diff options
Diffstat (limited to 'Documentation/virtual/kvm/s390-diag.txt')
| -rw-r--r-- | Documentation/virtual/kvm/s390-diag.txt | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/virtual/kvm/s390-diag.txt b/Documentation/virtual/kvm/s390-diag.txt index 48c4921794ed..7c52e5f8b210 100644 --- a/Documentation/virtual/kvm/s390-diag.txt +++ b/Documentation/virtual/kvm/s390-diag.txt @@ -68,7 +68,8 @@ Subcode 3 - virtio-ccw notification identifier, it is ignored. After completion of the DIAGNOSE call, general register 2 may contain - a 64bit identifier (in the kvm_io_bus cookie case). + a 64bit identifier (in the kvm_io_bus cookie case), or a negative + error value, if an internal error occurred. See also the virtio standard for a discussion of this hypercall. |