pt_max_oa_lg2(9)

💅 pt_max_oa_lg2(9) — Kernel API Manual 🎀

okay bestie, welcome to the pt_max_oa_lg2 page, part of the Kernel API Manual ✨ it's short, it's sweet, and it's lowkey kind of important, so let's get into it 🫶

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✨ NAME ✨

pt_max_oa_lg2 — return the maximum OA the table format can hold 👑

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🦋 SYNOPSIS 🦋

unsigned int pt_max_oa_lg2 (const struct pt_common *common );

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🌸 ARGUMENTS 🌸

• common — the page table you wanna query, bestie. that's it, that's the whole argument 🙈

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💖 DESCRIPTION 💖

okay so here's the tea ☕ — the value oalog2_to_max_int(pt_max_oa_lg2) is literally the MAX for the OA. not "a" max, the max. it's the absolute maximum address the table can hold, periodt 💅

but wait, there's a lil plot twist 🎀 struct pt_common max_oasz_lg2 sets a lower dynamic maximum based on HW capability. so like, this function is giving absolute-ceiling main character energy, while max_oasz_lg2 is the realistic one depending on what your hardware can actually do. both iconic, both matter ✨

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/iommu/generic_pt/pt_common.h 📁
• pt_attr_from_entry(9)
• pt_can_have_leaf(9)
• pt_can_have_table(9)
• pt_clear_entries(9)
• pt_entry_make_write_dirty(9)
• pt_entry_make_write_clean(9)
• pt_entry_is_write_dirty(9)
• pt_dirty_supported(9)
• pt_entry_num_contig_lg2(9)
• pt_entry_oa(9)
• pt_entry_oa_lg2sz(9)
• pt_entry_oa_exact(9)
• pt_full_va_prefix(9)
• pt_has_system_page_size(9)
• pt_install_leaf_entry(9)
• pt_install_table(9)
• pt_item_oa(9)
• pt_load_entry_raw(9)
• pt_num_items_lg2(9)
• pt_pgsz_lg2_to_level(9)
• pt_possible_sizes(9)
• pt_table_item_lg2sz(9)
• pt_table_oa_lg2sz(9)
• pt_table_pa(9)
• pt_table_ptr(9)
• pt_max_sw_bit(9)
• pt_test_sw_bit_acquire(9)
• pt_set_sw_bit_release(9)
• pt_load_entry(9)

like, go read the whole friend group, iykyk 💜

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and that's the page, bestie!! 🦋 this one lives in ./drivers/iommu/generic_pt, dated October 2026 — go off and query those page tables, no cap 🌈⭐💖