e820ram 438 arch/x86/mm/numa.c u64 numaram, e820ram; e820ram 451 arch/x86/mm/numa.c e820ram = max_pfn - absent_pages_in_range(0, max_pfn); e820ram 454 arch/x86/mm/numa.c if ((s64)(e820ram - numaram) >= (1 << (20 - PAGE_SHIFT))) { e820ram 457 arch/x86/mm/numa.c (e820ram << PAGE_SHIFT) >> 20);