default or selected kernelversion does not have config value CONFIG_DMA_VIRT_OPS.
Result is shown for kernelversion 6.9.9

CONFIG_DMA_VIRT_OPS (not configurable)

modulename: virt.ko

configname: CONFIG_DMA_VIRT_OPS

Linux Kernel Configuration
└─>Library routines
└─>DMA_VIRT_OPS
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
kernel/dma/virt.c
depends
CONFIG_HAS_DMA