STRUCT GUC_CTB(9)

💖 NAME 💖

okay bestie, welcome to struct guc_ctb(9) from the Kernel API Manual — and it's literally the page for the GuC command transport buffer (CTB). no cap, that's the whole name-and-purpose situation. periodt 🎀

✨ SYNOPSIS ✨

here's the exact struct, character for character — do not come for me if you retype it wrong, just copy it:

       struct guc_ctb {
           struct xe_bo *bo;
           struct iosys_map desc;
           struct iosys_map cmds;
           struct guc_ctb_info info;
        };

🫶 Members 🫶

okay so every member is doing its little job, and the group chat is thriving:

• bo — Xe BO for CTB. iconic.
• desc — dma buffer map for CTB descriptor. yes bestie, descriptor map.
• cmds — dma buffer map for CTB commands. commands map, slay.
• info — CTB info. short and sweet.

👀 SEE ALSO 👀

if you're going on a lore deep-dive, the Kernel file is ./drivers/gpu/drm/xe/xe_guc_ct_types.h, and the whole squad is struct guc_ctb_info(9), struct guc_ctb_snapshot(9), struct xe_guc_ct_snapshot(9), enum xe_guc_ct_state(9), and struct xe_guc_ct(9). iykyk 💅

byeee 🫶 — source/version: ./drivers/gpu/drm/xe · date: October 2026 · page: struct guc_ctb(9).