diff options
| -rw-r--r-- | hw/s390x/virtio-ccw.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index 613d8c6615..771411ea3c 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -35,6 +35,8 @@ #include "trace.h" #include "hw/s390x/css-bridge.h" +#define NR_CLASSIC_INDICATOR_BITS 64 + static void virtio_ccw_bus_new(VirtioBusState *bus, size_t bus_size, VirtioCcwDevice *dev); @@ -509,6 +511,11 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw) ret = -ENOSYS; break; } + if (virtio_get_num_queues(vdev) > NR_CLASSIC_INDICATOR_BITS) { + /* More queues than indicator bits --> trigger a reject */ + ret = -ENOSYS; + break; + } if (!ccw.cda) { ret = -EFAULT; } else { |