xe_lmtt_invalidate_hw(9)

✨ NAME ✨

okay so this page is xe_lmtt_invalidate_hw(9), and it’s living in the Kernel API Manual — very demure, very kernel-core 💅. The whole vibe is: invalidate LMTT hardware. That’s the function, bestie, and it’s giving “clean up your translation tables” energy ✨.

🛠️ SYNOPSIS 🛠️

void xe_lmtt_invalidate_hw (struct xe_lmtt *lmtt );

🎀 ARGUMENTS 🎀

• lmtt — the xe_lmtt to invalidate. That’s the one getting the invalidation treatment, no cap 💖.

🔥 DESCRIPTION 🔥

So basically, this function sends requests to all GuCs on this tile to invalidate all TLBs. Very “tell everyone in the group chat” behavior, honestly 📣.

If the platform has a standalone MERT, it also invalidates MERT’s TLB too. Not me being thorough — the function is being thorough 🦋.

⚠️ Important caveat, bestie: this function should be called only when running as a PF driver. That’s not a suggestion, that’s the rule 😭. Don’t be out here calling it in the wrong mode, fr fr.

🌈 SEE ALSO 🌈

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

okay bye bestie 💖 — this one comes from ./drivers/gpu/drm/xe, dated October 2026, and it’s the xe_lmtt_invalidate_hw(9) page from the Kernel API Manual. mwah 🫶✨