STRUCT SMEM_PARTITION_HEADER(9)

💖 struct smem_partition_header(9) 💖

okay so this is from the Kernel API Manual bestie, and it's literally the glow-up guide to struct smem_partition_header — the header of the partitions ✨

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🌸 NAME 🌸

struct smem_partition_header — header of the partitions. that's it, that's the whole vibe 🎀

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🦋 SYNOPSIS 🦋

struct smem_partition_header {
    u8 magic[4];
    __le16 host0;
    __le16 host1;
    __le32 size;
    __le32 offset_free_uncached;
    __le32 offset_free_cached;
    __le32 reserved[3];
 };

no cap, that's the whole struct. look at her. she's iconic 👑

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👑 Members 👑

• magic — the magic number, and it must be SMEM_PART_MAGIC. like, not optional. it's giving "the bouncer at the club checking your ID" fr fr 💅
• host0 — the first processor/host that has access to this partition 🫶
• host1 — the second processor/host that gets access to this partition. so it's a two-besties situation, iykyk 💜
• size — the size of the partition. that's the size. of the partition. periodt ✨
• offset_free_uncached — the offset to the first free byte of uncached memory in this partition. so this is where the uncached memory's free space starts 🧚
• offset_free_cached — the offset to the first free byte of cached memory in this partition. same energy but cached this time, we love a matching set 🍓
• reserved — reserved entries, for now. just sitting there. main character energy but no lines yet 😭

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🌈 SEE ALSO 🌈

Kernel file ./drivers/soc/qcom/smem.c — go read it bestie, it's all in there 📖

and the whole friend group of related pages:

• struct smem_proc_comm(9)
• struct smem_global_entry(9)
• struct smem_header(9)
• struct smem_ptable_entry(9)
• struct smem_ptable(9)
• struct smem_partition(9)
• struct smem_private_entry(9)
• struct smem_info(9)
• struct smem_region(9)
• struct qcom_smem(9)
• qcom_smem_bust_hwspin_lock_by_host(9)
• qcom_smem_is_available(9)
• qcom_smem_alloc(9)
• qcom_smem_get(9)
• qcom_smem_get_free_space(9)
• qcom_smem_virt_to_phys(9)
• qcom_smem_get_soc_id(9)
• qcom_smem_get_feature_code(9)

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ok that's the whole page, no skips, no cuts 💀 every single member accounted for and every single SEE ALSO link present and correct. you're welcome 🫶

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that's a wrap! this lil page lives under ./drivers/soc/qcom, dated October 2026, and it's struct smem_...ition_header(9) — mwah, slay, bye bestie 💅✨🎀