xe_gsc_emit_header(9)

🎀 xe_gsc_emit_header 🎀

okay so bestie, this is the Kernel API Manual page for xe_gsc_emit_header, section 9 — the (9) is part of the name, no cap 💅.

🌸 NAME 🌸

xe_gsc_emit_header — write the MTL GSC header in memory. That's the whole vibe: it writes the MTL GSC header in memory, and honestly? iconic 🫶.

✨ SYNOPSIS ✨

u32 xe_gsc_emit_header (struct xe_device *xe , struct iosys_map *map ,
u32 offset , u8 heci_client_id , u64 host_session_id , u32 payload_size
);

🦋 ARGUMENTS 🦋

• xe — the Xe device 👑
• map — the iosys map to write to 🎀
• offset — offset from the start of the map at which to write the header 🌸
• heci_client_id — client id identifying the type of command (see abi for values) 💅
• host_session_id — host session ID of the caller 🫶
• payload_size — size of the payload that follows the header ✨

🔥 RETURN 🔥

the return value is the offset memory location following the header — yes bestie, it hands you back where the header ends, periodt 💖.

🌈 SEE ALSO 🌈

peep the Kernel file ./drivers/gpu/drm/xe/xe_gsc_submit.c, plus these absolute icons:

• xe_gsc_create_host_session_id(9)
• xe_gsc_poison_header(9)
• xe_gsc_check_and_update_pending(9)
• xe_gsc_read_out_header(9)
• xe_gsc_pkt_submit_kernel(9)

mwah 💖 this page's source/version is ./drivers/gpu/drm/xe, and the date stamp is October 2026 — go off, bestie 🫶✨