STRUCT LUO_SER(9)

💖 struct luo_ser(9) 💖

okay bestie, so this is a page from the Kernel API Manual and it's literally about struct luo_ser — the centralized LUO ABI header. yes, that one. sit down, hydrate, and let's get into it 🫶

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✨ NAME ✨

struct luo_ser — the centralized LUO ABI header. that's it, that's the whole name section, she's brief and she's iconic 💅

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🌸 SYNOPSIS 🌸

here's the whole struct, copied exactly, no cap:

struct luo_ser {
    char compatible[LUO_ABI_COMPAT_LEN];
    u64 liveupdate_num;
    u64 sessions_pa;
    u64 flbs_pa;
 };

like, four members, all of them serving a purpose. love that for us 🎀

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🦋 Members 🦋

• compatible — a compatibility string that identifies which LUO ABI version we're dealing with. it's giving "hello, my name is" but for ABI versioning 💖
• liveupdate_num — a counter that tracks how many successful live updates have happened. she's keeping score fr fr 🔥
• sessions_pa — the physical address of the first session block header. note the _pa, bestie — that's a physical address, not just any address 👑
• flbs_pa — the physical address of the FLB header. again, physical address. don't get it twisted 🙈

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🌈 Description 🌈

this structure is the root of all preserved LUO state. that's the whole description but honestly it's a big deal — she's the origin point, the main character of the preserved-state situation ⭐

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💜 SEE ALSO 💜

• the kernel file ./include/linux/kho/abi/luo.h — go read it, iykyk 📖
• Live Update Orchestrator ABI(9)
• struct luo_file_ser(9)
• struct luo_file_set_ser(9)
• struct luo_session_ser(9)
• struct luo_flb_header_ser(9)
• struct luo_flb_ser(9)

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that's the whole page, bestie. you ate it up 💀✨

sign-off vibes: this one lives in ./include/linux/kho/abi and it's dated October 2026, so like… future girlboss energy fr 🧚‍♀️💜