e820_hole_size 338 arch/x86/mm/numa_64.c size = (max_addr - *addr - e820_hole_size(*addr, max_addr)) / e820_hole_size 367 arch/x86/mm/numa_64.c while (end - *addr - e820_hole_size(*addr, end) < e820_hole_size 122 include/asm-x86/e820.h extern u64 e820_hole_size(u64 start, u64 end);