SLPC SHARED DATA STRUCTURE(9)

✨ SLPC SHARED DATA STRUCTURE ✨

okay bestie, welcome to the SLPC shared data structure page 💖 it lives in the Kernel API Manual at section 9, and it is literally just the map of how this shared blob is laid out. it's a short page but every byte is accounted for, no cap.

the tables are built around three columns — CL, Bytes, and Description — so keep those in your head while we walk it 🎀

🦋 the layout, chunk by chunk

first block, and it's CL 1:

• CL 1
  • bytes 0-3 → SHARED DATA SIZE
  • bytes 4-7 → GLOBAL STATE
  • bytes 8-11 → DISPLAY DATA ADDRESS
  • bytes 12:63 → PADDING

next box up 👇

• 0:63 → PADDING(PLATFORM INFO)
• CL 3
  • bytes 0-3 → TASK STATE DATA
  • bytes 4:63 → PADDING

and then the big one, the main character of the page 👑

• CL 4-21
  • 0:1087 → OVERRIDE PARAMS AND BIT FIELDS
  • the same box also carries the label PADDING + EXTRA RESERVED PAGE

okay so real talk: those ranges are exactly what the page says — 0-3, 4-7, 8-11, 12:63, 0:63, 0-3, 4:63, 0:1087. don't go "fixing" the punctuation in your head, some are dashes and some are colons and that is on purpose 💀

🌈 SEE ALSO 🌈

• the kernel file ./drivers/gpu/drm/xe/abi/guc_actions_slpc_abi.h
• SLPC H2G MESSAGE FORMAT(9)
• SETUP_PC_GUCRC(9)

and that's the whole thing, bestie, short and slay 🫶 it comes to you from ./drivers/gpu/drm/xe/abi, dated October 2026, and it closes by literally repeating its own name — SLPC SHARED DATA STRUCTURE(9) — which is such main character energy honestly 👑💅