diff options
Diffstat (limited to 'hw/virtio.c')
| -rw-r--r-- | hw/virtio.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/hw/virtio.c b/hw/virtio.c index 1f92171f6..cecd0dc04 100644 --- a/hw/virtio.c +++ b/hw/virtio.c @@ -651,6 +651,9 @@ void virtio_save(VirtIODevice *vdev, QEMUFile *f) int virtio_load(VirtIODevice *vdev, QEMUFile *f) { int num, i, ret; + uint32_t features; + uint32_t supported_features = vdev->get_features(vdev) | + vdev->binding->get_features(vdev->binding_opaque); if (vdev->binding->load_config) { ret = vdev->binding->load_config(vdev->binding_opaque, f); @@ -661,7 +664,13 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f) qemu_get_8s(f, &vdev->status); qemu_get_8s(f, &vdev->isr); qemu_get_be16s(f, &vdev->queue_sel); - qemu_get_be32s(f, &vdev->features); + qemu_get_be32s(f, &features); + if (features & ~supported_features) { + fprintf(stderr, "Features 0x%x unsupported. Allowed features: 0x%x\n", + features, supported_features); + return -1; + } + vdev->features = features; vdev->config_len = qemu_get_be32(f); qemu_get_buffer(f, vdev->config, vdev->config_len); |