STRUCT MEMBLOCK(9)

📦 version 7.3.1, in nixpkgs unstable

✨ struct memblock(9) ✨

okay bestie, listen up 💖 this is struct memblock, like, the memblock allocator metadata ✨ — literally the little info packet that runs the whole early-boot memory show. it lives in the kernel API manual and honestly? it's giving foundational. not me being obsessed with boot-time memory management but here we are 🎀

🌸 SYNOPSIS 🌸

like, here's the whole vibe, character for character:

struct memblock {
    bool bottom_up;
    phys_addr_t current_limit;
    struct memblock_type memory;
    struct memblock_type reserved;
 };

that's it. that's the struct. four fields and a dream 🦋

💅 Members 💅

okay so let's meet the cast, one field at a time 👑

  • bottom_up — is this whole thing going bottom up direction? that's the question this bool is answering. yes or no, babe. 🔥
  • current_limit — the physical address of the current allocation limit. that's where the line is drawn, periodt 📏
  • memory — the usable memory regions. the good stuff. the functional real estate 🌈
  • reserved — the reserved memory regions. hands off, bestie, this part is spoken for 🙈

🫶 SEE ALSO 🫶

it's in the kernel file ./include/linux/memblock.h — go read it, iykyk 💜

and then there's the whole friend group, no cap:

that's the entire group chat, all nineteen of them, nobody left on read 💀

lowkey a reminder: these are references, not vibes — go read the actual pages for the actual details, bestie. i'm just here to make it cute 🧚

alright that's the whole page, mwah 💋 — this came from ./include/linux, dated October 2026, and it's filed under struct memblock(9). slay, go manage some memory 🍓👑

📦 where this page comes from