summaryrefslogtreecommitdiff
path: root/Documentation/virtual/kvm/s390-diag.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/virtual/kvm/s390-diag.txt')
-rw-r--r--Documentation/virtual/kvm/s390-diag.txt3
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.