cpuid_subleaf_n_raw(9)

💖 NAME 💖

okay so welcome to cpuid_subleaf_n_raw(9) in the Kernel API Manual, bestie 💅 this page is all about accessing parsed CPUID data for a leaf with a subleaf range. no cap.

✨ SYNOPSIS ✨

cpuid_subleaf_n_raw (_cpuinfo , _leaf , _subleaf );

🎀 ARGUMENTS 🎀

• _cpuinfo — your reference to the CPU capability structure (struct cpuinfo_x86). literally the CPU-info bestie 🫶
• _leaf — the CPUID leaf, in compile-time 0xN format; e.g. 0x4, 0x8000001d. keep it exact, okay?
• _subleaf — the subleaf number, and yes it can be passed dynamically ✨ it must be smaller than cpuid_subleaf_count(_cpuinfo, _leaf). that's the rule 💅

🦋 DESCRIPTION 🦋

Similar to cpuid_subleaf_n, but instead of giving you a “typed” <asm/cpuid/leaf_types.h> pointer, it returns a raw struct cpuid_regs pointer to the parsed CPUID data. it’s giving “same energy, rawer pointer” 😭🔥

🌸 SEE ALSO 🌸

Kernel file: ./arch/x86/include/asm/cpuid/api.h — and here’s the whole friend group:

• cpuid_leaf_0x2(9)
• for_each_cpuid_0x2_desc(9)
• cpuid_subleaf(9)
• cpuid_leaf(9)
• cpuid_leaf_raw(9)
• cpuid_subleaf_n(9)
• cpuid_subleaf_count(9)

xoxo, this page is sourced from ./arch/x86/include/asm/cpuid, dated October 2026, and it’s cpuid_subleaf_n_raw(9) signing off — bye bestie 👑💜