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Diffstat (limited to 'Documentation/virtual')
| -rw-r--r-- | Documentation/virtual/kvm/api.txt | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 4029943887a3..68b66b538d2d 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -3996,6 +3996,21 @@ Parameters: none Allow use of adapter-interruption suppression. Returns: 0 on success; -EBUSY if a VCPU has already been created. +7.11 KVM_CAP_PPC_SMT + +Architectures: ppc +Parameters: vsmt_mode, flags + +Enabling this capability on a VM provides userspace with a way to set +the desired virtual SMT mode (i.e. the number of virtual CPUs per +virtual core). The virtual SMT mode, vsmt_mode, must be a power of 2 +between 1 and 8. On POWER8, vsmt_mode must also be no greater than +the number of threads per subcore for the host. Currently flags must +be 0. A successful call to enable this capability will result in +vsmt_mode being returned when the KVM_CAP_PPC_SMT capability is +subsequently queried for the VM. This capability is only supported by +HV KVM, and can only be set before any VCPUs have been created. + 8. Other capabilities. ---------------------- |