alternative_insn 114 arch/arm64/include/asm/alternative.h .macro alternative_insn insn1, insn2, cap, enable = 1 alternative_insn 220 arch/arm64/include/asm/alternative.h alternative_insn insn1, insn2, cap, IS_ENABLED(cfg) alternative_insn 223 arch/arm64/include/asm/alternative.h 9999: alternative_insn "\oldinstr", "\newinstr", \cond