irqentry_exit_to_user_mode(9)

okay bestie, this is irqentry_exit_to_user_mode(9) straight out of the Kernel API Manual — the interrupt-exit-work page, and honestly it's giving small function, big responsibilities. 💅

💖 NAME 💖

irqentry_exit_to_user_mode — interrupt exit work. That's the whole vibe: it's the exit work on the interrupt side before you head back to user mode. 🦋

✨ SYNOPSIS ✨

void irqentry_exit_to_user_mode (struct pt_regs *regs );

🎀 ARGUMENTS 🎀

• regs — pointer to current's pt_regs. That's the regs you're handing over, bestie. 🫶

🌸 DESCRIPTION 🌸

Okay so you invoke this with interrupts disabled and with fully valid regs. When it returns, all the work is handled and interrupts are still disabled — yes, still — so the caller can immediately switch to user mode. ✨

It's called from architecture specific interrupt handling code. 🧚

The call order is #2 and #3 as described in syscall_exit_to_user_mode. Interrupt exit is not invoking #1, which is the syscall specific one time work. No cap. 💀

🔥 SEE ALSO 🔥

• 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)
• 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_enter(9)
• irqentry_nmi_exit(9)

Signed off from source ./include/linux, dated October 2026, and this little page is irqentry_exit_to_user_mode(9). Stay interrupt-disabled till it's handled, bestie 💖👑