arm_smccc_get_version(9)

💖 arm_smccc_get_version 💖

okay so this is a page from the Kernel API Manual — yes, the actual kernel docs, bestie, we're reading kernel docs today and we're gonna have a good time 🫶

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✨ NAME ✨

arm_smccc_get_version — and honestly the original leaves the description blank after the dash, so like... that's it. That's the whole name section. Iconic minimalism, no notes 💅

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🌸 SYNOPSIS 🌸

u32 arm_smccc_get_version (void );

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🎀 ARGUMENTS 🎀

• void — no arguments. none. zero. the call takes nothing from you, she works alone, main character energy fr fr 👑

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🦋 DESCRIPTION 🦋

so what does she actually do? she returns the version to be used for SMCCCv1.1 or later ✨ that's the version number you get back, that's the vibe check result, that's the whole job.

and here's the important part, bestie, listen up 🙈 — when SMCCCv1.1 or above is not present, she returns SMCCCv1.0. but — and this is the lowkey crucial bit — that does not imply the presence of firmware or a valid conduit. like, at all. it's literally just saying "bestie this is at most v1.0 territory," not "bestie the firmware is definitely there and everything is fine."

so if you're a caller handling SMCCCv1.0, you have to determine the conduit by other means. that's on you, not on her. she's not gonna hold your hand on this one 🫶

⚠️ real talk: don't read the v1.0 return value as proof of firmware or a conduit. it isn't. figure that out separately, okay? no cap 💀

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🌈 SEE ALSO 🌈

• ./include/linux/arm-smccc.h — the kernel file, go read it, she's right there in ./include/linux
• arm_smccc_1_1_get_conduit(9)
• arm_smccc_get_soc_id_version(9)
• arm_smccc_get_soc_id_revision(9)
• struct arm_smccc_res(9)
• struct arm_smccc_1_2_regs(9)
• arm_smccc_1_2_hvc(9)
• arm_smccc_1_2_smc(9)
• struct arm_smccc_quirk(9)
• __arm_smccc_smc(9)
• __arm_smccc_hvc(9)

like the whole SMCCC friend group showed up to the group chat 💜

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and that's the page!! 🎀 she lives in ./include/linux and this version is dated October 2026 — so yeah, future-dated kernel lore, obsessed ⭐ slay, go call your conduits responsibly bestie 💖