Dpdk needs NOIOMMU mode for virtualization in Aliyun. It depends
on vfio in Alinux2.
With VFIO_NOIOMMU configured, NOIOMMU mode can be enabled by:
/sys/module/vfio/parameters/enable_unsafe_noiommu_mode. The default
is IOMMU mode.
Signed-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
Reviewed-by: NJoseph Qi <joseph.qi@linux.alibaba.com>