memblock_re...ory_base_pfn(9)

💖 memblock_re...ory_base_pfn(9) 💖

okay bestie so you found yourself in the Kernel API Manual, welcome, this one's a tiny little icon but she's important. ✨

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🌸 NAME 🌸

memblock_region_memory_base_pfn — literally just get the lowest pfn of the memory region 🎀

🦋 SYNOPSIS 🦋

unsigned long memblock_region_memory_base_pfn (const struct
       memblock_region *reg );

like, that's the whole thing. she takes one pointer and hands you back an unsigned long. no cap. 💅

✨ ARGUMENTS ✨

• reg — the memblock_region structure 🫶 that's it, that's the whole argument list, she's low-maintenance

⭐ RETURN ⭐

returns the lowest pfn intersecting with the memory region 👑 that's the whole vibe, that's what you came for

💜 SEE ALSO 💜

okay this is the part where she name-drops her entire friend group, and honestly? obsessed. 🍓

Kernel file ./include/linux/memblock.h

• enum memblock_flags(9)
• struct memblock_region(9)
• struct memblock_type(9)
• struct memblock(9)
• for_each_physmem_range(9)
• __for_each_mem_range(9)
• __for_each_mem_range_rev(9)
• for_each_mem_range(9)
• for_each_mem_range_rev(9)
• for_each_reserved_mem_range(9)
• for_each_mem_pfn_range(9)
• for_each_free_mem_range(9)
• for_each_free_mem_range_reverse(9)
• memblock_set_current_limit(9)
• memblock_region_memory_end_pfn(9)
• memblock_region_reserved_base_pfn(9)
• memblock_region_reserved_end_pfn(9)
• for_each_mem_region(9)
• for_each_reserved_mem_region(9)

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and that's the whole page bestie, go forth and get that pfn 🌈🧚

k byeee 💖 this one ships out of ./include/linux, October 2026 edition, filed under memblock_re...ory_base_pfn(9) — mwah 💋