PM_LEVEL_SHIFT    271 drivers/iommu/amd_iommu_types.h 				  ((1ULL << PM_LEVEL_SHIFT((x))) - 1): \
PM_LEVEL_SHIFT    273 drivers/iommu/amd_iommu_types.h #define PM_LEVEL_INDEX(x, a)	(((a) >> PM_LEVEL_SHIFT((x))) & 0x1ffULL)