From 2a083ffd2e37ef08769749a5c7cfc6ca65c9f8ea Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Fri, 4 Nov 2016 12:27:52 +0200 Subject: [PATCH] virtio-net: mark VIRTIO_NET_F_GSO as legacy virtio 1.0 spec says this is a legacy feature bit, hide it from guests in modern mode. Note: for cross-version migration compatibility, we keep the bit set in host_features. The result will be that a guest migrating cross-version will see host features change under it. As guests only seem to read it once, this should not be an issue. Meanwhile, will work to fix guests to ignore this bit in virtio1 mode, too. Cc: qemu-stable@nongnu.org Signed-off-by: Michael S. Tsirkin Reviewed-by: Cornelia Huck --- hw/net/virtio-net.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 20aa63e16c..b68c69d8f6 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -1942,6 +1942,7 @@ static void virtio_net_class_init(ObjectClass *klass, void *data) vdc->guest_notifier_pending = virtio_net_guest_notifier_pending; vdc->load = virtio_net_load_device; vdc->save = virtio_net_save_device; + vdc->legacy_features |= (0x1 << VIRTIO_NET_F_GSO); } static const TypeInfo virtio_net_info = {