On Tue, Jan 05, 2016 at 08:00:45AM -0800, Eric Dumazet wrote: > On Tue, 2016-01-05 at 16:23 +0100, Rabin Vincent wrote: > > The SKF_AD_ALU_XOR_X ancillary is not like the other ancillary data > > instructions since it XORs A with X while all the others replace A with > > some loaded value. All the BPF JITs fail to clear A if this is used as > > the first instruction in a filter. > > Is x86_64 part of this 'All' subset ? ;) No, because it's an eBPF JIT.