set_emergency_nmi_handler(9)

✨ NAME ✨

hiii bestie 🫶 welcome to the set_emergency_nmi_handler(9) page from the Kernel API Manual — manual name folded in near the top like a little name tag 🎀 and yes, this function is literally Set emergency handler.

• set_emergency_nmi_handler — Set emergency handler

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🌸 SYNOPSIS 🌸

void set_emergency_nmi_handler (unsigned int type , nmi_handler_t
       handler );

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🦋 ARGUMENTS 🦋

• type — NMI type. that's the type of the NMI, bestie 💅
• handler — the emergency handler to be stored. this is the handler that gets stashed ✨

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💅 DESCRIPTION 💅

okay so here's the tea ☕: this sets an emergency NMI handler which, if set, will preempt all the other handlers in the linked list — main character energy fr fr 👑.

if a NULL handler is passed in, it will clear it 🧼.

and the big warning, no cap: it is expected that concurrent calls to this function will not happen, or the system is screwed beyond repair 💀. like, that's not a vibe check you want to fail, bestie 😭.

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🔥 SEE ALSO 🔥

• Kernel file ./arch/x86/kernel/nmi.c

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okay that's the whole page, bestie 🫶💖 this iconic manual page came from the source/version ./arch/x86/kernel, dated October 2026, and it's the set_emergency_nmi_handler(9) page — slay and stay safe out there ✨🌈