spurious_interrupt(9)

💖 spurious_interrupt(9) 💖

okay so this is the Kernel API Manual page for spurious_interrupt, and bestie, it's short but iconic. Let's get into it 💅

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🌸 NAME 🌸

spurious_interrupt — Catch all for interrupts raised on unused vectors.

It's literally the catch-all bestie for interrupts raised on unused vectors, periodt.

✨ SYNOPSIS ✨

the whole signature, character for character, no cap:

static void spurious_interrupt (struct pt_regs *regs , u32 vector );

🎀 ARGUMENTS 🎀

two arguments, both important:

• regs — Pointer to pt_regs on stack.
• vector — The vector number.

🦋 DESCRIPTION 🦋

okay so here's the vibe: this function is invoked from ASM entry code to catch all interrupts which trigger on an entry which is routed to the common_spurious idtentry point. that's the tea ☕

💜 SEE ALSO 💜

Kernel file ./arch/x86/kernel/apic/apic.c is the source-file bestie, and the whole SEE ALSO squad is right here:

• lapic_get_maxlvt(9)
• clear_local_APIC(9)
• apic_soft_disable(9)
• disable_local_APIC(9)
• sync_Arb_IDs(9)
• setup_local_APIC(9)
• init_apic_mappings(9)
• connect_bsp_APIC(9)
• disconnect_bsp_APIC(9)
• apic_bsp_setup(9)

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💌 cute sign-off: source/version is ./arch/x86/kernel/apic, date is October 2026, and this is the spurious_interrupt(9) manual page. mwah, bye bestie 💋