diff options
Diffstat (limited to 'Documentation/virt')
| -rw-r--r-- | Documentation/virt/kvm/api.txt | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/virt/kvm/api.txt b/Documentation/virt/kvm/api.txt index 25931ca1cb38..b3368cb27e9b 100644 --- a/Documentation/virt/kvm/api.txt +++ b/Documentation/virt/kvm/api.txt @@ -586,7 +586,7 @@ Capability: basic Architectures: x86 Type: vcpu ioctl Parameters: struct kvm_msrs (in) -Returns: 0 on success, -1 on error +Returns: number of msrs successfully set (see below), -1 on error Writes model-specific registers to the vcpu. See KVM_GET_MSRS for the data structures. @@ -595,6 +595,11 @@ Application code should set the 'nmsrs' member (which indicates the size of the entries array), and the 'index' and 'data' members of each array entry. +It tries to set the MSRs in array entries[] one by one. If setting an MSR +fails, e.g., due to setting reserved bits, the MSR isn't supported/emulated +by KVM, etc..., it stops processing the MSR list and returns the number of +MSRs that have been set successfully. + 4.20 KVM_SET_CPUID |