intel_guc_ct_enable(9)

💖 intel_guc_ct_enable 💖

okay so bestie, welcome to the Kernel API Manual — yes, that's the manual name, we're fancy now ✨ — and today's main character is intel_guc_ct_enable, which is literally the function that turns on the buffer based command transport. no cap, that's the whole vibe. it enables the CT. iconic behaviour honestly 🎀

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✨ SYNOPSIS ✨

int intel_guc_ct_enable (struct intel_guc_ct *ct );

that's it, that's the whole call. one pointer, one int coming back at you 🦋

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🌸 ARGUMENTS 🌸

• ct — pointer to the CT struct. just the one, bestie. hand it over and let it cook 💅

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⭐ RETURN ⭐

• 0 on success — slay, it worked 🎉
• a negative errno code on failure — 😭 not slay, but at least it tells you why in errno form

fr fr, do not treat the negative errno as a boolean and go "it's not zero so it's fine" — check it properly, okay? 💀

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c — the source file where the magic lives, go read it iykyk 👑
• CTB Blob(9)
• intel_guc_ct_init_early(9)
• intel_guc_ct_init(9)
• intel_guc_ct_fini(9)
• intel_guc_ct_disable(9)
• wait_for_ct_request_update(9)

all of these are part of the ct cinematic universe, so like… the whole friend group 🫶

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and that's the page! it lives under ./drivers/gpu/drm/i915/gt/uc, it's dated October 2026, and the header/footer both call it intel_guc_ct_enable(9) — go enable that transport, bestie, you've got this 🧚💜