amdgpu_bo_get_metadata(9)

💅 amdgpu_bo_get_metadata(9) — get metadata

okay so bestie, welcome to the Kernel API Manual ✨ you're about to learn how to yoink a buffer object's metadata, and honestly? it's giving lowkey simple. let's go 🫶

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🌸 NAME 🌸

amdgpu_bo_get_metadata — the one where you get metadata 📦

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✨ SYNOPSIS ✨

int amdgpu_bo_get_metadata (struct amdgpu_bo *bo , void *buffer , size_t
buffer_size , uint32_t *metadata_size , uint64_t *flags );

like, five arguments, one int back. no cap, that's literally the whole vibe check 🔥

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🎀 ARGUMENTS 🎀

• bo — your amdgpu_bo buffer object bestie, the main character 💜
• buffer — where the returned metadata goes 🎁
• buffer_size — the size of the buffer, yes ma'am 📏
• metadata_size — the size of the returned metadata, so you know how much you actually got 🌸
• flags — the flags of the returned metadata 🚩

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🦋 DESCRIPTION 🦋

so the way that this works: it gets the buffer object's metadata, ✨ and ✨ its size, ✨ and ✨ its flags. all three. iconic.

🚨 important caveat bestie: buffer_size shall not be less than metadata_size. like, please don't. it's not a suggestion fr fr.

and where do you use it? via GEM ioctl 👑 iykyk.

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🌈 RETURN 🌈

returns 0 for success, or a negative error code on failure. simple as that, periodt 💅

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🌟 SEE ALSO 🌟

kernel file ./drivers/gpu/drm/amd/amdgpu/amdgpu_object.c 👀

and then, ok, deep breath, the whole friend group 🌸:

• amdgpu_object(9)
• amdgpu_bo_is_amdgpu_bo(9)
• amdgpu_bo_placement_from_domain(9)
• amdgpu_bo_create_reserved(9)
• amdgpu_bo_create_kernel(9)
• amdgpu_bo_create_isp_user(9)
• amdgpu_bo_create_kernel_at(9)
• amdgpu_bo_free_kernel(9)
• amdgpu_bo_free_isp_user(9)
• amdgpu_bo_create(9)
• amdgpu_bo_create_user(9)
• amdgpu_bo_create_vm(9)
• amdgpu_bo_kmap(9)
• amdgpu_bo_kptr(9)
• amdgpu_bo_kunmap(9)
• amdgpu_bo_ref(9)
• amdgpu_bo_unref(9)
• amdgpu_bo_pin(9)
• amdgpu_bo_unpin(9)
• amdgpu_bo_init(9)
• amdgpu_bo_fini(9)
• amdgpu_bo_set_tiling_flags(9)
• amdgpu_bo_get_tiling_flags(9)
• amdgpu_bo_set_metadata(9)
• amdgpu_bo_move_notify(9)
• amdgpu_bo_release_notify(9)
• amdgpu_bo_fault_reserve_notify(9)
• amdgpu_bo_fence(9)
• amdgpu_bo_sync_wait_resv(9)
• amdgpu_bo_sync_wait(9)
• amdgpu_bo_gpu_offset(9)
• amdgpu_bo_fb_aper_addr(9)
• amdgpu_bo_gpu_offset_no_check(9)
• amdgpu_bo_mem_stats_placement(9)
• amdgpu_bo_get_preferred_domain(9)
• amdgpu_bo_print_info(9)

like, that's the whole group chat. read them. they ate 💀🔥

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and that's the page, bestie! 🧚 this little gem lives in ./drivers/gpu/drm/amd/amdgpu, it's dated October 2026, and it's brought to you by the Kernel API Manual 💖 go get that metadata, you absolute icon 👑🎀