FEATURE_PASID_SHIFT 1769 drivers/iommu/amd_iommu_init.c 		pasmax >>= FEATURE_PASID_SHIFT;
FEATURE_PASID_SHIFT   98 drivers/iommu/amd_iommu_types.h #define FEATURE_PASID_MASK	(0x1fULL << FEATURE_PASID_SHIFT)