IOMMU Enable
# dmesg | grep AMD-Vi
[ 2.545838] AMD-Vi: Found IOMMU at 0000:00:00.2 cap 0x40
[ 2.545841] AMD-Vi: Found IOMMU at 0000:40:00.2 cap 0x40
[ 2.545842] AMD-Vi: Interrupt remapping enabled
[ 2.558475] AMD-Vi: Lazy IO/TLB flushing enabled
IOMMU Disable
# dmesg | grep AMD-Vi
