> On Sep 17, 2018, at 9:16 AM, Jason A. Donenfeld <Jason@xxxxxxxxx> wrote: > >> On Mon, Sep 17, 2018 at 6:14 PM Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote: >> Indeed. What I'm saying is that you shouldn't refactor it this way >> because it will be slow. I agree it would be conceptually nice to be >> able to blacklist a chacha20_x86_64 module to disable the asm, but I >> think it would be very hard to get good performance. > > I hadn't understood your nosimd=1 command line suggestion the first > time through, but now I see what you were after. This would be really > easy to add. And I can do it for v5 if you want. But I'm kind of loath > to add too much stuff to the initial patchset. Do you think this is an > important feature to have for it? Or should I leave it for later? I think it’s fine for later. It’s potentially useful for benchmarking and debugging.
