S V <ner...@gmail.com> wrote: > 2023-07-27 17:24 GMT+03:00, Theo de Raadt <dera...@openbsd.org>: > > You don't explain why you are trying to enable floating point register > > use in the kernel. > > I just have CPU with it (Cortex-a57 with NEON), so was toying with it > trying to look if I get more performance. > Got this error and decided to post, thinking - maybe I got some "not > yet discovered" problem. > > I'm not good with kernel development (sent only simple patches) so was > curious about it.
What you are trying to do won't work at all. If the kernel uses floating point registers, it must save/restore them at multiple types of context switching points, which is why kernels normally do not do this, except in very controlled fashion. One doesn't set a compile option, and get this. You are in way over your head
