Enable Intel DMA Remapping Devices by default
configname: CONFIG_INTEL_IOMMU_DEFAULT_ON
Linux Kernel Configuration
└─>Device Drivers
└─>IOMMU Hardware Support
└─>Enable Intel DMA Remapping Devices by default
In linux kernel since version 3.1 (release Date: 2011-10-24)
Selecting this option will enable a DMAR device at boot time if
one is found. If this option is not selected, DMAR support can
be enabled by passing intel_iommu=on to the kernel.
one is found. If this option is not selected, DMAR support can
be enabled by passing intel_iommu=on to the kernel.