ENUM EDAC_TYPE(9)

💅 enum edac_type(9) 💅

okay so this is from the Kernel API Manual (yes, the enum edac_type(9) page, we're doing this) and it's all about Error Detection and Correction — ECC for short — and literally every capability + mode the kernel knows about. bestie, this is the cheat sheet for "what kind of memory error protection are we even talking about" 🦋

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✨ NAME ✨

enum edac_type — Error Detection and Correction capabilities and mode 🫶

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🌸 SYNOPSIS 🌸

enum edac_type {
    EDAC_UNKNOWN ,
    EDAC_NONE ,
    EDAC_RESERVED ,
    EDAC_PARITY ,
    EDAC_EC ,
    EDAC_SECDED ,
    EDAC_S2ECD2ED ,
    EDAC_S4ECD4ED ,
    EDAC_S8ECD8ED ,
    EDAC_S16ECD16ED

};

like, that's the whole roster. no cap. 👑

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🎀 Constants 🎀

okay let's meet the cast, one by one 💖

• EDAC_UNKNOWN — honestly? no idea. we don't know if ECC is even available here 🙈
• EDAC_NONE — nope, this one straight up doesn't support ECC. not its era 💀
• EDAC_RESERVED — a reserved ECC type. it's giving "held for later, don't touch" ✨
• EDAC_PARITY — detects parity errors. detection only, it's not fixing anything, just pointing at the problem 💅
• EDAC_EC — Error Checking, and that's it — no correction. spots the drama, doesn't resolve it 😭
• EDAC_SECDED — Single bit error correction, Double detection. the classic. iconic. corrects one, catches two 🔥
• EDAC_S2ECD2ED — Chipkill x2 devices — and honestly the manpage itself is like "do these exist?" 💀 we're all asking the same question bestie
• EDAC_S4ECD4ED — Chipkill x4 devices 🌈
• EDAC_S8ECD8ED — Chipkill x8 devices ⭐
• EDAC_S16ECD16ED — Chipkill x16 devices 👑

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🦋 SEE ALSO 🦋

all of these live in the Kernel file ./include/linux/edac.h — go read the whole friend group 💜

• enum dev_type(9)
• enum hw_event_mc_err_type(9)
• enum mem_type(9)
• enum scrub_type(9)
• enum edac_mc_layer_type(9)
• struct edac_mc_layer(9)
• struct rank_info(9)
• struct edac_raw_error_desc(9)
• edac_get_dimm(9)
• struct edac_scrub_ops(9)
• struct edac_ecs_ops(9)
• struct edac_mem_repair_ops(9)

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lowkey a whole family reunion in one header file, and you're invited 🧚

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and that's the page!! mwah 💋 — this little drop comes from ./include/linux, dated October 2026, and it's the enum edac_type(9) page, so go forth and correct those single bits, bestie 🍓🌸💖