xe_pt_entry_fn(9)

💅 xe_pt_entry_fn(9) — the kernel API manual, but make it cute 🎀

okay so bestie, quick vibe check: this is xe_pt_entry_fn, a gpu page-table-walk callback-function from the kernel API manual. yes the whole name is a mouthful, no we're not renaming it, periodt. ✨

🦋 SYNOPSIS 🦋

int xe_pt_entry_fn (struct xe_ptw *parent , pgoff_t offset , unsigned
int level , u64 addr , u64 next , struct xe_ptw **child , enum
page_walk_action *action , struct xe_pt_walk *walk );

like, literally that's the whole signature. she's long, she's iconic, she ate. 💅

🌸 ARGUMENTS 🌸

• parent — The parent page table. the main character of this whole situation tbh. 👑
• offset — The offset (number of entries) into the page table. yes, number of entries, not bytes — read the label bestie. 📏
• level — The level of parent. she's got layers, okay. 🧚
• addr — The virtual address. 🌈
• next — The virtual address for the next call, or end address. iykyk. ⭐
• child — Pointer to pointer to child page-table at this offset. The function may modify the value pointed to if, for example, allocating a child page table. (double pointer energy fr fr, she can change what's underneath. 🫶)
• action — The walk action to take upon return. See <linux/pagewalk.h>. 🔥
• walk — The walk parameters. the whole itinerary, basically. 🎀

ngl, action and walk are the ones you actually wanna go read up on — action points you at <linux/pagewalk.h>, and walk is carrying all the parameters. don't skip her. 🙈

👀 SEE ALSO 👑

• Kernel file ./drivers/gpu/drm/xe/xe_pt_walk.h
• struct xe_ptw(9)
• struct xe_pt_walk(9)
• struct xe_pt_walk_ops(9)
• xe_pt_covers(9)
• xe_pt_num_entries(9)
• xe_pt_offset(9)

like go click around, it's giving lore deep-dive. 💀✨

and that's the page, bestie! 🌸 this one shipped out of ./drivers/gpu/drm/xe back in October 2026, and the manual labels it xe_pt_entry_fn(9) — same name up top, same name at the bottom, consistency queen 👑💖 🦋