pvr_mmu_backing_page_sync(9)

💖 pvr_mmu_backing_page_sync — a whole manual page, bestie 💖

okay so this is pvr_mmu_backing_page_sync(9) from the Kernel API Manual, and we're gonna get into it ✨

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🌸 NAME 🌸

pvr_mmu_backing_page_sync — flushes a MMU backing page from the CPU over to the device 🫶

like. it's the handoff. cpu's done yapping, device gets the memo. periodt.

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🦋 SYNOPSIS 🦋

void pvr_mmu_backing_page_sync (struct pvr_mmu_backing_page *page , u32
flags );

yeah it's a void, it returns literally nothing, don't @ me about a return value there isn't one 💅

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🎀 ARGUMENTS 🎀

• page — the target backing page. the one. the main character of this function call 👑
• flags — MMU flush flags. has to be one of PVR_MMU_SYNC_LEVEL_*_FLAGS — like, must, no cap, pick from that set 🙈

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⭐ DESCRIPTION ⭐

⚠️ CAUTION: ⚠️

This is potentially an expensive function call. 💀

so like. read that again. expensive. we're not just vibing here, this costs.

Only call pvr_mmu_backing_page_sync once you're sure you have no more changes to make to the backing page in the immediate future. fr fr — do all your edits first, then sync, then go touch grass. calling it early and then changing stuff after? not the move, bestie 😭

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🌈 SEE ALSO 🌈

the lore is deep, so buckle up 🧚

• 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), MMU backing pages (constants)(9)
• struct pvr_mmu_backing_page(9), pvr_mmu_backing_page_init(9), pvr_mmu_backing_page_fini(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)

iykyk, that's a lot of cross-references and every single one of them is staying 💜

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mwah, that's the page 💅 this lil guy lives under ./drivers/gpu/drm/imagination and the docs are dated October 2026 — so yeah, future-dated slay, go read the source and stay hydrated 🍓✨