xe_lmtt_populate_pages(9)

💅 xe_lmtt_populate_pages(9) — like, the whole kernel API manual but make it make sense

okay bestie, welcome to another episode of "kernel devs wrote a manual page and we're gonna make it cute." This one is xe_lmtt_populate_pages(9) from the Kernel API Manual, and yes it's a function, yes it takes four args, and no we're not skipping any of them 💖

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✨ NAME ✨

xe_lmtt_populate_pages — literally just: update the VF's LMTT Page Table Entries. That's the whole vibe check 🎀

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🌸 SYNOPSIS 🌸

int xe_lmtt_populate_pages (struct xe_lmtt *lmtt , unsigned int vfid ,
struct xe_bo *bo , u64 offset );

she returns an int, she takes four things, that's her whole personality ✨

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🦋 ARGUMENTS 🦋

• lmtt — the struct xe_lmtt * we're gonna update. the main character, honestly 👑
• vfid — the VF identifier, and heads up it's 1-based so don't come at her with a 0 🙈
• bo — the buffer object with an LMEM allocation that's getting mapped. she's the backstore, she's booked and busy 💅
• offset — the offset where bo should be mapped. like, where she sits. assigned seating fr fr 🪑

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💜 DESCRIPTION 💜

so what does she actually do? This function updates the VF's LMTT entries so they use the given buffer object as a backstore. That's it, that's the flex. She's wiring up the translation table to point at your buffer object, and she does it with main character energy ✨

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🎀 NOTES 🎀

the one rule, bestie: this function shall be called only after a successful preparation of the VF's LMTT Page Tables. no shortcuts, no "close enough", no vibes-based timing 💀

See xe_lmtt_prepare for the prep step — do that first or you're gonna have a bad time 😭

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⭐ RETURN ⭐

0 on success, or a negative error code on failure. that's it. no in-between, no "it's complicated" 🌈

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🌊 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_invalidate_hw(9)
• xe_lmtt_prepare_pages(9)
• xe_lmtt_drop_pages(9)
• xe_lmtt_estimate_pt_size(9)

like, read the whole family, they're all iconic in their own way 🫶

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and that's the page!! sign-off time: this little beauty lives out of ./drivers/gpu/drm/xe, stamped October 2026, and she's officially xe_lmtt_populate_pages(9). iykyk 🧚💜 no cap, go map some pages 🍓