diff options
| -rw-r--r-- | hw/virtio/virtio.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 5d607aeaa0..97a6307c0f 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -2980,6 +2980,13 @@ int virtio_set_features(VirtIODevice *vdev, uint64_t val) if (vdev->status & VIRTIO_CONFIG_S_FEATURES_OK) { return -EINVAL; } + + if (val & (1ull << VIRTIO_F_BAD_FEATURE)) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: guest driver for %s has enabled UNUSED(30) feature bit!\n", + __func__, vdev->name); + } + ret = virtio_set_features_nocheck(vdev, val); if (virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { /* VIRTIO_RING_F_EVENT_IDX changes the size of the caches. */ |