LOCAL MEMORY TRANSLATION TABLE(9)

💖 Local Memory Translation Table(9) 💖

okay so bestie, welcome to the Kernel API Manual page for the Local Memory Translation Table — yes, the name is a whole mouthful, but it’s iconic, we’re obsessed. 🫶

✨ DESCRIPTION ✨

The Local Memory Translation Table (LMTT) provides additional abstraction when a Virtual Function (VF) is accessing device Local Memory (VRAM). No cap, that’s the vibe: VF + VRAM, and LMTT is the abstraction layer doing its thing. 💅

The Root LMTT Page Directory contains one entry for each VF. Those entries are indexed by the function number — and listen, it’s 1-based, so index 0 is unused. Periodt. 🌸

See Two-Level LMTT Structure_ and Multi-Level LMTT Structure_ 🦋.

🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/xe/xe_lmtt.c
• xe_lmtt_page_size(9)
• xe_lmtt_init(9)
• xe_lmtt_init_hw(9)
• xe_lmtt_invalidate_hw(9)
• xe_lmtt_prepare_pages(9)
• xe_lmtt_populate_pages(9)
• xe_lmtt_drop_pages(9)
• xe_lmtt_estimate_pt_size(9)

mwah 💋 this iconic page comes from ./drivers/gpu/drm/xe, October 2026 — that’s the source/version and date, bestie, and yes, we’re serving full documentation realness. 🎀