On Fri, 2017-04-14 at 11:42 -0700, Alexei Starovoitov wrote: > bpf takes endianness of the cpu it runs on.
Ok, so then things are actually not as difficult as I thought. > if we said that bpf 32-bit load insn is little endian, it would have > screwed up all big-endian archs and the other way around. Right. But then basically we do only need to have builtins for endian conversion, and #define them appropriately, as done anywhere else. Perhaps we want to eventually be able to take advantage of "other- endian" loads the CPU may have through the JIT, but getting it correct first would be good :) Either way though, it could be done with something like inline assembly. johannes
