diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2022-02-25 17:53:02 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-04-02 12:41:19 +0300 |
| commit | ffbb61d09fc56c85e28b110494f3788d0ed4d1f8 (patch) | |
| tree | c745419e4bbe0a3bce306d9cca36d27075915f48 /Documentation/virt/kvm/api.rst | |
| parent | fe3787a0d14920fa98c38a21431001c9d4edfe93 (diff) | |
| download | linux-ffbb61d09fc56c85e28b110494f3788d0ed4d1f8.tar.xz | |
KVM: x86: Accept KVM_[GS]ET_TSC_KHZ as a VM ioctl.
This sets the default TSC frequency for subsequently created vCPUs.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20220225145304.36166-2-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation/virt/kvm/api.rst')
| -rw-r--r-- | Documentation/virt/kvm/api.rst | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst index fdfd9e1bc7f7..b102ba7cf903 100644 --- a/Documentation/virt/kvm/api.rst +++ b/Documentation/virt/kvm/api.rst @@ -1897,22 +1897,25 @@ the future. 4.55 KVM_SET_TSC_KHZ -------------------- -:Capability: KVM_CAP_TSC_CONTROL +:Capability: KVM_CAP_TSC_CONTROL / KVM_CAP_VM_TSC_CONTROL :Architectures: x86 -:Type: vcpu ioctl +:Type: vcpu ioctl / vm ioctl :Parameters: virtual tsc_khz :Returns: 0 on success, -1 on error Specifies the tsc frequency for the virtual machine. The unit of the frequency is KHz. +If the KVM_CAP_VM_TSC_CONTROL capability is advertised, this can also +be used as a vm ioctl to set the initial tsc frequency of subsequently +created vCPUs. 4.56 KVM_GET_TSC_KHZ -------------------- -:Capability: KVM_CAP_GET_TSC_KHZ +:Capability: KVM_CAP_GET_TSC_KHZ / KVM_CAP_VM_TSC_CONTROL :Architectures: x86 -:Type: vcpu ioctl +:Type: vcpu ioctl / vm ioctl :Parameters: none :Returns: virtual tsc-khz on success, negative value on error |