STRUCT HL_P2P_REGION(9)

✨ struct hl_p2p_region(9) — Kernel API Manual ✨

okay bestie, welcome to the Kernel API Manual moment for struct hl_p2p_region(9) 💅 this one is literally a struct that describes a single P2P memory region, and we’re doing a full field-by-field roll call like it’s the group chat 🫶 no cap.

🌸 NAME 🌸

struct hl_p2p_region — describes a single P2P memory region 💖

🎀 SYNOPSIS 🎀

struct hl_p2p_region {
    struct page **p2ppages;
    void *p2pmem;
    u64 device_pa;
    u64 bar_offset;
    u64 size;
    int bar;
 };

🧚 Members 🧚

these are the members, bestie — every single one is iconic in its own way ✨

• p2ppages — array of page structs for the P2P memory 🦋
• p2pmem — virtual address of the P2P memory region 💜
• device_pa — physical address on the device 🔥
• bar_offset — offset within the BAR 🎀
• size — size of the region in bytes ⭐
• bar — BAR number containing this region 👑

🦋 SEE ALSO 🦋

• Kernel file ./drivers/accel/habanalabs/common/hldio.h — struct hl_dio_stats(9), struct hl_dio(9) 🌈

xoxo, your Unix bestie 💅 — source/version: ./drivers/accel/habanalabs/common; date: October 2026; page: struct hl_p2p_region(9) 🎀✨