diff options
| author | Pekka Enberg <penberg@kernel.org> | 2011-05-09 15:48:54 -0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-05-22 08:48:11 -0400 |
| commit | 76d25402dfc972a135a656613736fe3602045a95 (patch) | |
| tree | 2574a84c4437fd618011cc60f6227140cf4403fc /Documentation/kvm/api.txt | |
| parent | 8fa2206821953a50a3a02ea33fcfb3ced2fd9997 (diff) | |
KVM: Add documentation for KVM_CAP_NR_VCPUS
Document KVM_CAP_NR_VCPUS that can be used by the userspace to determine
maximum number of VCPUs it can create with the KVM_CREATE_VCPU ioctl.
Cc: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Jan Kiszka <jan.kiszka@web.de>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'Documentation/kvm/api.txt')
| -rw-r--r-- | Documentation/kvm/api.txt | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/kvm/api.txt b/Documentation/kvm/api.txt index f64c41f8ba61..42542eb802ca 100644 --- a/Documentation/kvm/api.txt +++ b/Documentation/kvm/api.txt | |||
| @@ -175,7 +175,10 @@ Parameters: vcpu id (apic id on x86) | |||
| 175 | Returns: vcpu fd on success, -1 on error | 175 | Returns: vcpu fd on success, -1 on error |
| 176 | 176 | ||
| 177 | This API adds a vcpu to a virtual machine. The vcpu id is a small integer | 177 | This API adds a vcpu to a virtual machine. The vcpu id is a small integer |
| 178 | in the range [0, max_vcpus). | 178 | in the range [0, max_vcpus). You can use KVM_CAP_NR_VCPUS of the |
| 179 | KVM_CHECK_EXTENSION ioctl() to determine the value for max_vcpus at run-time. | ||
| 180 | If the KVM_CAP_NR_VCPUS does not exist, you should assume that max_vcpus is 4 | ||
| 181 | cpus max. | ||
| 179 | 182 | ||
| 180 | 4.8 KVM_GET_DIRTY_LOG (vm ioctl) | 183 | 4.8 KVM_GET_DIRTY_LOG (vm ioctl) |
| 181 | 184 | ||