[dpdk-dev] DMAR errors when running testpmd

[Burakov, Anatoly]

Hi Tomasz,

Your words:

> We've enabled SR-IOV in BIOS and set appropriate flags when booting kernel
> (iommu=pt intel_iommu=on)

Your other words:

> Yes I do have iommu=on set when booting kernel.

Here lies your mistake :-) Boot your kernel with iommu to "pt" (iommu=pt intel_iommu=on) and everything will work. Thje "pt" option enables IOMMU only for VM's while "on" sets up your whole system to work through IOMMU (including host devices). However, both of these options enable SR-IOV. 

Best regards,
Anatoly Burakov
DPDK SW Engineer