amdgpu_vm_pt_descendant(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 NAME 🌸

Okay bestie, welcome to the amdgpu_vm_pt_descendant(9) page from the Kernel API Manual — the function whose whole personality is go to child node. That’s it, that’s the assignment. No cap. 💅

✨ SYNOPSIS ✨

bool amdgpu_vm_pt_descendant (struct amdgpu_device *adev , struct
       amdgpu_vm_pt_cursor *cursor );

It’s giving bool, it’s giving two arguments, it’s giving “let me walk to the child node real quick.” 🦋

🎀 ARGUMENTS 🎀

  • adev — an amdgpu_device pointer. Yep, the device pointer, your main-character device situation. 🔥
  • cursor — the current state. This is the “you are here” marker for the walk, bestie. 📍

💫 DESCRIPTION 💫

Walk to the child node of the current node.

That’s the whole plot. You’ve got a current node, you’ve got a child node, and this function does the little walk from one to the other. The cursor is holding the current state while that happens. Periodt. ✨

👑 RETURN 👑

Returns true if the walk was possible, and false otherwise. So like: possible = true, not possible = false. No maybe, no “it’s complicated,” no vibes-based ambiguity. 😌

🫶 SEE ALSO 🫶

Kernel file: ./drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c — go peek, it’s right there.

Also in the group chat, in this exact order: amdgpu_vm_pt_level_shift(9), amdgpu_vm_pt_num_entries(9), amdgpu_vm_pt_entries_mask(9), amdgpu_vm_pt_size(9), amdgpu_vm_pt_parent(9), amdgpu_vm_pt_start(9), amdgpu_vm_pt_sibling(9), amdgpu_vm_pt_ancestor(9), amdgpu_vm_pt_next(9), amdgpu_vm_pt_first_dfs(9), amdgpu_vm_pt_continue_dfs(9), amdgpu_vm_pt_next_dfs(9), amdgpu_vm_pt_clear(9), amdgpu_vm_pt_create(9), amdgpu_vm_pt_alloc(9), amdgpu_vm_pt_free(9), amdgpu_vm_pt_free_list(9), amdgpu_vm_pt_add_list(9), amdgpu_vm_pt_free_root(9), amdgpu_vm_pde_update(9), amdgpu_vm_pte_update_noretry_flags(9), amdgpu_vm_pte_fragment(9), amdgpu_vm_ptes_update(9), amdgpu_vm_pt_map_tables(9).

Signed with sparkles by the Kernel API Manual 💖 source path ./drivers/gpu/drm/amd/amdgpu, dated October 2026, page amdgpu_vm_pt_descendant(9) — mwah! 🎀

📦 where this page comes from