diff --git a/sys/dev/virtio/mmio/virtio_mmio.c b/sys/dev/virtio/mmio/virtio_mmio.c index 133eb5dbcea..0414706fb99 100644 --- a/sys/dev/virtio/mmio/virtio_mmio.c +++ b/sys/dev/virtio/mmio/virtio_mmio.c @@ -390,7 +390,13 @@ vtmmio_negotiate_features(device_t dev, uint64_t child_features) sc = device_get_softc(dev); + vtmmio_write_config_4(sc, VIRTIO_MMIO_HOST_FEATURES_SEL, 1); host_features = vtmmio_read_config_4(sc, VIRTIO_MMIO_HOST_FEATURES); + host_features <<= 32; + + vtmmio_write_config_4(sc, VIRTIO_MMIO_HOST_FEATURES_SEL, 0); + host_features |= vtmmio_read_config_4(sc, VIRTIO_MMIO_HOST_FEATURES); + vtmmio_describe_features(sc, "host", host_features); /* @@ -402,6 +408,11 @@ vtmmio_negotiate_features(device_t dev, uint64_t child_features) sc->vtmmio_features = features; vtmmio_describe_features(sc, "negotiated", features); + + vtmmio_write_config_4(sc, VIRTIO_MMIO_HOST_FEATURES_SEL, 1); + vtmmio_write_config_4(sc, VIRTIO_MMIO_GUEST_FEATURES, features >> 32); + + vtmmio_write_config_4(sc, VIRTIO_MMIO_HOST_FEATURES_SEL, 0); vtmmio_write_config_4(sc, VIRTIO_MMIO_GUEST_FEATURES, features); return (features);