pt_make_range(9)

💅 pt_make_range(9) 💅

okay bestie, welcome to the Kernel API Manual ✨ — this one's a lil function from the kernel's generic page-table world, and it's literally so simple you'll be done in like ten seconds. no cap. 🫶

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🌸 NAME 🌸

pt_make_range — returns a range that spans part of the table 🎀

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✨ SYNOPSIS ✨

struct pt_range pt_make_range (struct pt_common *common , pt_vaddr_t va
, pt_vaddr_t last_va );

like, that's the whole signature. cute, right? 🦋

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🧚 ARGUMENTS 🧚

• common — the table 💖 (yes, that table. the one you're working with.)
• va — the start address ⭐
• last_va — the last address 🌈

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👑 DESCRIPTION 👑

so here's the tea, and it's a short tea: the caller must validate the range with pt_check_range before using it. 🔥

that's it. that's the whole description. no extra lore, no secret second paragraph. and yeah — "must" means must, bestie. don't be out here using an unvalidated range and then acting surprised 😭 do the vibe check first, periodt.

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🎀 SEE ALSO 🎀

the kernel file ./drivers/iommu/generic_pt/pt_iter.h says hi, and it brought the whole friend group along 💅:

• pt_check_range(9)
• pt_index_to_va(9)
• pt_entry_fully_covered(9)
• pt_range_to_index(9)
• pt_range_to_end_index(9)
• pt_next_entry(9)
• for_each_pt_level_entry(9)
• pt_load_single_entry(9)
• pt_top_range(9)
• pt_all_range(9)
• pt_upper_range(9)
• pt_init(9)
• pt_init_top(9)
• pt_descend(9)
• pt_walk_range(9)
• pt_range_slice(9)
• pt_top_memsize_lg2(9)
• pt_compute_best_pgsize(9)
• PT_MAKE_LEVELS(9)

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ok and one last lil note for the girlies who read to the end 💜: this page lives in ./drivers/iommu/generic_pt, dated October 2026. iconic. obsessed. byeee 🦋🌸✨