STRUCT SMEM_INFO(9)

💖 struct smem_info(9) 💖

okay so bestie, welcome to the Kernel API Manual — yes we're in the kernel docs now, and yes this one is a struct, and yes it's giving main character energy. this page is literally about struct smem_info, aka the smem region info that's located after the table of contents. that's the whole vibe. no cap.

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✨ NAME ✨

struct smem_info — the smem region info that lives right after the table of contents 🎀

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🌸 SYNOPSIS 🌸

ok so here's the shape of her, character for character, don't touch anything:

struct smem_info {
    u8 magic[4];
    __le32 size;
    __le32 base_addr;
    __le32 reserved;
    __le16 num_items;
 };

look at that little layout. iconique. the indentation on that closing brace is doing its own thing and we respect it 🫶

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🦋 Members 🦋

okay let's go through the squad one by one:

• magic — the magic number bestie, and it must be SMEM_INFO_MAGIC. no substitutions, this is the vibe check of the whole struct 💅
• size — the size of the smem region. that's it. that's the girl. 🌸
• base_addr — the base address of the smem region ✨
• reserved — for now, a reserved entry. it's just sitting there, minding its business, lowkey chilling 🙈
• num_items — the highest accepted item number 👑

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🔥 SEE ALSO 🔥

if you wanna keep reading (and you do, i know you do), the kernel file is ./drivers/soc/qcom/smem.c and it comes with a whole friend group:

• 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_header(9)
• struct smem_partition(9)
• struct smem_private_entry(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)

like, that is a full group chat. go say hi 🧚

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and that's the whole page, bestie! this little cutie lives over in ./drivers/soc/qcom, the version stamp says October 2026, and the manual is struct smem_info(9). slay, go read some kernel source, i'm obsessed with you 💜⭐