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Diffstat (limited to 'Documentation/virt/kvm/api.txt')
| -rw-r--r-- | Documentation/virt/kvm/api.txt | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/Documentation/virt/kvm/api.txt b/Documentation/virt/kvm/api.txt index 49183add44e7..ebb37b34dcfc 100644 --- a/Documentation/virt/kvm/api.txt +++ b/Documentation/virt/kvm/api.txt @@ -5,7 +5,7 @@ The Definitive KVM (Kernel-based Virtual Machine) API Documentation ---------------------- The kvm API is a set of ioctls that are issued to control various aspects -of a virtual machine. The ioctls belong to three classes: +of a virtual machine. The ioctls belong to the following classes: - System ioctls: These query and set global attributes which affect the whole kvm subsystem. In addition a system ioctl is used to create @@ -4149,6 +4149,24 @@ Valid values for 'action': #define KVM_PMU_EVENT_ALLOW 0 #define KVM_PMU_EVENT_DENY 1 +4.121 KVM_PPC_SVM_OFF + +Capability: basic +Architectures: powerpc +Type: vm ioctl +Parameters: none +Returns: 0 on successful completion, +Errors: + EINVAL: if ultravisor failed to terminate the secure guest + ENOMEM: if hypervisor failed to allocate new radix page tables for guest + +This ioctl is used to turn off the secure mode of the guest or transition +the guest from secure mode to normal mode. This is invoked when the guest +is reset. This has no effect if called for a normal guest. + +This ioctl issues an ultravisor call to terminate the secure guest, +unpins the VPA pages and releases all the device pages that are used to +track the secure pages by hypervisor. 5. The kvm_run structure ------------------------ |