vmballoon_send_guest_id(9)

📦 version 7.3.1, in nixpkgs unstable

💖 vmballoon_send_guest_id(9) 💖

ok so real talk — this is a page straight out of the Kernel API Manual, and bestie, it's a tiny one but it matters. It's giving "small function, big responsibilities" energy fr fr. Let's get into it 🎀

✨ NAME ✨

vmballoon_send_guest_id — the function that literally tells the host what kind of guest you are 🌸

✨ SYNOPSIS ✨

int vmballoon_send_guest_id (struct vmballoon *b );

like yes that's the whole signature, no cap, it's a one-liner and it ate 💅

✨ ARGUMENTS ✨

  • b — a pointer to the balloon. that's it. that's the argument. your whole balloon, handed over 🎈

✨ DESCRIPTION ✨

okay so here's the vibe: you call this and you're communicating your guest type to the host. why? because the host is nosy in a helpful way — it wants to know what kind of guest you are so it can adjust its ballooning algorithm to the one that's most appropriate for the guest 👑 like, it's customizing the whole experience for you. main character treatment honestly.

and the tea ☕ — this command is normally issued after sending the "start" command, and it's part of the standard reset sequence. so it's not a random little drive-by call, it's a scheduled stop on the reset tour. iykyk 🦋

✨ RETURN ✨

  • zero on success 🎉
  • or the appropriate error code if things went sideways 😭 (dramatic but accurate)
lowkey important: it returns int, so please actually check it. don't just call it into the void and hope. 🙈

✨ SEE ALSO ✨

bestie, buckle in, because this list is LONG and honestly kind of iconic. these all live in the kernel file ./drivers/misc/vmw_balloon.c 🌈

and that's the whole page, bestie!! 🫶 this lil masterpiece comes to you from ./drivers/misc, dated October 2026, under the Kernel API Manual banner — so go forth, send that guest id, and slay ✨💜

📦 where this page comes from