efi_get_memory_map(9)

🌸 efi_get_memory_map(9) 🌸

okay so bestie, welcome to the Kernel API Manual — yes, THE kernel API manual, we're doing big things today 💅 this one's all about grabbing yourself a memory map, and it's honestly kind of iconic.

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✨ NAME ✨

efi_get_memory_map — get memory map 🗺️ (that's it, that's the whole vibe)

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🎀 SYNOPSIS 🎀

efi_status_t efi_get_memory_map (struct efi_boot_memmap **map , bool
install_cfg_tbl );

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🦋 ARGUMENTS 🦋

• map — a pointer to a memory map pointer, and that's where the newly allocated memory map gets assigned fr fr. it's pointer-to-a-pointer, she's layered, she's complex, we love her 🫶
• install_cfg_tbl — a bool that decides whether or not you're installing the boot memory map as a configuration table. yes or no, bestie, no in-between 🙈

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💖 DESCRIPTION 💖

so what does she actually DO? literally just retrieves the UEFI memory map. that's the whole personality 💀

but here's the detail you can't skip: the allocated memory leaves room for up to EFI_MMAP_NR_SLACK_SLOTS additional memory map entries — so there's built-in wiggle room, she's extra in the best way, main character energy honestly ✨

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⭐ RETURN ⭐

status code. that's the answer, she returns a status code 😌

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/firmware/efi/libstub/mem.c
• efi_allocate_pages(9)
• efi_free(9)
• efi_low_alloc_above(9)

go read those too, iykyk 📚

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kay that's the whole page bestie, you ate that 💅 this lil gem lives in ./drivers/firmware/efi/libstub, dated October 2026, and it's efi_get_memory_map(9) — go forth and map some memory, mwah 🍓🧚