STRUCT KLP_SHADOW(9)

💅 struct klp_shadow(9) 💅

okay bestie, welcome to the struct klp_shadow(9) page from the Kernel API Manual — this is the shadow variable structure, and we're gonna cover every single field, no skips, fr fr. ✨

🌸 NAME 🌸

struct klp_shadow — shadow variable structure. That's the whole vibe. 🫶

✨ SYNOPSIS ✨

here's the struct in all its glory, and yes, every line is exactly this:

       struct klp_shadow {
           struct hlist_node node;
           struct rcu_head rcu_head;
           void *obj;
           unsigned long id;
           char data[];
        };

🎀 Members 🎀

• node — the klp_shadow_hash hash table node. 🌈
• rcu_head — RCU is used to safely free this structure. 🔥
• obj — pointer to parent object. 👑
• id — data identifier. 🍓
• data — data area. 🧚

🦋 SEE ALSO 🦋

• Kernel file ./kernel/livepatch/shadow.c — yep, that one. 💖
• Shadow variable API concurrency notes:(9) — the concurrency notes, iykyk. 😭
• klp_shadow_match(9)
• klp_shadow_get(9)
• klp_shadow_alloc(9)
• klp_shadow_get_or_alloc(9)
• klp_shadow_free(9)
• klp_shadow_free_all(9)

xoxo, bestie 💖 this one's from source/version ./kernel/livepatch, dated October 2026, and it's struct klp_shadow(9) all the way down 🌸