PID_BITS           22 arch/nios2/mm/mmu_context.c #define PID_MASK	((1UL << PID_BITS) - 1)
PID_BITS           25 arch/nios2/mm/mmu_context.c #define VERSION_BITS	(32 - PID_BITS)
PID_BITS           26 arch/nios2/mm/mmu_context.c #define VERSION_SHIFT	(PID_SHIFT + PID_BITS)