HUGETLB_FLAG_ENCODE_512KB   24 include/uapi/asm-generic/hugetlb_encode.h #define HUGETLB_FLAG_ENCODE_512KB	(19 << HUGETLB_FLAG_ENCODE_SHIFT)
HUGETLB_FLAG_ENCODE_512KB   24 tools/include/asm-generic/hugetlb_encode.h #define HUGETLB_FLAG_ENCODE_512KB	(19 << HUGETLB_FLAG_ENCODE_SHIFT)