On Thu, Jan 20, 2022 at 8:39 AM <guoren@xxxxxxxxxx> wrote: > + > +#ifdef CONFIG_COMPAT > + if (is_compat_task()) > + regs->status |= SR_UXL_32; > +#endif You should not need that #ifdef, as the is_compat_task() definition is meant to drop the code at compile time, unless the SR_UXL_32 definition is not visible here. Arnd