kvmppc_gsb_send(9)

📦 version 7.3.1, in nixpkgs unstable

💖 kvmppc_gsb_send(9) 💖

okay so bestie, we're in the Kernel API Manual today and this one is a kernel function, not a command you type in a terminal — no cap. it lives in the powerpc KVM world and honestly? it slays at one very specific job. let's get into it 🎀

✨ NAME ✨

kvmppc_gsb_send — send all elements in the buffer to the hypervisor.

like, all of them. every single element. no leftovers, no crumbs. 🫶

🌸 SYNOPSIS 🌸

int kvmppc_gsb_send (struct kvmppc_gs_buff *gsb , unsigned long flags );

that's the whole signature, character for character, so pls don't come for me about the spacing 💅

🦋 ARGUMENTS 🦋

  • gsb — girl, this is the guest state buffer. it's the whole vibe of the call, the main character. 👑
  • flags — here's where you tell it the scope: guest wide or thread wide. choose wisely, it's giving "pick your lane". ⭐

🔥 DESCRIPTION 🔥

so what does it actually do? it performs the H_GUEST_SET_STATE hcall for the guest state buffer. that's it. that's the tweet. it takes your gsb and sends every element inside it up to the hypervisor via that hcall. 🧚

no extra steps, no secret sauce — the whole description is literally that one hcall, and honestly? iconic minimalism. 💜

🎀 SEE ALSO 🎀

the kernel file for all this lives at ./arch/powerpc/kvm/guest-state-buffer.c — go look, it's right there. 👀

and here's the entire friend group, not one of them left out, fr fr:

that's twenty-one functions plus the file, and yes i counted, because every single one of them ate. 💅✨

bye bestie!! this page came straight out of ./arch/powerpc/kvm, dated October 2026 — go read the whole thing again whenever you need a refresher, mwah 🫶💖

📦 where this page comes from