drm_gem_dma_mmap(9)

drm_gem_dma_mmap(9)

okay so bestie, welcome to the Kernel API Manual — this page is all about drm_gem_dma_mmap, the function that memory-maps an exported DMA GEM object and is honestly giving main-character immediacy 💅✨

🎀 NAME 🎀

drm_gem_dma_mmap — memory-map an exported DMA GEM object.

🌸 SYNOPSIS 🌸

int drm_gem_dma_mmap (struct drm_gem_dma_object *dma_obj , struct vm_area_struct *vma );

🦋 ARGUMENTS 🦋

• dma_obj — DMA GEM object.
• vma — VMA for the area to be mapped.

✨ DESCRIPTION ✨

This function maps a buffer into a userspace process's address space. In addition to the usual GEM VMA setup, it immediately faults in the entire object instead of using on-demand faulting — like, the whole thing, right now, no waiting for a fault to show up later 🔥

💖 RETURN 💖

Returns 0 on success or a negative error code on failure. That's the whole vibe check 😌

👑 SEE ALSO 👑

Kernel file ./drivers/gpu/drm/drm_gem_dma_helper.c — and the whole reference squad is:

• 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_vmap(9)
• drm_gem_dma_prime_import_sg_table_vmap(9)

okay bestie, that's a wrap — source ./drivers/gpu/drm, dated October 2026, for drm_gem_dma_mmap(9). mwah 💋🫶