MMU BACKING PAGES (CONSTANTS)(9)

💖 MMU backing pages (constants) 💖

okay bestie, this is from the Kernel API Manual, section (9), and it's the constants girlie of the MMU backing pages family. she's tiny, she's specific, and she absolutely matters. 🎀✨

🦋 the macro 🦋

.. c:macro:: PVR_MMU_BACKING_PAGE_SIZE

so PVR_MMU_BACKING_PAGE_SIZE is literally the page size of a PowerVR device's integrated MMU. no cap. 🫶

and here's the vibe check: for the current implementation, the CPU page size must be at least as large as this value. if it isn't, that's a no-go — and this is checked at compile-time. 😭✨

bestie, this is a compile-time check, not a runtime "oops" — the build catches it before anything gets weird. 💀

🌈 SEE ALSO 🌈

the whole linked-up squad is here, every single one, exactly as listed. iykyk, go browse the lore:

• Kernel file: ./drivers/gpu/drm/imagination/pvr_mmu.c
• pvr_mmu_set_flush_flags(9)
• pvr_mmu_flush_request_all(9)
• pvr_mmu_flush_exec(9)
• PowerVR Virtual Memory Handling(9)
• PowerVR Virtual Memory Handling (constants)(9)
• MMU backing pages(9)
• 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(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(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)
• struct pvr_mmu_context(9)
• struct pvr_page_table_ptr(9)
• struct pvr_mmu_op_context(9)
• 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(9)
• pvr_page_table_l2_idx(9)
• pvr_page_table_l1_idx(9)
• pvr_page_table_l0_idx(9)
• 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(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)

mwah 💋 this page is sourced from ./drivers/gpu/drm/imagination and dated October 2026. periodt. 👑