The feature bitmap in the s390 virtio machine is little endian. To address for that, we need to bswap the values after reading them out.
Signed-off-by: Alexander Graf <ag...@suse.de> --- hw/s390-virtio-bus.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c index 58af164..60e0135 100644 --- a/hw/s390-virtio-bus.c +++ b/hw/s390-virtio-bus.c @@ -223,7 +223,7 @@ void s390_virtio_device_sync(VirtIOS390Device *dev) cur_offs += num_vq * VIRTIO_VQCONFIG_LEN; /* Sync feature bitmap */ - stl_phys(cur_offs, dev->host_features); + stl_phys(cur_offs, bswap32(dev->host_features)); dev->feat_offs = cur_offs + dev->feat_len; cur_offs += dev->feat_len * 2; @@ -246,7 +246,7 @@ void s390_virtio_device_update_status(VirtIOS390Device *dev) /* Update guest supported feature bitmap */ - features = ldl_phys(dev->feat_offs); + features = bswap32(ldl_phys(dev->feat_offs)); if (vdev->set_features) { vdev->set_features(vdev, features); } -- 1.6.0.2