pte_batch_hint(9)

💅 pte_batch_hint(9) — like, the Kernel API Manual, bestie 💖

okay so picture this: you're deep in Kernel API Manual territory, section 9, and you meet this little cutie called pte_batch_hint. she's lowkey famous for telling you how many pages you can yeet into a batch without doing a whole scan. slay. let's get into it 🎀

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✨ NAME ✨

pte_batch_hint — literally the number of pages that can be added to a batch without scanning 🦋

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🌸 SYNOPSIS 🌸

unsigned int pte_batch_hint (pte_t *ptep , pte_t pte );

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🫶 ARGUMENTS 🫶

• ptep — the page table pointer for the entry. like, the address of the vibe in question 💅
• pte — the page table entry itself. the actual main character 🎀

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👑 DESCRIPTION 👑

okay so here's the tea ☕: some architectures know that a whole set of contiguous ptes all map the same contiguous memory with the same permissions. like they just know. and when they know, they can hand you a hint to help out pte batching — no cap — so the core code doesn't have to scan every single pte one by one. iconic behavior, honestly 💖

a couple of things though, bestie, don't skip these:

• an architecture implementation may ignore the PTE accessed state 🙈
• and the dirty state must apply atomically to all the PTEs described by the hint — yes, atomically, all of them, no half-sending 🫶

this function may be overridden by the architecture. but if nobody overrides it? pte_batch_hint is always 1 ⭐ periodt.

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💜 SEE ALSO 💜

kernel file ./include/linux/pgtable.h — go read her, she's iconic:

• lazy_mmu_mode_enable(9)
• 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)
• 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)

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and that's the whole page, bestie 🧚💖 this one lives in ./include/linux and it's dated October 2026 — you'll see pte_batch_hint(9) stamped on it too, so you know it's the real one. go forth and batch responsibly 💅✨🍓