insn_has_rep_prefix(9)

okay bestie, welcome to the Kernel API Manual page for insn_has_rep_prefix(9) — the tiny bool detective that checks for a REP prefix. It’s giving “short but iconic,” and we’re gonna read every crumb together, periodt. 💅✨

🎀 NAME 🎀

insn_has_rep_prefix — determine if instruction has a REP prefix. That’s the whole plot, no cap. 🫶

✨ SYNOPSIS ✨

bool insn_has_rep_prefix (struct insn *insn );

💖 ARGUMENTS 💖

• insn — Instruction containing the prefix to inspect. That’s the struct you’re vibe-checking, bestie. 🔍

🦋 DESCRIPTION 🦋

The vibe check is literally true if the instruction has a REP prefix, and false if not. That’s it — clean, simple, main character energy. 💀✨

🌈 SEE ALSO 🌈

The SEE ALSO list is basically the x86 instruction-eval group chat, and it starts with the Kernel file ./arch/x86/lib/insn-eval.c. Then all these besties get a shout-out, in this exact order:

• is_string_insn(9)
• get_seg_reg_override_idx(9)
• check_seg_overrides(9)
• resolve_default_seg(9)
• resolve_seg_reg(9)
• get_segment_selector(9)
• get_reg_offset_16(9)
• get_desc(9)
• insn_get_seg_base(9)
• get_seg_limit(9)
• insn_get_code_seg_params(9)
• insn_get_modrm_rm_off(9)
• insn_get_modrm_reg_off(9)
• insn_get_modrm_reg_ptr(9)
• get_seg_base_limit(9)
• get_eff_addr_reg(9)
• get_eff_addr_modrm(9)
• get_eff_addr_modrm_16(9)
• get_eff_addr_sib(9)
• get_addr_ref_16(9)
• get_addr_ref_32(9)
• get_addr_ref_64(9)
• insn_get_addr_ref(9)
• insn_fetch_from_user(9)
• insn_fetch_from_user_inatomic(9)
• insn_decode_from_regs(9)
• insn_decode_mmio(9)

That’s the whole page, bestie! This one comes from the ./arch/x86/lib source corner, stamped October 2026, with insn_has_rep_prefix(9) sparkling as the page title at the bottom. So official, so cute. 💖🎀🦋