On (02/01/16 16:20), Nicolas Dichtel wrote: > There is also the tile architecture, up to 76 cores on the board I've seen. It > requires an alignment on 8! > I wonder how this case may be properly handled. A simple ipip scenario fails.
Yes, I'm also observing the same thing. Simply setting up gretap like this results in # ip link add gretap2 type gretap local myaddr remote hisaddr # ifconfig gretap2 up Kernel unaligned access at TPC[969d88] iptunnel_xmit+0xa4/0x1c0 Kernel unaligned access at TPC[969db0] iptunnel_xmit+0xcc/0x1c0 Kernel unaligned access at TPC[969dc4] iptunnel_xmit+0xe0/0x1c0 Kernel unaligned access at TPC[969dc8] iptunnel_xmit+0xe4/0x1c0 Kernel unaligned access at TPC[9191fc] __ip_select_ident+0x80/0x13c and afacit, the unaligned ip header is triggered by an inner ipv6 packet that is usually coming from mld or dad. (and fwiw, the basic iperf/ipv6 test is fine with Tom's patch, need to try out some of the other permutations without rps etc)
