CONFIG_XEN_GRANT_DMA_IOMMU (not configurable)

modulename: grant-dma-iommu.ko

configname: CONFIG_XEN_GRANT_DMA_IOMMU

Linux Kernel Configuration
└─>Device Drivers
└─>Xen driver support
└─>XEN_GRANT_DMA_IOMMU
In linux kernel since version 5.2 (release Date: 2019-07-07)  
source code:
drivers/xen/grant-dma-iommu.c

depends
CONFIG_XEN

is depended by
CONFIG_XEN_VIRTIO