agp_allocate_memory(9)

💖 agp_allocate_memory(9) 💖

okay so bestie, welcome to the Kernel API Manual — yes we're reading kernel docs together, this is our bonding era 🫶 and today's main character is agp_allocate_memory, and it does exactly what it says on the tin: it allocates a group of pages of a certain type. iconic behavior, no notes ✨

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🌸 NAME 🌸

agp_allocate_memory — allocate a group of pages of a certain type 💅

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🎀 SYNOPSIS 🎀

struct agp_memory * agp_allocate_memory (struct agp_bridge_data *bridge
, size_t page_count , u32 type );

like, that's the whole vibe. copy it exactly, don't get creative with it 😭

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🦋 ARGUMENTS 🦋

• bridge — an agp_bridge_data struct that's been allocated for the AGP host bridge. it's the whole reason we're here, the host bridge in question, the moment, the event 🫶
• page_count — a size_t argument holding the number of pages. yes, a size_t. yes, it's the count. yes, it's literally in the name, we love a self-explanatory king 👑
• type — a u32 argument of the type of memory to be allocated. which type? read the next section bestie, i got you 💖

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✨ DESCRIPTION ✨

so here's the tea ☕ — every agp bridge device will let you allocate AGP_NORMAL_MEMORY, and that one maps to physical ram. easy, universal, everyone gets it, slay 🌈

any other type? that's device dependent, meaning it's giving "it depends on your hardware" energy and you cannot just assume it'll work 💀 the device decides, not you.

🚨 and the important bit: it returns NULL whenever memory is unavailable. so check your return value bestie, don't be out here dereferencing NULL, that's not the vibe, that's a crash 😭🙈

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👑 SEE ALSO 👑

• kernel file ./drivers/char/agp/generic.c 📁 — go read the source, the source knows all
• agp_free_memory(9) — the one you call after, because we clean up after ourselves 💅
• agp_copy_info(9)
• agp_bind_memory(9)
• agp_unbind_memory(9)
• agp_collect_device_status(9)
• agp_enable(9)

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aaaand that's the page 🦋💜 go allocate responsibly, check for NULL, free your memory, and remember: the whole family lives in ./drivers/char/agp — yeah that's the directory, and the docs are dated October 2026, so we're lowkey reading from the future ngl ✨ periodt. 💅🎀