Comment # 1 on bug 1091097 from Jiri Slaby

Tumbleweed has these already:
CONFIG_NET_9P=m
CONFIG_NET_9P_VIRTIO=m
CONFIG_NET_9P_XEN=m
CONFIG_NET_9P_RDMA=m

I.e.:
/lib/modules/4.16.2-10.ge881e16-default/kernel/fs/9p/9p.ko
/lib/modules/4.16.2-10.ge881e16-default/kernel/net/9p/9pnet_xen.ko
/lib/modules/4.16.2-10.ge881e16-default/kernel/net/9p/9pnet_virtio.ko
/lib/modules/4.16.2-10.ge881e16-default/kernel/net/9p/9pnet_rdma.ko
/lib/modules/4.16.2-10.ge881e16-default/kernel/net/9p/9pnet.ko


So what do you need to change exactly?