memtype_free_io(9)

💅 memtype_free_io(9) — the Kernel API Manual era 🎀

okay so bestie, welcome to memtype_free_io(9), straight out of the Kernel API Manual ✨ This one is a section 9 page, and it's literally the cleanup girlie of the memory-type world. Let's get into it 🫶

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🌸 NAME 🌸

memtype_free_io — release a memory type mapping for a region of memory. that's it, that's the whole vibe. it frees the thing 💖

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✨ SYNOPSIS ✨

void memtype_free_io (resource_size_t start , resource_size_t end );

no cap, that's the signature exactly as it's written — void, two resource_size_t args, done. periodt 🌈

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🦋 ARGUMENTS 🦋

• start — the start of the region, and yes bestie it's a physical address 💅
• end — the end of the region, also a physical address 🎀

like. start and end. the two ends of the region. iconic behavior honestly 🌸

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👑 SEE ALSO 👑

• kernel file ./arch/x86/mm/pat/memtype.c
• pat_bp_init(9)
• lookup_memtype(9)
• pat_pfn_immune_to_uc_mtrr(9)
• memtype_reserve_io(9)

iykyk, that's the whole friend group 🫶 go read them, they're all matching-energy ✨

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lowkey a lil reminder that this is the free counterpart — memtype_reserve_io(9) is right there in SEE ALSO if you need the other half of the story 👀 (that's just me pointing at the list, not adding lore, fr fr)

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and that's the page! 💜 brought to you by ./arch/x86/mm/pat, dated October 2026 — mwah, take care of her, she's a real one 🎀💖✨