xe_pt_num_entries(9)

💅 xe_pt_num_entries(9) — like, the page-table entry counter bestie 💅

okay so real talk, this is one of those little gems from the Kernel API Manual and it does exactly one thing but it does it flawlessly. it's giving "humble utility function that the whole GPU driver depends on" energy, and honestly? iconic. 👑

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✨ NAME ✨

xe_pt_num_entries — the number of page-table entries for a given range, at whatever level you're on. that's it, that's the whole vibe. 🎀

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🌸 SYNOPSIS 🌸

pgoff_t xe_pt_num_entries (u64 addr , u64 end , unsigned int level ,
const struct xe_pt_walk *walk );

like, copy-paste it exactly, no cap, those spaces are load-bearing. 🙈

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💖 ARGUMENTS 💖

• addr — where the range starts. the beginning. the origin story. ⭐
• end — where the range ends. the finale. the closing credits. 🌈
• level — the page table level we're vibing at. yes, levels exist, we love hierarchy here. 🦋
• walk — the walk info. it's the little context bag that knows things. keep it close. 🫶

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🔥 RETURN 🔥

it returns the number of page table entries at this level between addr and end. that's the whole tea. no surprises, no plot twists, just math doing its thing. 💀✨

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🧚 SEE ALSO 🧚

okay bestie, here's the little friend group these functions roll with — check the kernel file ./drivers/gpu/drm/xe/xe_pt_walk.h for the full lore:

• struct xe_ptw(9)
• struct xe_pt_walk(9)
• xe_pt_entry_fn(9)
• struct xe_pt_walk_ops(9)
• xe_pt_covers(9)
• xe_pt_offset(9)

like, they're all connected, iykyk. the way that page table walking is a whole ecosystem?? obsessed. 💜

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lowkey reminder: this is all living in ./drivers/gpu/drm/xe, and the page is dated October 2026 — so yeah, future vibes only. 🕰️👑

anyway mwah, go count some entries, you're gonna slay it. 💅🍓🦋