ap_qci_available(9)

💅 ap_qci_available(9) — the Kernel API Manual, bestie edition 🎀

okay so real talk, this is from the Kernel API Manual, and it's about one tiny little function that does one tiny little vibe check. no cap, it's short. but we're gonna treat it with the respect it deserves because it's iconic in its own lowkey way ✨

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✨ NAME ✨

ap_qci_available — the function that tells you whether AP configuration info can be queried through the QCI subfunction. that's it. that's the whole job. she's got one task and she ate 💅

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🌸 SYNOPSIS 🌸

int ap_qci_available (void );

like, look at her. no drama, no parameters, just vibes 🦋

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🎀 ARGUMENTS 🎀

• void — literally no arguments. none. zero. she takes nothing from you, she just gives 🫶

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🔥 DESCRIPTION 🔥

So here's the tea ☕: this function returns 1 if the subfunction PQAP(QCI) is available.

and if it's not? well, it's not gonna return 1, iykyk 😌 that's the whole description. she's a one-liner queen and honestly? obsessed.

fr fr don't overthink this one, bestie — it's a yes/no situation and the "yes" case is 1 💖

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🦋 SEE ALSO 🦋

okay this is the part where the manpage goes absolutely feral and lists everything, and we love that for her. the kernel file in question lives at ./drivers/s390/crypto/ap_bus.c and here's the whole squad 👑

• ap_airq_ptr(9)
• ap_interrupts_available(9)
• ap_apft_available(9)
• ap_init_qci_info(9)
• ap_request_timeout(9)
• ap_poll_timeout(9)
• ap_interrupt_handler(9)
• ap_tasklet_fn(9)
• ap_poll_thread(9)
• ap_bus_match(9)
• ap_uevent(9)
• ap_owned_by_def_drv(9)
• ap_apqn_in_matrix_owned_by_def_drv(9)
• ap_select_domain(9)
• ap_get_configuration(9)
• ap_scan_bus(9)
• ap_module_init(9)

not me reading that list out loud like a roll call 😭 every single one of them is in there, no skips, we don't do that here 💀

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and that's the page, bestie 💜 this little gem lives in ./drivers/s390/crypto and it's stamped October 2026, so like… future-coded but make it kernel 🧚 slay, go query those AP configs responsibly ✨🌸