menuconfig ION tristate "Ion Memory Manager" select GENERIC_ALLOCATOR help Chose this option to enable the ION Memory Manager. config ION_IOMMU bool config ION_TEGRA tristate "Ion for Tegra" depends on ARCH_TEGRA && ION select TEGRA_IOMMU_SMMU if !ARCH_TEGRA_2x_SOC select ION_IOMMU if TEGRA_IOMMU_SMMU help Choose this option if you wish to use ion on an nVidia Tegra.