ap_qci(9)

💅 ap_qci(9) — bestie's kernel API cheat sheet

okay so this is ap_qci(9), straight out of the Kernel API Manual, and it's basically the "hey bestie, spill the AP config tea" call. it's a little guy but it does exactly one job and it does it with zero drama. let's get into it 🎀

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✨ NAME ✨

ap_qci — get AP configuration data. that's it. that's the whole vibe. it grabs the AP config info for you, no cap 💖

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🌸 SYNOPSIS 🌸

int ap_qci (struct ap_config_info *config );

literally one call, one arg, one return value. iconic minimalism ngl ✨

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🦋 ARGUMENTS 🦋

• config — -- undescribed -- 🙈

okay so the docs genuinely just say -- undescribed -- here and i'm not gonna lie to you and make something up, because that would be a fake vibe check fail. it's a struct ap_config_info *, it's the thing you pass in, and that's all the manual is giving us. periodt 💅

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🔥 DESCRIPTION 🔥

so you call it, and it returns 0 on success. that's it, that's the win condition, we love a zero 🫶

or it returns -EOPNOTSUPP — i.e. "bestie, this isn't supported", operation not supported, the classic polite no 😭

that's genuinely the entire description. short queen behavior. she said "two outcomes, take it or leave it" 👑

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🌈 SEE ALSO 🌈

the whole friend group, all linked in the kernel file ./arch/s390/include/asm/ap.h:

• struct ap_queue_status(9)
• ap_instructions_available(9)
• ap_tapq(9)
• ap_test_queue(9)
• struct ap_config_info(9)
• ap_aqic(9)
• ap_qact(9)
• ap_nqap(9)
• ap_dqap(9)

go read the whole clique, they all hang out together 🧚💜

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💀 real talk though: if you're expecting a long description, you're not getting one. ap_qci(9) is a short page. don't go inventing extra behavior for it — that's how you end up spreading misinformation in the group chat.

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and that's the page!! source is ./arch/s390/include/asm (yep, the s390 corner of the kernel, we stan), it's dated October 2026, and it's filed as ap_qci(9) — go forth and get that config data bestie 🍓💖✨