memblock_reserved_mark_kern(9)

💖 memblock_reserved_mark_kern (9) — Kernel API Manual 💖

okay so bestie, welcome to the kernel API docs, this one's literally called memblock_reserved_mark_kern and it's about tagging a reserved memory region with a flag. slay. let's get into it 🫶

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✨ NAME ✨

memblock_reserved_mark_kern — marks a reserved memory region with the flag MEMBLOCK_RSRV_KERN. that's the whole vibe. no cap. 🎀

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🌸 SYNOPSIS 🌸

int __init_memblock memblock_reserved_mark_kern (phys_addr_t base ,
       phys_addr_t size );

look at her go 😭 she takes two args and gives you back an int, and she's both __init_memblock and iconic. iykyk.

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🦋 ARGUMENTS 🦋

• base — the base phys addr of the region. like, where the region starts, physically 💫
• size — the size of the region. how much of it there is, bestie 📏

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🔥 RETURN 🔥

• 0 on success ✨
• -errno on failure 💀

so basically if you get 0 you ate, and if you get a negative errno something went sideways and it's giving error vibes. periodt.

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👑 SEE ALSO 👑

okay this list is lowkey long but every single one matters, so here we go, no skipping, fr fr 💅

• Kernel file ./mm/memblock.c memblock overview(9)
• __memblock_find_range_bottom_up(9)
• __memblock_find_range_top_down(9)
• memblock_find_in_range_node(9)
• memblock_find_in_range(9)
• memblock_discard(9)
• memblock_double_array(9)
• memblock_merge_regions(9)
• memblock_insert_region(9)
• memblock_add_range(9)
• memblock_add_node(9)
• memblock_add(9)
• memblock_validate_numa_coverage(9)
• memblock_isolate_range(9)
• memblock_free(9)
• memblock_phys_free(9)
• memblock_setclr_flag(9)
• memblock_mark_hotplug(9)
• memblock_clear_hotplug(9)
• memblock_mark_mirror(9)
• memblock_mark_nomap(9)
• memblock_clear_nomap(9)
• memblock_reserved_mark_noinit(9)
• memblock_mark_kho_scratch(9)
• memblock_clear_kho_scratch(9)
• __next_mem_range(9)
• __next_mem_range_rev(9)
• memblock_set_node(9)
• memblock_alloc_range_nid(9)
• memblock_phys_alloc_range(9)
• memblock_phys_alloc_try_nid(9)
• memblock_alloc_internal(9)
• memblock_alloc_exact_nid_raw(9)
• memblock_alloc_try_nid_raw(9)
• memblock_alloc_hugetlb(9)
• memblock_alloc_try_nid(9)
• __memblock_alloc_or_panic(9)
• memblock_estimated_nr_free_pages(9)
• memblock_is_region_memory(9)
• memblock_is_region_reserved(9)
• memblock_free_all(9)
• reserve_mem_find_by_name(9)
• reserve_mem_release_by_name(9)

like, that's the whole memblock friend group and they're all linked. main character energy all around 🌈⭐

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ngl bestie, this is a kernel-internal thing, so don't go calling it from userspace, it lives in ./mm where the memory management girlies hang out 🧚

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mwah 💋 this page came from the source ./mm and it's dated October 2026 — go off, kernel docs, you absolute legend 👑💖