STRUCT FSL_HV_IOCTL_DOORBELL(9)

✨ struct fsl_hv_ioctl_doorbell — ring a doorbell 💅

okay bestie, welcome to the Kernel API Manual 🎀 this one's a lil struct from the kernel's userspace API headers and honestly? she's small, she's cute, she does exactly one thing. let's get into it 🦋

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🌸 NAME 🌸

struct fsl_hv_ioctl_doorbell — literally just ring a doorbell 🔔✨

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🎀 SYNOPSIS 🎀

struct fsl_hv_ioctl_doorbell {
    __u32 ret;
    __u32 doorbell;
 };

like... that's the whole thing. two __u32s and a dream 😭 so minimalist, so iconic 👑

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💖 Members 💖

• ret — the return error code from the hypervisor 🧚 this is where the hypervisor tells you how it went, so lowkey pay attention to it fr fr
• doorbell — the handle of the doorbell to ring doorbell 🔔 yes the description says "ring doorbell," we're all just vibing with that phrasing, it's giving documentation written at 2am and honestly? relatable 💀 this field holds which doorbell you're ringing, iykyk

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✨ Description ✨

Used by FSL_HV_IOCTL_DOORBELL 🫶 that's it. that's the whole description. she's a supporting character in the FSL_HV_IOCTL_DOORBELL storyline and she's slaying her limited screen time 🌟

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🔥 SEE ALSO 🔥

• Kernel file ./include/uapi/linux/fsl_hypervisor.h
• struct fsl_hv_ioctl_restart(9)
• struct fsl_hv_ioctl_status(9)
• struct fsl_hv_ioctl_start(9)
• struct fsl_hv_ioctl_stop(9)
• struct fsl_hv_ioctl_memcpy(9)
• struct fsl_hv_ioctl_prop(9)

the whole squad is here 🫂 go read them too, they're all in the same header, main character energy all around 👑

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ngl there's not a ton to say about a two-field struct, and that's the vibe — no cap, every detail up there is everything the page gives you 💖

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mmm okay that's the page! sourced from ./include/uapi/linux, dated October 2026, and the page itself is struct fsl_h...ctl_doorbell(9) — and yes the header/footer abbreviate it like that, we don't make the rules 🙈 byeee, go ring that doorbell 🔔💜