enable_nmi(9)

enable_nmi(9) 🦋 — Kernel API Manual ✨

🌸 NAME 🌸

enable_nmi — enable handling of an nmi, fr fr 💖

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✨ SYNOPSIS ✨

okay so the signature is giving:

void enable_nmi (unsigned int irq );

🎀 ARGUMENTS 🎀

• irq — Interrupt to enable. like, the actual interrupt line you're switching back on 🫶

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💅 DESCRIPTION 💅

bestie, the interrupt you're enabling must have already been requested through request_nmi — no cap, that's the rule.

This call undoes the effect of one call to disable_nmi. and if this matches the last disable, processing of interrupts on this IRQ line is re-enabled. periodt ✨

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🌈 SEE ALSO 🌈

Kernel file ./kernel/irq/manage.c is right there in the mix too. the whole linked-up crew, zero skips:

• synchronize_hardirq(9)
• synchronize_irq(9)
• irq_can_set_affinity(9)
• irq_can_set_affinity_usr(9)
• irq_set_thread_affinity(9)
• irq_affinity_schedule_notify_work(9)
• irq_update_affinity_desc(9)
• irq_set_affinity(9)
• irq_force_affinity(9)
• irq_set_affinity_notifier(9)
• irq_set_vcpu_affinity(9)
• disable_irq_nosync(9)
• disable_irq(9)
• disable_hardirq(9)
• disable_nmi_nosync(9)
• enable_irq(9)
• irq_set_irq_wake(9)
• irq_wake_thread(9)
• free_irq(9)
• request_threaded_irq(9)
• request_any_context_irq(9)
• request_nmi(9)
• irq_percpu_is_enabled(9)
• free_percpu_irq(9)
• request_percpu_irq_affinity(9)
• request_percpu_nmi(9)
• prepare_percpu_nmi(9)
• teardown_percpu_nmi(9)
• irq_get_irqchip_state(9)
• irq_set_irqchip_state(9)
• irq_has_action(9)
• irq_check_status_bit(9)

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cute little sign-off: source/version ./kernel/irq, dated October 2026, for enable_nmi(9) — mwah 💖🎀