CONTROL_HT_TUN_EN 2207 drivers/iommu/amd_iommu_init.c 		iommu_feature_enable(iommu, CONTROL_HT_TUN_EN) :
CONTROL_HT_TUN_EN 2208 drivers/iommu/amd_iommu_init.c 		iommu_feature_disable(iommu, CONTROL_HT_TUN_EN);