drm_gem_dma_vmap(9)

💅 NAME 💅

okay so bestie, this is the Kernel API Manual page for drm_gem_dma_vmap(9), and it’s literally here to map a DMA GEM object into the kernel’s virtual address space. iconic. 💖

✨ SYNOPSIS ✨

int drm_gem_dma_vmap (struct drm_gem_dma_object *dma_obj , struct
       iosys_map *map );

🌸 ARGUMENTS 🌸

• dma_obj — the DMA GEM object. like, the actual object you’re dealing with. 💅
• map — Returns the kernel virtual address of the DMA GEM object’s backing store. yes, that’s the whole point. ✨

🦋 DESCRIPTION 🦋

okay so this function maps a buffer into the kernel’s virtual address space. and since the DMA buffers are already mapped into the kernel virtual address space, it simply returns the cached virtual address. no cap, that’s the vibe. 🫶

⭐ RETURN ⭐

0 on success, or a negative error code otherwise. slay when it’s 0, sad trombone when it’s negative. 😭

🔥 SEE ALSO 🔥

okay bestie, here’s the whole squad:

• Kernel file ./drivers/gpu/drm/drm_gem_dma_helper.c — dma helpers(9)
• __drm_gem_dma_create(9)
• drm_gem_dma_create(9)
• drm_gem_dma_create_with_handle(9)
• drm_gem_dma_free(9)
• drm_gem_dma_dumb_create_internal(9)
• drm_gem_dma_dumb_create(9)
• drm_gem_dma_get_unmapped_area(9)
• drm_gem_dma_print_info(9)
• drm_gem_dma_get_sg_table(9)
• drm_gem_dma_prime_import_sg_table(9)
• drm_gem_dma_mmap(9)
• drm_gem_dma_prime_import_sg_table_vmap(9)

that’s the page, bestie! 💖 this one is sourced from ./drivers/gpu/drm and stamped October 2026 — manual name: drm_gem_dma_vmap(9). mwah 💋