amdgpu_vram...visible_size(9)

💖 amdgpu_vram...visible_size(9) — bestie edition 💖

okay so this is a page from the Kernel API Manual (yes, that's the manual name, we're in kernel-land now, hold my iced coffee 🧊) and it's all about one little function that answers a very specific question. let's get into it ✨

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🌸 NAME 🌸

amdgpu_vram_mgr_bo_visible_size — literally just tells you the CPU visible BO size, no cap 🫶

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✨ SYNOPSIS ✨

u64 amdgpu_vram_mgr_bo_visible_size (struct amdgpu_bo *bo );

that's it, that's the whole signature. it takes one amdgpu_bo pointer and hands you back a u64. slay 💅

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🦋 ARGUMENTS 🦋

• bo — an amdgpu_bo buffer object, and heads up: it must be in VRAM ⚠️ like, that's not a suggestion, that's a requirement, so vibe check your bo before you call this fr.

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🎀 RETURN 🎀

it returns how much of the given amdgpu_bo buffer object actually lies in CPU visible VRAM 💖 so like, not the whole bo necessarily — just the part the CPU can literally see. it's giving "how much of this is in the front row" energy 👑

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🔥 SEE ALSO 🔥

the kernel file where all the magic lives is ./drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c — go read it if you're that kind of girl (respect 🫡).

and here's the whole friend group, all of them, in order:

• mem_info_vram_total(9)
• mem_info_vis_vram_total(9)
• mem_info_vram_used(9)
• mem_info_vis_vram_used(9)
• mem_info_vram_vendor(9)
• amdgpu_vram_mgr_vis_size(9)
• amdgpu_vram_mgr_reserve_range(9)
• amdgpu_vram_mgr_query_page_status(9)
• amdgpu_vram_mgr_new(9)
• amdgpu_vram_mgr_del(9)
• amdgpu_vram_mgr_alloc_sgt(9)
• amdgpu_vram_mgr_free_sgt(9)
• amdgpu_vram_mgr_vis_usage(9)
• amdgpu_vram_mgr_clear_reset_blocks(9)
• amdgpu_vram_mgr_intersects(9)
• amdgpu_vram_mgr_compatible(9)
• amdgpu_vram_mgr_debug(9)
• amdgpu_vram_mgr_init(9)
• amdgpu_vram_mgr_fini(9)

no skips, we don't do that here 💜

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ok and for the sign-off: this one's from ./drivers/gpu/drm/amd/amdgpu (that's the source/version, iykyk) and it's dated October 2026 🌈 so yeah, future vibes. periodt. go read your VRAM stats bestie 💅✨🍓