vmw_ttm_map_dma(9)

✨ vmw_ttm_map_dma ✨

okay so bestie, welcome to the Kernel API Manual 💖 — this one's a <highlight> kernel-side function, vmw_ttm_map_dma(9), and it's literally the vibe check that makes sure your TTM pages are visible to the device. no cap. let's get into it 🎀

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🦋 SYNOPSIS 🦋

int vmw_ttm_map_dma (struct vmw_ttm_tt *vmw_tt );

it returns an int, it takes one pointer, that's the whole personality 💅

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🌸 ARGUMENTS 🌸

• vmw_tt — pointer to a struct vmw_ttm_tt. that's it. she's a pointer to the struct, she's doing her thing, we love her 🫶

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👑 DESCRIPTION 👑

so here's the tea, bestie ☕ — this function picks the correct function for the job and then makes sure the TTM pages are visible to the device. iconic behaviour, honestly. it also allocates the storage for the device mappings, because the mappings need somewhere to live 🏠✨

and here's the little shortcut that's very main-character: if a mapping has already been performed — which you can tell because the storage pointer is non-NULL — the function just returns success and moves on. periodt. no redo, no drama 💅

ngl, "already mapped?" → "cool, we're good, success" is such a chill little early-out. ate and left no crumbs 🍓

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🔥 SEE ALSO 🔥

• the kernel file, fr fr: ./drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c 📂
• __vmw_piter_non_sg_next(9)
• vmw_piter_start(9)
• vmw_ttm_unmap_from_dma(9)
• vmw_ttm_map_for_dma(9)
• vmw_ttm_unmap_dma(9)
• vmw_bo_sg_table(9)
• vmw_move_notify(9)
• vmw_swap_notify(9)

go read them, iykyk 👀💜

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and that's the whole page, bestie 🌈💖 this little gem comes to you from ./drivers/gpu/drm/vmwgfx, dated October 2026, and it's filed under vmw_ttm_map_dma(9) — mwah, slay, go map those pages ✨🎀🦋