Yes. Iopl is to allow out from user space. I played with ioperm instead but that is per thread and was a nuisance.
- [dpdk-dev] [PATCH RFC 2/3] eal: don't call rte_eal_iopl_... David Marchand
- [dpdk-dev] [PATCH RFC 3/3] eal: remove unused flags fiel... David Marchand
- [dpdk-dev] [PATCH RFC 0/3] only call iopl when necessary Xie, Huawei
- [dpdk-dev] [PATCH RFC 0/3] only call iopl when nece... David Marchand
- [dpdk-dev] [PATCH RFC 0/3] only call iopl when ... Xie, Huawei
- [dpdk-dev] [PATCH RFC 0/3] only call iopl w... David Marchand
- [dpdk-dev] [PATCH RFC 0/3] only call io... Xie, Huawei
- [dpdk-dev] [PATCH RFC 0/3] only ca... Thomas Monjalon
- [dpdk-dev] [PATCH RFC 0/3] only call iopl when nece... Patel, Rashmin N
- [dpdk-dev] [PATCH RFC 0/3] only call iopl when ... Stephen Hemminger
- [dpdk-dev] [PATCH RFC 0/3] only call iopl when necessary Thomas Monjalon