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Date: Thu, 5 Nov 2015 09:19:25 -0800
From: Stephen Hemminger <shemming@brocade.com>
To: Helin Zhang <helin.zhang@intel.com>, <dev@dpdk.org>, Jesse Brandeburg
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Subject: [dpdk-dev] BUG: DPDK i40e does not work with VFIO
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On my machine, i40e will not startup if using VFIO.

PMD: rte_i40evf_pmd_init():  >>
PMD: rte_i40e_pmd_init():  >>
PMD: eth_i40e_dev_init():  >>
PMD: i40e_set_symmetric_hash_enable_per_port(): Symmetric hash has already been disabled
PMD: eth_i40e_dev_init(): Failed to init adminq: -54

The normal Linux driver works correctly. Firmware has been updated to the latest version.

Like my earlier experience with fm10k, I suspect that Intel never tests i40e with IOMMU,
and only tested with igb_uio.