GART_PAGE_SHIFT 30 drivers/iommu/tegra-gart.c #define GART_PAGE_SIZE (1 << GART_PAGE_SHIFT) GART_PAGE_SHIFT 31 drivers/iommu/tegra-gart.c #define GART_PAGE_MASK GENMASK(30, GART_PAGE_SHIFT) GART_PAGE_SHIFT 337 drivers/iommu/tegra-gart.c BUILD_BUG_ON(PAGE_SHIFT != GART_PAGE_SHIFT);