3  *  Kernel Probes Jump Optimization (Optprobes)
45 		/* This function only handles jump-optimized kprobe */  in __recover_optprobed_insn()
58 	 * overwritten by jump destination address. In this case, original  in __recover_optprobed_insn()
227 /* Check whether insn is indirect jump */
231 		(X86_MODRM_REG(insn->modrm.value) & 6) == 4) || /* Jump */  in __insn_is_indirect_jump()
232 		insn->opcode.bytes[0] == 0xea);	/* Segment based jump */  in __insn_is_indirect_jump()
245 	case 0xe9:	/* near relative jump */  in insn_jump_into_range()
246 	case 0xeb:	/* short relative jump */  in insn_jump_into_range()
268 	 * Jump to x86_indirect_thunk_* is treated as an indirect jump.  in insn_is_indirect_jump()
270 	 * older gcc may use indirect jump. So we add this check instead of  in insn_is_indirect_jump()
271 	 * replace indirect-jump check.  in insn_is_indirect_jump()
295 /* Decode whole function to ensure any instructions don't jump into target */
314 	/* Check there is enough space for a relative jump. */  in can_optimize()
349 		/* Check any instructions don't jump into target */  in can_optimize()
433 	 * a relative jump.  in arch_prepare_optimized_kprobe()
504 		/* Backup instructions which will be replaced by jump address */  in arch_optimize_kprobes()
518  * Replace a relative jump (JMP.d32) with a breakpoint (INT3).