xe_lmtt_init_hw(9)

💖 xe_lmtt_init_hw(9) 💖

okay bestie, quick vibe check: this page lives in the Kernel API Manual, and today’s main character is xe_lmtt_init_hw. no cap, it’s giving “second step of LMTT init” energy and we’re gonna go through it together 💅

🌸 NAME 🌸

xe_lmtt_init_hw — perform LMTT hardware initialization. periodt.

✨ SYNOPSIS ✨

void xe_lmtt_init_hw (struct xe_lmtt *lmtt );

🎀 ARGUMENTS 🎀

• lmtt — the xe_lmtt you’re initializing, bestie. that’s the one.

🦋 DESCRIPTION 🦋

so this function is literally the second step of the LMTT initialization. it’s not the opening act, it’s the second-step slay ✨

what it does is register the LMTT Root Directory that was prepared in xe_lmtt_init. iykyk — xe_lmtt_init does the prep, and xe_lmtt_init_hw comes through to register it.

this function shall be called after every hardware reset. like, every single one. not a “whenever you feel like it” situation, fr fr.

this function shall be called only when running as a PF driver. that’s the rule, bestie — if you’re not in PF driver mode, this is not your moment.

🌈 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_invalidate_hw(9)
• xe_lmtt_prepare_pages(9)
• xe_lmtt_populate_pages(9)
• xe_lmtt_drop_pages(9)
• xe_lmtt_estimate_pt_size(9)

and that’s the whole page, bestie 🫶 cute little sign-off time: the footer’s source/version spot says ./drivers/gpu/drm/xe, and the date is October 2026 — iconic metadata behavior, no notes 💖✨