vmbus_free_mmio(9)

💖 vmbus_free_mmio(9) — the Kernel API Manual page, bestie edition 💖

okay so you found the vmbus_free_mmio(9) page in the Kernel API Manual and you're like "what does this even do" — don't worry, I gotchu, let's go ✨

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🌸 NAME 🌸

vmbus_free_mmio — free a memory-mapped I/O range. that's it. that's the whole vibe. she releases, she frees, she gives the range back 💅

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✨ SYNOPSIS ✨

void vmbus_free_mmio (resource_size_t start , resource_size_t size );

no return value, nothing to catch, she just does the thing and dips 🫶

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🎀 ARGUMENTS 🎀

• start — the base address of the region you're releasing. this is the "where does it start" of it all 📍
• size — the size of the range. real talk, the original page literally says "size of the range to be allocated" which is a little silly for a free function, but that is exactly what it says so I'm not gonna pretend otherwise 💀

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🦋 DESCRIPTION 🦋

this function releases anything that was requested by vmbus_mmio_allocate. that's the whole plot — you allocated, now you free, balance is restored, the universe is at peace 🌈

lowkey the moral of this story is: if you call vmbus_mmio_allocate, you better be calling vmbus_free_mmio too. crumbs of accountability, bestie 🙈

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🔥 SEE ALSO 🔥

kernel file ./drivers/hv/vmbus_drv.c, plus these absolute icons:

• __vmbus_driver_register(9)
• vmbus_driver_unregister(9)
• hv_create_ring_sysfs(9)
• hv_remove_ring_sysfs(9)
• vmbus_allocate_mmio(9)

go read them, they're giving main character energy too 👑

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and that's the page!! 💜 sign-off time: this lil masterpiece lives in ./drivers/hv and the version/date on it is October 2026 — so yeah, she's from the future, we stan a time traveler 💅✨🎀