pt_entry_make_write_dirty(9)

💖 pt_entry_make_write_dirty — a kernel API manual, but make it cute ✨

okay so bestie, we're in the <purple>Kernel API Manual</purple> today and the star of the show is pt_entry_make_write_dirty(9). yes the name is a mouthful, no we're not changing it, it's iconic 💅

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🌸 NAME 🌸

pt_entry_make_write_dirty — Make an entry dirty 🫶

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✨ SYNOPSIS ✨

bool pt_entry_make_write_dirty (struct pt_state *pts );

that's it. that's the whole signature. one argument, returns a bool, lowkey elegant ngl 😌

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🎀 ARGUMENTS 🎀

• pts — the table entry you want to change, like the actual one you're dirtying up 💅

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🦋 DESCRIPTION 🦋

okay so the whole vibe here: this function makes pt_entry_is_write_dirty return true for this entry. that's the entire mission. no cap 🧚

and the important part, bestie — this can be called asynchronously with any other table manipulation, all under a RCU lock. so like, multiple things are touching the table at once and yours is one of them 🙈

💀 and it must not corrupt the table. that's a hard requirement, not a suggestion, fr fr. no pressure or anything 😭

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🔥 SEE ALSO 🔥

the kernel file lives at ./drivers/iommu/generic_pt/pt_common.h — go say hi 🫶

and here's the whole friend group, in the order the manual gives them:

• pt_attr_from_entry(9)
• pt_can_have_leaf(9)
• pt_can_have_table(9)
• pt_clear_entries(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_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)

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🌈 and that's the page!! this whole thing ships from ./drivers/iommu/generic_pt, dated October 2026, and it's pt_entry_make_write_dirty(9) all the way down. slay, go dirty some entries responsibly 👑💜