irqentry_nmi_enter(9)

💅 irqentry_nmi_enter(9) 💅

okay so bestie, welcome to the Kernel API Manual corner for irqentry_nmi_enter(9). This page is literally about handling NMI entry, and the vibe is extremely kernel-internal. no cap. 🫶

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🌸 NAME 🌸

irqentry_nmi_enter — Handle NMI entry.

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✨ SYNOPSIS ✨

the signature is giving low-level main character energy, and it is exactly this:

irqentry_state_t noinstr irqentry_nmi_enter (struct pt_regs *regs );

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🎀 ARGUMENTS 🎀

• regs — Pointer to currents pt_regs. That’s the argument, bestie: a pointer to currents pt_regs, and we are keeping that detail 100% intact. 💖

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🦋 DESCRIPTION 🦋

Similar to irqentry_enter but taking care of the NMI constraints. Like, same general lane as irqentry_enter, but this one is highkey taking care of the NMI constraints specifically. periodt. 🔥

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🌈 SEE ALSO 🌈

the whole friend group is here, and nobody got left out:

• Kernel file: ./include/linux/irq-entry-common.h
• arch_enter_from_user_mode(9)
• arch_in_rcu_eqs(9)
• enter_from_user_mode(9)
• arch_exit_to_user_mode_work(9)
• arch_exit_to_user_mode_prepare(9)
• arch_exit_to_user_mode(9)
• arch_do_signal_or_restart(9)
• __exit_to_user_mode_prepare(9)
• syscall_exit_to_user_mode_prepare(9)
• irqentry_exit_to_user_mode_prepare(9)
• exit_to_user_mode(9)
• irqentry_enter_from_user_mode(9)
• irqentry_exit_to_user_mode(9)
• struct irqentry_state(9)
• irqentry_enter_from_kernel_mode(9)
• irqentry_exit_to_kernel_mode_preempt(9)
• irqentry_exit_to_kernel_mode_after_preempt(9)
• irqentry_exit_to_kernel_mode(9)
• irqentry_enter(9)
• irqentry_exit(9)
• irqentry_nmi_exit(9)

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source/version: ./include/linux • date: October 2026 — kisses, sparkles, and a little irqentry_nmi_enter(9) bow on top 🎀💖