drm_gem_ttm_dumb_map_offset(9)

💅 drm_gem_ttm_dumb_map_offset(9) ✨

okay so bestie, welcome to the Kernel API Manual — yes, the kernel has manuals, and yes, this one is about exactly one function 💖 buckle up, it's a short one and we're gonna slay it.

🎀 NAME 🎀

drm_gem_ttm_dumb_map_offset — literally implements struct &drm_driver.dumb_map_offset. that's the whole job. iconic behavior, honestly.

🦋 SYNOPSIS 🦋

int drm_gem_ttm_dumb_map_offset (struct drm_file *file , struct drm_device *dev , uint32_t handle , uint64_t *offset );

🌸 ARGUMENTS 🌸

• file — the DRM file pointer. the vibe check entry point 🫶
• dev — the DRM device. main character energy, fr.
• handle — a GEM handle. like a little ticket stub for your buffer 🎫
• offset — on success, this is where the mapping's memory offset gets handed back to you ⭐

🔥 DESCRIPTION 🔥

so this function provides an implementation of struct drm_driver.dumb_map_offset for TTM-based GEM drivers. that's the flex. 💪

here's the tea: TTM allocates the offset internally, all on its own, no notes — and drm_gem_ttm_dumb_map_offset returns that offset for dumb-buffer implementations. it's giving "middle manager who actually does the work" 😭

also, see struct drm_driver.dumb_map_offset. go look at it, iykyk. 👑

⭐ RETURN ⭐

0 on success, or a negative errno code otherwise. no cap, that's it. 🍓

👀 SEE ALSO 👀

• Kernel file ./drivers/gpu/drm/drm_gem_ttm_helper.c
• overview(9)
• drm_gem_ttm_print_info(9)
• drm_gem_ttm_vmap(9)
• drm_gem_ttm_vunmap(9)
• drm_gem_ttm_mmap(9)

and that's the page, bestie 🧚💜 it lives over in ./drivers/gpu/drm, dated October 2026, and it's called drm_gem_ttm_dumb_map_offset(9) — periodt. 💅🌈