Virtio 1.0 spec lists VIRTIO_NET_F_GSO as a legacy-only flag, by mistake we exposed it on the modern interface too, this is a spec violation.
I decided it's not worth it to implement a compatibility bit here as we already shipped virtio 1.0 support, we want to fix compatibility for old machine types too. While changing feature bits under guest's feet might be surprising, the spec doesn't exactly say it's illegal. Michael S. Tsirkin (2): virtio: allow per-device-class legacy features virtio-net: mark VIRTIO_NET_F_GSO as legacy include/hw/virtio/virtio.h | 5 +++++ hw/net/virtio-net.c | 1 + hw/s390x/virtio-ccw.c | 4 +++- hw/virtio/virtio-pci.c | 4 +++- hw/virtio/virtio.c | 2 ++ 5 files changed, 14 insertions(+), 2 deletions(-) -- MST
