[dpdk-dev] [PATCH] eal: add option to force IOVA as PA mode

[Thomas Monjalon]

30/11/2017 03:57, Chas Williams:
> From: Chas Williams <chas3 at att.com>
> 
> The IOMMU in some machines report that they can only support
> limited widths.  IOVA virtual addresses may exceed this width
> making the use of IOVA virtual addresses difficult.  The option
> CONFIG_RTE_LIBRTE_USE_PHYS_IOVA can used to force IOVA physical
> address usage.

Which machines are you talking about?
A run-time option may be a better solution.