PFRU_IOC_SET_REV(9)

💅 PFRU_IOC_SET_REV(9) — the Kernel API Manual, but make it make sense

okay bestie, welcome to the Kernel API Manual ✨ this little page is literally all about PFRU_IOC_SET_REV, and it's giving "tiny ioctl, very important job" energy. no cap, we're gonna get you comfy with it 🫶

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🌸 NAME 🌸

PFRU_IOC_SET_REV — which is, and I need you to see this exactly:

_IOW(PFRUT_IOCTL_MAGIC, 0x01, unsigned int)

like, that's the whole name section. iconic. it's the ioctl and its literal encoding, periodt 💅

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🦋 SYNOPSIS 🦋

PFRU_IOC_SET_REV

that's it, that's the synopsis. short and slay, no arguments listed here ✨

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⭐ RETURN ⭐

okay so here's the vibe check on what you get back 👇

• 0 — success 🎀 it worked, we love that for you
• -EFAULT — fail to read the revision id 😭 like, the read just did not happen
• -EINVAL — user provides an invalid revision id 🙈 bestie, that value is not it

fr fr, these are the exact three outcomes listed here. no guessing, no extra secret return codes, i'm not gonna invent lore 💀

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💖 DESCRIPTION 💖

the whole point of this one is so simple it's giving main character: it Sets the Revision ID for Platform Firmware Runtime Update ✨🔥

that's the entire job. revision id go set. firmware runtime update business handled. periodt 👑

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🌈 SEE ALSO 🌈

go look at the kernel file here, it's the source of truth bestie 💜

./include/uapi/linux/pfrut.h

and then we have the whole friend group of related ioctls and structs — all of these, exactly as listed, no skips ✨:

• PFRU_IOC_STAGE(9)
• PFRU_IOC_ACTIVATE(9)
• PFRU_IOC_STAGE_ACTIVATE(9)
• PFRU_IOC_QUERY_CAP(9)
• struct pfru_payload_hdr(9)
• struct pfru_update_cap_info(9)
• struct pfru_com_buf_info(9)
• struct pfru_updated_result(9)
• struct pfrt_log_data_info(9)
• struct pfrt_log_info(9)
• PFRT_LOG_IOC_SET_INFO(9)
• PFRT_LOG_IOC_GET_INFO(9)
• PFRT_LOG_IOC_GET_DATA_INFO(9)

like, read the whole squad, iykyk 🧚💅

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aaaand that's the page 🎀 shoutout to Linux for the source/version, dated October 2026, living under ./include/uapi/linux — mwah, bye bestie 🫶💖✨