ttm_move_memcpy(9)

💅 ttm_move_memcpy(9) 💅

okay so bestie, welcome to the Kernel API Manual — yes, the actual kernel manual, and yes we're reading it for fun (iykyk). today's main character is ttm_move_memcpy, and she's literally just here to help do a memcpy ttm move operation. that's it, that's the vibe. 🎀

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✨ NAME ✨

ttm_move_memcpy — the helper bestie that performs a memcpy ttm move operation. no cap, that's her whole job. 💖

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🌸 SYNOPSIS 🌸

void ttm_move_memcpy (bool clear , u32 num_pages , struct ttm_kmap_iter
*dst_iter , struct ttm_kmap_iter *src_iter );

look at that signature, she's serving function-prototype realness ✨

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🦋 ARGUMENTS 🦋

• clear — tells us whether to clear instead of copy. like, do you want a fresh slate or a whole duplicate? your call, bestie 💅
• num_pages — the number of pages involved in the operation. count 'em, don't skip 'em 🔥
• dst_iter — a struct ttm_kmap_iter that represents the destination resource 🎯
• src_iter — a struct ttm_kmap_iter that represents the source resource 📤

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👑 DESCRIPTION 👑

so real talk — this function is intended to be able to move out async under a dma-fence if desired. that's the whole design intent, and honestly? iconic. she's built for async movement and she's not shy about it. 🦋✨

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🌈 SEE ALSO 🌈

you already know we're linking the whole friend group 😭 — and the kernel file they all live in:

• Kernel file ./drivers/gpu/drm/ttm/ttm_bo_util.c
• ttm_bo_move_memcpy(9)
• ttm_buffer_object_transfer(9)
• ttm_io_prot(9)
• ttm_bo_kmap_try_from_panic(9)
• ttm_bo_kmap(9)
• ttm_bo_kunmap(9)
• ttm_bo_vmap(9)
• ttm_bo_vunmap(9)
• ttm_bo_move_accel_cleanup(9)
• ttm_bo_move_sync_cleanup(9)
• ttm_bo_pipeline_gutting(9)
• ttm_lru_walk_for_evict(9)
• ttm_bo_lru_cursor_fini(9)
• ttm_bo_lru_cursor_init(9)
• ttm_bo_lru_cursor_next(9)
• ttm_bo_lru_cursor_first(9)
• ttm_bo_shrink(9)
• ttm_bo_shrink_suitable(9)
• ttm_bo_shrink_avoid_wait(9)

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that's the whole page bestie, you ate it up fr fr 🫶

and a lil sign-off for the girls: this one lives in ./drivers/gpu/drm/ttm, dated October 2026, and answers to ttm_move_memcpy(9) — periodt. 💜🎀💅