that some features may # be omitted). # # Since: 2.8 ## { 'enum': 'CpuModelExpansionType', 'data': [ 'static', 'full' ] } ## # @CpuModelCompareResult: # # An enumeration of CPU model comparison results. The result is usually # calculated using e.g. CPU features or CPU generations. # # @incompatible: If model A is incompatible to model B, model A is not # guaranteed to run where model B runs and the other way around. # # @identical: If model A is identical to model B, model A is guaranteed to run # where model B runs and the other way around. # # @superset: If model A is a superset of model B, model B is guaranteed to run # where model A runs. There are no guarantees about the other way. # # @subset: If model A is a subset of model B, model A is guaranteed to run # where model B runs. There are no guarantees about the other way. # # Since: 2.8 ## { 'enum': 'CpuModelCompareResult', 'data': [ 'incompatible', 'identical', 'superset', 'subset' ] } ## # @CpuModelBaselineInfo: # # The result of a CPU model baseline. # # @model: the baselined CpuModelInfo. # # Since: 2.8 ## { 'struct': 'CpuModelBaselineInfo', 'data': { 'model': 'CpuModelInfo' }, 'if': 'TARGET_S390X' } ## # @CpuModelCompareInfo: # # The result of a CPU model comparison. # # @result: The result of the compare operation. # @responsible-properties: List of properties that led to the comparison result # not being identical. # # @responsible-properties is a list of QOM property names that led to # both CPUs not being detected as identical. For identical models, this # list is empty. # If a QOM property is read-only, that means there's no known way to make the # CPU models identical. If the special property name "type" is included, the # models are by definition not identical and cannot be made identical. # # Since: 2.8 ## { 'struct': 'CpuModelCompareInfo', 'data': { 'result': 'CpuModelCompareResult', 'responsible-properties': ['str'] }, 'if': 'TARGET_S390X' } ## # @query-cpu-model-comparison: # # Compares two CPU models, returning how they compare in a specific # configuration. The results indicates how both models compare regarding # runnability. This result can be used by tooling to make decisions if a # certain CPU model will run in a certain configuration or if a compatible # CPU model has to be created by baselining. # # Usually, a CPU model is compared against the maximum possible CPU model # of a certain configuration (e.g. the "host" model for KVM). If that CPU # model is identical or a subset, it will run in that configuration. # # The result returned by this command may be affected by: # # * QEMU version: CPU models may look different depending on the QEMU version. # (Except for CPU models reported as "static" in query-cpu-definitions.) # * machine-type: CPU model may look different depending on the machine-type. # (Except for CPU models reported as "static" in query-cpu-definitions.) # * machine options (including accelerator): in some architectures, CPU models # may look different depending on machine and accelerator options. (Except for # CPU models reported as "static" in query-cpu-definitions.) # * "-cpu" arguments and global properties: arguments to the -cpu option and # global properties may affect expansion of CPU models. Using # query-cpu-model-expansion while using these is not advised. # # Some architectures may not support comparing CPU models. s390x supports # comparing CPU models. # # Returns: a CpuModelBaselineInfo. Returns an error if comparing CPU models is # not supported, if a model cannot be used, if a model contains # an unknown cpu definition name, unknown properties or properties # with wrong types. # # Note: this command isn't specific to s390x, but is only implemented # on this architecture currently. # # Since: 2.8 ## { 'command': 'query-cpu-model-comparison', 'data': { 'modela': 'CpuModelInfo', 'modelb': 'CpuModelInfo' }, 'returns': 'CpuModelCompareInfo', 'if': 'TARGET_S390X' } ## # @query-cpu-model-baseline: # # Baseline two CPU models, creating a compatible third model. The created # model will always be a static, migration-safe CPU model (see "static" # CPU model expansion for details). # # This interface can be used by tooling to create a compatible CPU model out # two CPU models. The created CPU model will be identical to or a subset of # both CPU models when comparing them. Therefore, the created CPU model is # guaranteed to run where the given CPU models run. # # The result returned by this command may be affected by: # # * QEMU version: CPU models may look different depending on the QEMU version. # (Except for CPU models reported as "static" in query-cpu-definitions.) # * machine-type: CPU model may look different depending on the machine-type. # (Except for CPU models reported as "static" in query-cpu-definitions.) # * machine options (including accelerator): in some architectures, CPU models # may look different depending on machine and accelerator options. (Except for # CPU models reported as "static" in query-cpu-definitions.) # * "-cpu" arguments and global properties: arguments to the -cpu option and # global properties may affect expansion of CPU models. Using # query-cpu-model-expansion while using these is not advised. # # Some architectures may not support baselining CPU models. s390x supports # baselining CPU models. # # Returns: a CpuModelBaselineInfo. Returns an error if baselining CPU models is # not supported, if a model cannot be