ASID_FIRST_VERSION   39 arch/arm/mm/context.c #define ASID_FIRST_VERSION	(1ULL << ASID_BITS)
ASID_FIRST_VERSION   30 arch/arm64/mm/context.c #define ASID_FIRST_VERSION	(1UL << asid_bits)
ASID_FIRST_VERSION   19 arch/csky/mm/asid.c #define ASID_FIRST_VERSION(info)	(1UL << ((info)->bits))