MPIDR_LEVEL_MASK   55 arch/arm/include/asm/cputype.h #define MPIDR_LEVEL_MASK ((1 << MPIDR_LEVEL_BITS) - 1)
MPIDR_LEVEL_MASK   16 arch/arm64/include/asm/cputype.h #define MPIDR_LEVEL_MASK	((1 << MPIDR_LEVEL_BITS) - 1)