drm_gem_shmem_get_pages_sgt(9)

✨ drm_gem_shmem_get_pages_sgt — the kernel API manual, but make it make sense ✨

okay so bestie, welcome to drm_gem_shmem_get_pages_sgt(9) 🎀 — the one where we pin pages, dma map them, and hand you back a scatter/gather table for a shmem GEM object. yes that's a lot of words, stay with me 💖

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🌸 SYNOPSIS 🌸

struct sg_table * drm_gem_shmem_get_pages_sgt (struct
drm_gem_shmem_object *shmem );

like, literally that's the whole call. go off king 👑

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🦋 ARGUMENTS 🦋

• shmem — your shmem GEM object. that's it, that's the whole argument. she's low maintenance 💅

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💖 DESCRIPTION 💖

okay so here's the tea ☕ — this function returns a scatter/gather table suitable for driver usage. like a little gift, wrapped, ready to go 🎁

and if that sg table doesn't already exist? no worries bestie, it gets made: the pages are pinned, dma-mapped, and a sg table is created. brand new, fresh out the packaging ✨

this is the main function for drivers to get at backing storage, and it hides the difference between dma-buf imported and natively allocated objects. so you don't gotta check which one you're holding — she does it for you 🫶

🚨 and listen, bestie, important: drm_gem_shmem_get_sg_table should not be directly called by drivers. like do not. the audacity would be unmatched 😭 this function is the one you go through. periodt.

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🔥 RETURN 🔥

a pointer to the scatter/gather table of pinned pages — or an errno on failure 😭 so like, vibe check your return value, always 🌈

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⭐ SEE ALSO ⭐

go read these too, i'm obsessed with all of them tbh 👑

• Kernel file ./drivers/gpu/drm/drm_gem_shmem_helper.c
• overview(9)
• drm_gem_shmem_init(9)
• drm_gem_shmem_create(9)
• drm_gem_shmem_release(9)
• drm_gem_shmem_free(9)
• drm_gem_shmem_pin(9)
• drm_gem_shmem_unpin(9)
• drm_gem_shmem_create_with_handle(9)
• drm_gem_shmem_dumb_create(9)
• drm_gem_shmem_mmap(9)
• drm_gem_shmem_print_info(9)
• drm_gem_shmem_get_sg_table(9)
• drm_gem_shmem_prime_import_sg_table(9)
• drm_gem_shmem_prime_import_no_map(9)

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and that's a wrap bestie 🎀 this lil gem lives down in ./drivers/gpu/drm, dated October 2026 — go forth, pin those pages, slay 💅✨🦋💜