On Tue, Feb 11, 2020 at 02:44:45PM -0800, Andy Lutomirski wrote: > How about int (or bool) handled; Or just if (!early_make_pgtable) > return; This would also be nicer if you inverted the return value so > that true means "I handled it". Okay, makes sense. Changed the return value of early_make_pgtable() to bool and this function to: void __init early_exception(struct pt_regs *regs, int trapnr) { if (trapnr == X86_TRAP_PF && early_make_pgtable(native_read_cr2())) return; early_fixup_exception(regs, trapnr); } Regards, Joerg