memblock_add(9)

✨ memblock_add(9) ✨

okay so bestie, welcome to the memblock_add page 💖 this one lives in the Kernel API Manual and it's genuinely the moment your kernel tells the memory allocator "hey, there's a new region over here, add it to the roster". main character energy fr fr 🌸

---

🎀 NAME 🎀

memblock_add — add a new memblock region 👑

---

🦋 SYNOPSIS 🦋

int __init_memblock memblock_add (phys_addr_t base , phys_addr_t size );

---

💅 ARGUMENTS 💅

• base — the base address of the new region, like where it starts, the whole starting point of the vibe ✨
• size — how big the new region is 🍓

---

🌈 DESCRIPTION 🌈

Adds a new memblock region [base, base + size) to the "memory" type. so it's a half-open interval, bestie, base is in and base + size is not in, that's just how it is 💅

For mode details, go check out the description on memblock_add_range — that's where the real tea is 🫖

---

⭐ RETURN ⭐

• 0 on success 🎉
• -errno on failure 😭

---

🔥 SEE ALSO 🔥

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_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_reserved_mark_kern(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 squad, no cap 😤 go read them all, iykyk 🧚

---

and that's the page!! 💜 this lil beauty ships from ./mm and it's dated October 2026 — mwah, iconic, periodt 🎀✨🫶