STRUCT INTEL_VSEC_HEADER(9)

💖 struct intel_vsec_header(9) 💖

okay so welcome to the Kernel API Manual, bestie — this one is all about the common fields of Intel VSEC and DVSEC registers. it’s giving “tiny struct, big discovery-table energy,” and we’re gonna go through every single member together, no cap. 🫶

✨ NAME ✨

struct intel_vsec_header — the common fields of Intel VSEC and DVSEC registers. literally the shared header vibe for both of them. 💅

🛠️ SYNOPSIS 🛠️

struct intel_vsec_header {
    u8 rev;
    u16 length;
    u16 id;
    u8 num_entries;
    u8 entry_size;
    u8 tbir;
    u32 offset;
 };

🧚 Members 🧚

• rev — the Revision ID of the VSEC/DVSEC register space. it’s the “which version are we on” field, periodt. ⭐
• length — the Length of the VSEC/DVSEC register space. yes bestie, it tells you how long the register space is. 📏
• id — the ID of the feature. this is the feature’s little name tag. 🎀
• num_entries — the Number of instances of the feature. if the feature is showing up multiple times, this is the count. 🔢
• entry_size — the Size of the discovery table for each feature. one table per feature, and this is how big each one is. 🧚
• tbir — the BAR containing the discovery tables. that’s the BAR where the discovery tables live. 🏠
• offset — the BAR offset of start of the first discovery table. so it’s where the first discovery table begins inside that BAR. 📍

👀 SEE ALSO 👀

Kernel file ./include/linux/intel_vsec.h — and also these iconic little references:

• struct pmt_callbacks(9)
• struct intel_vsec_platform_info(9)
• struct intel_vsec_device(9)
• struct oobmsm_plat_info(9)

mwah 💋 — this page lives under ./include/linux, dated October 2026, and it’s literally struct intel_vsec_header(9). slay. 🌈👑