kho_encode_radix_key(9)

💖 kho_encode_radix_key(9) 💖

okay bestie, welcome to the Kernel API Manual — we're doing a little radix key math today and honestly? it's giving tiny but mighty. ✨

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🌸 NAME 🌸

kho_encode_radix_key — squishes a physical address and an order into one single radix key. that's it. that's the whole job. no cap. 🎀

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🦋 SYNOPSIS 🦋

unsigned long kho_encode_radix_key (phys_addr_t phys , unsigned int order );

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🍓 ARGUMENTS 🍓

• phys — the physical address of the page. like, where it lives. 💅
• order — the order of the page. yes, that order. 🫶

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👑 DESCRIPTION 👑

so here's the tea ☕ — this function takes a page's physical address and its order and combines them into a single unsigned long. that one lil number becomes the key for all radix tree operations. literally all of them. it's giving main character energy for the whole tree. 🔥

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⭐ RETURN ⭐

the encoded unsigned long radix key. that's the good stuff. 💜

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🌈 SEE ALSO 🌈

• Kernel file ./kernel/liveupdate/kexec_handover.c
• kho_decode_radix_key(9)
• kho_radix_add_key(9)
• kho_radix_del_key(9)
• kho_radix_init_tree(9)
• kho_radix_destroy_tree(9)
• kho_radix_walk_tree(9)
• kho_restore_folio(9)
• kho_restore_pages(9)
• kho_reserve_scratch(9)
• kho_add_subtree(9)
• kho_preserve_folio(9)
• kho_unpreserve_folio(9)
• kho_preserve_pages(9)
• kho_unpreserve_pages(9)
• kho_preserve_vmalloc(9)
• kho_unpreserve_vmalloc(9)
• kho_restore_vmalloc(9)
• kho_alloc_preserve(9)
• kho_unpreserve_free(9)
• kho_restore_free(9)
• is_kho_boot(9)
• kho_retrieve_subtree(9)

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okay that's the whole page, ily, go encode some keys 💖✨🎀🦋

— this cutie lives in ./kernel/liveupdate, version October 2026, and it's still signing off as kho_encode_radix_key(9) 🧚💜