__exit_to_user_mode_prepare(9)

📦 version 7.3.1, in nixpkgs unstable

💅 __exit_to_user_mode_prepare(9) — Kernel API Manual ✨

okay so bestie, welcome to the Kernel API Manual, this one's the __exit_to_user_mode_prepare(9) page and it's lowkey one of those "pls don't touch this yourself" situations, iykyk 🫶

✨ NAME ✨

__exit_to_user_mode_prepare — call exit_to_user_mode_loop() if required 🎀

🌸 SYNOPSIS 🌸

void __exit_to_user_mode_prepare (struct pt_regs *regs , const unsigned
long work_mask );

like, that's the whole signature, no cap 💅

🦋 ARGUMENTS 🦋

  • regs — pointer to pt_regs on entry stack. yes the actual registers, iconic 👑
  • work_mask — which TIF bits need to be evaluated. which ones? the mask tells you, we're not guessing here 🔥

💖 DESCRIPTION 💖

bestie, it's a four-step little routine, and honestly the discipline? immaculate. here's the order, fr fr:

  1. check that interrupts are disabled ⭐
  2. call tick_nohz_user_enter_prepare 🎀
  3. call exit_to_user_mode_loop if any flags from EXIT_TO_USER_MODE_WORK are set 🌈
  4. check that interrupts are still disabled again, because we stay paranoid 💀
okay listen — don't invoke directly, use the syscall/irqentry_ prefixed variants below. literally the whole point. the variants are the main characters here, this one's the backstage crew 🙈

🔥 SEE ALSO 🔥

Kernel file ./include/linux/irq-entry-common.h — go read it, it's giving source of truth 📖

and the whole friend group, all of them, in order, mwah 🫶

and that's the page!! 🧚 from ./include/linux, dated October 2026, __exit_to_user_mode_prepare(9) — stay safe, don't call it directly, love u, bye 💜🍓

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