27 lines
782 B
Plaintext
27 lines
782 B
Plaintext
Generic vm interface
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The virtual machine "device" also accepts the ioctls KVM_SET_DEVICE_ATTR,
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KVM_GET_DEVICE_ATTR, and KVM_HAS_DEVICE_ATTR. The interface uses the same
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struct kvm_device_attr as other devices, but targets VM-wide settings
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and controls.
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The groups and attributes per virtual machine, if any, are architecture
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specific.
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1. GROUP: KVM_S390_VM_MEM_CTRL
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Architectures: s390
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1.1. ATTRIBUTE: KVM_S390_VM_MEM_CTRL
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Parameters: none
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Returns: -EBUSY if already a vcpus is defined, otherwise 0
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Enables CMMA for the virtual machine
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1.2. ATTRIBUTE: KVM_S390_VM_CLR_CMMA
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Parameteres: none
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Returns: 0
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Clear the CMMA status for all guest pages, so any pages the guest marked
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as unused are again used any may not be reclaimed by the host.
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