1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2023 Loongson Technology Corporation Limited 4 * 5 * Based on arch/arm64/kernel/jump_label.c 6 */ 7 #include <linux/kernel.h> 8 #include <linux/jump_label.h> 9 #include <asm/cacheflush.h> 10 #include <asm/inst.h> 11 12 bool arch_jump_label_transform_queue(struct jump_entry *entry, enum jump_label_type type) 13 { 14 u32 insn; 15 void *addr = (void *)jump_entry_code(entry); 16 17 if (type == JUMP_LABEL_JMP) 18 insn = larch_insn_gen_b(jump_entry_code(entry), jump_entry_target(entry)); 19 else 20 insn = larch_insn_gen_nop(); 21 22 larch_insn_write(addr, insn); 23 24 return true; 25 } 26 27 void arch_jump_label_transform_apply(void) 28 { 29 flush_icache_all(); 30 } 31