pt_entry_oa_lg2sz(9)

okay bestie, welcome to the pt_entry_oa_lg2sz(9) page from the Kernel API Manual — this one is short, iconic, and here to answer one tiny-but-important question: how big is this OA entry? 💅✨

💖 NAME 💖

pt_entry_oa_lg2sz — returns the size of an OA entry. That’s the whole assignment, and it ate. 🫶

🌸 SYNOPSIS 🌸

unsigned int pt_entry_oa_lg2sz (const struct pt_state *pts );

🎀 ARGUMENTS 🎀

• pts — the entry you’re querying, bestie. You pass it in so the function can spill the tea. 🍓

🦋 DESCRIPTION 🦋

So here’s the vibe check: if the entry is not contiguous, this returns pt_table_item_lg2sz. No cap. But if it is contiguous, it returns the total VA/OA size of the entire contiguous entry. That’s the whole plot, and it understood the assignment 👑.

💜 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_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_max_oa_lg2(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)

xoxo, bestie 💋 source/version: ./drivers/iommu/generic_pt · date: October 2026 · this page is serving Kernel API Manual energy, periodt.