iounmap(9)

💅 iounmap(9) 💅

okay so bestie, this is iounmap(9), straight out of the Kernel API Manual, and it's giving “clean up your IO remapping” energy. ✨ Let's get into it.

🌸 NAME 🌸

iounmap — Free a IO remapping. That's the whole vibe. 💖

🦋 SYNOPSIS 🦋

void iounmap (volatile void __iomem *addr );

💖 ARGUMENTS 💖

• addr — virtual address from ioremap_*. yep, that exact kind of address, bestie. 🫶

🔥 DESCRIPTION 🔥

Caller must ensure there is only one unmapping for the same pointer.

no cap, this is the rule: the caller has to make sure there's only one unmapping for the same pointer. Not two. Not a little bonus unmapping. One. 💅

🌈 SEE ALSO 🌈

• Kernel file ./arch/x86/mm/ioremap.c
• ioremap(9)
• ioremap_uc(9)
• ioremap_wc(9)
• ioremap_wt(9)

these are the icons you're gonna want to check out too — iykyk. 🦋

xoxo 💜 source/version is ./arch/x86/mm, and the date is October 2026. periodt. 🎀