efi_memmap_insert(9)

💅 efi_memmap_insert — a Kernel API Manual moment

okay bestie, so this is efi_memmap_insert(9) from the Kernel API Manual, and it's literally the glow-up your EFI memory map has been waiting for ✨

---

✨ NAME ✨

efi_memmap_insert — insert a memory region in an EFI memmap 🫶

---

🎀 SYNOPSIS 🎀

void efi_memmap_insert (struct efi_memory_map *old_memmap , void *buf ,
struct efi_mem_range *mem );

like. that's the whole vibe. three args, no notes 💅

---

🌸 ARGUMENTS 🌸

• old_memmap — the existing EFI memory map structure, aka the one you already have 👑
• buf — address of the buffer where the new map gets stored, this is the fresh fit 🔥
• mem — the memory map entry you're inserting, the main character of this whole operation ⭐

---

🦋 DESCRIPTION 🦋

so before you just start shoving stuff in — it is suggested that you call efi_memmap_split_count first to see how large buf needs to be 🧚 like, size check your buffer, babe. no cap.

---

🌈 SEE ALSO 🌈

• Kernel file ./arch/x86/platform/efi/memmap.c
• efi_memmap_alloc(9)
• efi_memmap_install(9)
• efi_memmap_split_count(9)

---

ok that's the whole page, go forth and insert responsibly 💖

and that's the sign-off bestie — this gem lives in ./arch/x86/platform/efi and it's dated October 2026, slay 🎀✨