kho_restore_pages(9)

✨ kho_restore_pages(9) ✨

hey bestie 💖 welcome to the Kernel API Manual, section 9 — this is the page for kho_restore_pages, and it's lowkey iconic for bringing pages back. no cap.

🌸 NAME 🌸

kho_restore_pages — restore list of contiguous order 0 pages. 🫶

✨ SYNOPSIS ✨

struct page * kho_restore_pages (phys_addr_t phys , unsigned long
       nr_pages );

🎀 ARGUMENTS 🎀

• phys — physical address of the first page. that's where the page crew starts, bestie 🦋
• nr_pages — number of pages. count 'em and slay ✨

💅 DESCRIPTION 💅

okay so this function restores a contiguous list of order 0 pages that was preserved with kho_preserve_pages. it's giving "bring the preserved pages back to main character energy" 💖 and yes, the order 0 and contiguous details are literally part of the vibe check.

🔥 RETURN 🔥

the first page on success, NULL on failure. so if it works you get the first page back — iconic — and if not, NULL says hi 😭.

🦋 SEE ALSO 🦋

the kernel file to peek at is ./kernel/liveupdate/kexec_handover.c. and these related pages are all in the group chat too:

• kho_encode_radix_key(9)
• 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_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)

okay that's the whole page 💅 source/version is ./kernel/liveupdate, date October 2026, and the manual page is kho_restore_pages(9) — bye bestie, go restore those pages fr fr 🫶✨