XE TLB INVALIDATION(9)

💅 Xe TLB invalidation 💅

okay bestie, welcome to the Kernel API Manual entry for Xe TLB invalidation — yes it's a whole thing and yes it's lowkey iconic 🌸

So the way this works is, Xe TLB invalidation is implemented in two layers. Two! Because one layer was simply not serving 💅

🎀 the two layers, bestie

• the frontend API — this is the glow-up interface that hands TLB invalidations over to the driver code. The frontend is out here doing the most: it handles seqno assignment, synchronization (that's the fences, iykyk 🧚), and the timeout mechanism. Fr fr, the frontend is implemented via an embedded structure xe_tlb_inval that includes a set of ops hooking into the backend. Main character energy, honestly.
• the backend — this one's the introvert: it interacts with the hardware (or firmware, depending 🌈) to perform the actual invalidation. No cap, it just does the thing.

✨ SEE ALSO ✨

• Kernel file ./drivers/gpu/drm/xe/xe_tlb_inval.c — the source, the moment, the vibe check 👑
• tlb_inval_fini(9)
• xe_gt_tlb_inval_init_early(9)
• xe_tlb_inval_reset(9)
• xe_tlb_inval_reset_timeout(9)
• xe_tlb_inval_all(9)
• xe_tlb_inval_ggtt(9)
• xe_tlb_inval_range(9)
• xe_tlb_inval_vm(9)
• xe_tlb_inval_done_handler(9)
• xe_tlb_inval_fence_init(9)
• xe_tlb_inval_idle(9)
• xe_tlb_inval_batch_wait(9)
• xe_tlb_inval_range_tilemask_submit(9)

so yeah, that's the whole page 🦋 go read all of those, they're literally all linked and everything. mwah 💖

okay and for the cute sign-off: this lil page lives at ./drivers/gpu/drm/xe, it's dated October 2026, and it's Xe TLB invalidation(9) — slay, bye 🎀✨