MMU BACKING PAGES(9)

🌸 MMU backing pages 🌸

okay so bestie, welcome to MMU backing pages, section 9 of the Kernel API Manual — kernel API energy, not your usual "how do I use grep" situation. 💅

This is the manual page for the MMU backing pages situation, and ngl it is very much a vibes-and-cross-references page: the entire thing is a SEE ALSO tree. It's giving "the group chat of kernel symbols", and honestly? Iconic. 🎀

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✨ SEE ALSO ✨

Everything here is section 9, and yes, every single one is listed, no cap. 🫶

📁 the actual source file

• Kernel file ./drivers/gpu/drm/imagination/pvr_mmu.c

🧹 flush flags & flushing

• pvr_mmu_set_flush_flags(9)
• pvr_mmu_flush_request_all(9)
• pvr_mmu_flush_exec(9)

🧚 the big-picture pages

• PowerVR Virtual Memory Handling(9)
• PowerVR Virtual Memory Handling (constants)(9)
• MMU backing pages (constants)(9)

🦋 backing pages themselves

• struct pvr_mmu_backing_page(9)
• pvr_mmu_backing_page_init(9)
• pvr_mmu_backing_page_fini(9)
• pvr_mmu_backing_page_sync(9)

🌈 raw page tables (the unglamorous ones)

• Raw page tables(9)
• struct pvr_page_table_l2_entry_raw(9)
• pvr_page_table_l2_entry_raw_set(9)
• struct pvr_page_table_l1_entry_raw(9)
• pvr_page_table_l1_entry_raw_set(9)
• struct pvr_page_table_l0_entry_raw(9)
• struct pvr_page_flags_raw(9)
• pvr_page_table_l0_entry_raw_set(9)
• pvr_page_flags_raw_create(9)
• struct pvr_page_table_l2_raw(9)
• struct pvr_page_table_l1_raw(9)
• struct pvr_page_table_l0_raw(9)

🪞 mirror page tables (now we're fancy)

• Mirror page tables(9)
• struct pvr_page_table_l2(9)
• pvr_page_table_l2_init(9)
• pvr_page_table_l2_fini(9)
• pvr_page_table_l2_sync(9)
• pvr_page_table_l2_get_raw(9)
• pvr_page_table_l2_get_entry_raw(9)
• pvr_page_table_l2_entry_is_valid(9)
• struct pvr_page_table_l1(9)
• pvr_page_table_l1_init(9)
• pvr_page_table_l1_free(9)
• pvr_page_table_l1_sync(9)
• pvr_page_table_l1_get_raw(9)
• pvr_page_table_l1_get_entry_raw(9)
• pvr_page_table_l1_entry_is_valid(9)
• struct pvr_page_table_l0(9)
• pvr_page_table_l0_init(9)
• pvr_page_table_l0_free(9)
• pvr_page_table_l0_sync(9)
• pvr_page_table_l0_get_raw(9)
• pvr_page_table_l0_get_entry_raw(9)
• pvr_page_table_l0_entry_is_valid(9)

🧠 contexts & table pointers

• struct pvr_mmu_context(9)
• struct pvr_page_table_ptr(9)
• struct pvr_mmu_op_context(9)

🔥 insert & remove (the main characters)

• pvr_page_table_l2_insert(9)
• pvr_page_table_l2_remove(9)
• pvr_page_table_l1_insert(9)
• pvr_page_table_l1_remove(9)
• pvr_page_table_l0_insert(9)
• pvr_page_table_l0_remove(9)

🔢 page table index utilities

• Page table index utilities(9)
• pvr_page_table_l2_idx(9)
• pvr_page_table_l1_idx(9)
• pvr_page_table_l0_idx(9)

👑 high-level page table operations

• High-level page table operations(9)
• pvr_page_table_l1_get_or_insert(9)
• pvr_page_table_l0_get_or_insert(9)
• pvr_mmu_context_create(9)
• pvr_mmu_context_destroy(9)
• pvr_mmu_get_root_table_dma_addr(9)
• pvr_page_table_l1_alloc(9)
• pvr_page_table_l0_alloc(9)
• pvr_mmu_op_context_require_sync(9)
• pvr_mmu_op_context_sync_manual(9)
• pvr_mmu_op_context_sync_partial(9)
• pvr_mmu_op_context_sync(9)
• pvr_mmu_op_context_load_tables(9)
• pvr_mmu_op_context_set_curr_page(9)
• pvr_mmu_op_context_next_page(9)

🍓 single page operations (the encore)

• Single page operations(9)
• pvr_page_create(9)
• pvr_page_destroy(9)
• pvr_mmu_op_context_destroy(9)
• pvr_mmu_op_context_create(9)
• pvr_mmu_op_context_unmap_curr_page(9)
• pvr_mmu_unmap(9)
• pvr_mmu_map_sgl(9)
• pvr_mmu_map(9)

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bestie this page is literally all links, so hit one and keep going — it's giving rabbit hole, and honestly? Same. 😭

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okay that's the whole page, mwah. 💖 this came from ./drivers/gpu/drm/imagination, dated October 2026, and it's serving MMU backing pages(9) realness — catch you in section 9, slay! 🌟