used, if a model contains # an unknown cpu definition name, unknown properties or properties # with wrong types. # # Note: this command isn't specific to s390x, but is only implemented # on this architecture currently. # # Since: 2.8 ## { 'command': 'query-cpu-model-baseline', 'data': { 'modela': 'CpuModelInfo', 'modelb': 'CpuModelInfo' }, 'returns': 'CpuModelBaselineInfo', 'if': 'TARGET_S390X' } ## # @CpuModelExpansionInfo: # # The result of a cpu model expansion. # # @model: the expanded CpuModelInfo. # # Since: 2.8 ## { 'struct': 'CpuModelExpansionInfo', 'data': { 'model': 'CpuModelInfo' }, 'if': { 'any': [ 'TARGET_S390X', 'TARGET_I386', 'TARGET_ARM' ] } } ## # @query-cpu-model-expansion: # # Expands a given CPU model (or a combination of CPU model + additional options) # to different granularities, allowing tooling to get an understanding what a # specific CPU model looks like in QEMU under a certain configuration. # # This interface can be used to query the "host" CPU model. # # The data returned by this command may be affected by: # # * QEMU version: CPU models may look different depending on the QEMU version. # (Except for CPU models reported as "static" in query-cpu-definitions.) # * machine-type: CPU model may look different depending on the machine-type. # (Except for CPU models reported as "static" in query-cpu-definitions.) # * machine options (including accelerator): in some architectures, CPU models # may look different depending on machine and accelerator options. (Except for # CPU models reported as "static" in query-cpu-definitions.) # * "-cpu" arguments and global properties: arguments to the -cpu option and # global properties may affect expansion of CPU models. Using # query-cpu-model-expansion while using these is not advised. # # Some architectures may not support all expansion types. s390x supports # "full" and "static". Arm only supports "full". # # Returns: a CpuModelExpansionInfo. Returns an error if expanding CPU models is # not supported, if the model cannot be expanded, if the model contains # an unknown CPU definition name, unknown properties or properties # with a wrong type. Also returns an error if an expansion type is # not supported. # # Since: 2.8 ## { 'command': 'query-cpu-model-expansion', 'data': { 'type': 'CpuModelExpansionType', 'model': 'CpuModelInfo' }, 'returns': 'CpuModelExpansionInfo', 'if': { 'any': [ 'TARGET_S390X', 'TARGET_I386', 'TARGET_ARM' ] } } ## # @CpuDefinitionInfo: # # Virtual CPU definition. # # @name: the name of the CPU definition # # @migration-safe: whether a CPU definition can be safely used for # migration in combination with a QEMU compatibility machine # when migrating between different QEMU versions and between # hosts with different sets of (hardware or software) # capabilities. If not provided, information is not available # and callers should not assume the CPU definition to be # migration-safe. (since 2.8) # # @static: whether a CPU definition is static and will not change depending on # QEMU version, machine type, machine options and accelerator options. # A static model is always migration-safe. (since 2.8) # # @unavailable-features: List of properties that prevent # the CPU model from running in the current # host. (since 2.8) # @typename: Type name that can be used as argument to @device-list-properties, # to introspect properties configurable using -cpu or -global. # (since 2.9) # # @alias-of: Name of CPU model this model is an alias for. The target of the # CPU model alias may change depending on the machine type. # Management software is supposed to translate CPU model aliases # in the VM configuration, because aliases may stop being # migration-safe in the future (since 4.1) # # @deprecated: If true, this CPU model is deprecated and may be removed in # in some future version of QEMU according to the QEMU deprecation # policy. (since 5.2) # # @unavailable-features is a list of QOM property names that # represent CPU model attributes that prevent the CPU from running. # If the QOM property is read-only, that means there's no known # way to make the CPU model run in the current host. Implementations # that choose not to provide specific information return the # property name "type". # If the property is read-write, it means that it MAY be possible # to run the CPU model in the current host if that property is # changed. Management software can use it as hints to suggest or # choose an alternative for the user, or just to generate meaningful # error messages explaining why the CPU model can't be used. # If @unavailable-features is an empty list, the CPU model is # runnable using the current host and machine-type. # If @unavailable-features is not present, runnability # information for the CPU is not available. # # Since: 1.2 ## { 'struct': 'CpuDefinitionInfo', 'data': { 'name': 'str', '*migration-safe': 'bool', 'static': 'bool', '*unavailable-features': [ 'str' ], 'typename': 'str', '*alias-of' : 'str', 'deprecated' : 'bool' }, 'if': { 'any': [ 'TARGET_PPC', 'TARGET_ARM', 'TARGET_I386', 'TARGET_S390X', 'TARGET_MIPS', 'TARGET_LOONGARCH64' ] } } ## # @query-cpu-definitions: # # Return a list of supported virtual CPU definitions # # Returns: a list of CpuDefinitionInfo # # Since: 1.2 ## { 'command': 'query-cpu-definitions', 'returns': ['CpuDefinitionInfo'], 'if': { 'any': [ 'TARGET_PPC', 'TARGET_ARM', 'TARGET_I386', 'TARGET_S390X', 'TARGET_MIPS', 'TARGET_LOONGARCH64' ] } }