MPIDR_LEVEL_BITS_SHIFT   15 arch/arm64/include/asm/cputype.h #define MPIDR_LEVEL_BITS	(1 << MPIDR_LEVEL_BITS_SHIFT)
MPIDR_LEVEL_BITS_SHIFT   19 arch/arm64/include/asm/cputype.h 	(((1 << level) >> 1) << MPIDR_LEVEL_BITS_SHIFT)