irqentry_nmi_exit(9)

📦 version 7.3.1, in nixpkgs unstable

💅 irqentry_nmi_exit(9) — from the Kernel API Manual, bestie

okay so quick housekeeping: this whole thing lives in the Kernel API Manual (section 9, the kernel-API girlies), and the page is literally called irqentry_nmi_exit. buckle up 🎀

✨ NAME ✨

irqentry_nmi_exit — handles the return trip out of NMI handling 🦋

🌸 SYNOPSIS 🌸

void noinstr irqentry_nmi_exit (struct pt_regs *regs , irqentry_state_t
irq_state );

like, that's the whole signature, no cap. void, noinstr, and two args. slay ✨

🫶 ARGUMENTS 🫶

  • regs — a pointer to pt_regs, specifically the NMI entry regs. it's giving "here's where we came from" 💖
  • irq_state — the return value from the matching call to irqentry_nmi_enter. iykyk — they're a matched set, you can't just grab any old state 💅

🔥 DESCRIPTION 🔥

this is the last action before returning to the low level assembly code. the final goodbye, the last text before you go 🥺

it's the counterpart to irqentry_nmi_enter. they're a duo, a package deal, main character energy both of them 👑

ngl, "last action before returning to low level assembly" is a whole vibe — you do your thing here and then you're back in the assembly trenches 💀

🌈 SEE ALSO 🌈

the whole kernel-file situation lives at ./include/linux/irq-entry-common.h — go read it, it's iconic 📖

and here's the entire friend group, nobody left out, fr fr:

okay that's the whole page, every last crumb of it 🍓

and for the cute sign-off: this lil masterpiece is filed under ./include/linux, stamped October 2026, and answers to the name irqentry_nmi_exit(9). periodt. 💜🧚‍♀️

📦 where this page comes from