lazy_mmu_mode_enable(9)

💖 NAME 💖

lazy_mmu_mode_enable — Enable the lazy MMU mode.

This is the Kernel API Manual page for lazy_mmu_mode_enable(9), bestie. Yes, we're doing kernel internals today, and it's gonna be iconic. ✨

🌸 SYNOPSIS 🌸

void lazy_mmu_mode_enable (void );

🎀 ARGUMENTS 🎀

• void — no arguments. Literally zero. Nada. 🫶

💅 DESCRIPTION 💅

Okay so this function enters a new lazy MMU mode section. If the mode was not already enabled, it enables it and calls arch_enter_lazy_mmu_mode. Slay. 🔥

It must be paired with a call to lazy_mmu_mode_disable. No cap, that pairing is mandatory.

It has no effect if called:

• While paused — see lazy_mmu_mode_pause.
• In interrupt context.

So yeah, those two situations are a vibe check it does not pass. 💀

🦋 SEE ALSO 🦋

Kernel file ./include/linux/pgtable.h is where this lives, and here are all the related besties:

• lazy_mmu_mode_disable(9)
• __task_lazy_mmu_mode_pause(9)
• lazy_mmu_mode_pause(9)
• __task_lazy_mmu_mode_resume(9)
• lazy_mmu_mode_resume(9)
• pte_batch_hint(9)
• set_ptes(9)
• clear_young_dirty_ptes(9)
• get_and_clear_full_ptes(9)
• get_and_clear_ptes(9)
• clear_full_ptes(9)
• clear_ptes(9)
• clear_nonpresent_ptes(9)
• ptep_try_set(9)
• flush_tlb_before_set(9)
• wrprotect_ptes(9)
• clear_flush_young_ptes(9)
• test_and_clear_young_ptes(9)
• modify_prot_start_ptes(9)
• modify_prot_commit_ptes(9)
• pfnmap_setup_cachemode(9)
• pfnmap_track(9)
• pfnmap_untrack(9)
• pfnmap_setup_cachemode_pfn(9)

Source/version vibes: ./include/linux, October 2026. Page: lazy_mmu_mode_enable(9). That's the whole thing, bestie — go forth and pair your calls responsibly. 💜🦋