__CPUID_LEAF(9)

💖 __CPUID_LEAF(9) — Kernel API Manual 💖

okay so bestie, this is __CPUID_LEAF(9) from the Kernel API Manual, and it's literally here to define a CPUID output and parse info entry. No cap, that's the whole name vibe. 🦋

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🎀 NAME 🎀

__CPUID_LEAF — define a CPUID output and parse info entry. Periodt. 💅

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✨ SYNOPSIS ✨

__CPUID_LEAF (_name , _count );

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🫶 ARGUMENTS 🫶

• _name — the struct type name of the CPUID leaf/subleaf, like 'leaf_0x7_0'. These types are defined at <cpuid/leaf_types.h> and follow the leaf_0xM_N format, where 0xM is the leaf and N is the subleaf. The naming is giving structured, and we love that for us. 🌸
• _count — number of storage entries to allocate for this leaf/subleaf. That's the count, bestie. ✨

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🌈 DESCRIPTION 🌈

For a given leaf/subleaf, this defines an array of CPUID storage entries and an associated query info structure. It's giving setup, and honestly? Iconic. 🔥

Use an array of storage entries to accommodate CPUID leaves with multiple subleaves having the same output format. This is common for hierarchical enumeration; e.g., CPUID(0x4), CPUID(0x12), and CPUID(0x8000001d). Slay. 👑

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🦋 SEE ALSO 🦋

• Kernel file ./arch/x86/include/asm/cpuid/types.h
• struct leaf_parse_info(9)
• CPUID_LEAF(9)
• CPUID_LEAF_N(9)
• struct cpuid_table(9)

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Mwah 💋 — source: ./arch/x86/include/asm/cpuid, date/version: October 2026, page: __CPUID_LEAF(9). Bye bestie, go parse those CPUID leaves 💜✨