intel_guc_auth_huc(9)

👑 intel_guc_auth_huc — Kernel API Manual 💅

okay so this is a page from the Kernel API Manual, and bestie, it's literally about telling the GuC to go authenticate the HuC firmware. tiny function, huge main character energy. let's get into it ✨

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🌸 NAME 🌸

intel_guc_auth_huc — send an action over to the GuC so it can authenticate the HuC ucode 🫶

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🦋 SYNOPSIS 🦋

int intel_guc_auth_huc (struct intel_guc *guc , u32 rsa_offset );

that's it. that's the whole signature. no cap. 🎀

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💖 ARGUMENTS 💖

• guc — the intel_guc structure, iykyk. this is the GuC we're talking to 💫
• rsa_offset — the rsa offset w.r.t ggtt base of huc vma. yes that's the exact wording, don't come for me, it's the spec 🙈

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✨ DESCRIPTION ✨

so what it does is trigger a HuC firmware authentication request to the GuC, and it does that through the intel_guc_send / INTEL_GUC_ACTION_AUTHENTICATE_HUC interface 🔥

and who calls it? intel_huc_auth does. so this function is lowkey the middleman — intel_huc_auth shows up, this thing forwards the vibe check to the GuC, GuC handles the actual auth. teamwork, honestly 💜

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🍓 RETURN 🍓

non-zero code on error 😭 — so if it comes back 0, we're slaying, and if it doesn't, something went wrong, periodt.

ngl, always check the return value. non-zero = error. this is not a drill 💀

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🧚 SEE ALSO 🧚

• Kernel file ./drivers/gpu/drm/i915/gt/uc/intel_guc.c GuC(9)
• intel_guc_suspend(9)
• intel_guc_resume(9)
• GuC Memory Management(9)
• intel_guc_allocate_vma(9)
• intel_guc_allocate_and_map_vma(9)
• intel_guc_load_status(9)

go read those if you want the full lore, fr fr 📚

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and that's the page, bestie 🎀 this lil gem lives in ./drivers/gpu/drm/i915/gt/uc, dated October 2026, and it's intel_guc_auth_huc(9) all day every day. mwah 💋✨