On Mon, May 14, 2018 at 12:41:10PM +0100, Mark Rutland wrote: > I agree it would be nicer if it had a wrapper that took a pt_regs, even > if it does nothing with it. > > We can't use SYSCALL_DEFINE0() due to the fault injection muck, we'd > need a ksys_ni_syscall() for our traps.c logic, and adding this > uniformly would involve some arch-specific rework for x86, too, so I > decided it was not worth the effort. Couldn't you just open-code the "return -ENOSYS;" in traps.c? Error injection has no reasonable stable ABI/API expectations, so that's not a show-stopper either. Thanks, Dominik
