Hello,
I am using DPDK 1.5 for development of host pmd for device ?Connect X3?. I am observing issue while the ConnectX3 device DMA to a memory which is allocated with rte_memzone_reserve_aligned() API . The issue(please refer ERROR below) has been observed if the system runs with the kernel parameter ?intel_iommu=on?. ERROR : dmar: DRHD: handling fault status reg 302 dmar: DMAR:[DMA Write] Request device [01:00.0] fault addr 4f883000 DMAR:[fault reason 01] Present bit in root entry is clear The reported "fault Addr" is the physical address which was returned by the Above API. I don?t see any issue with the same code when the system up with kernel parameter intel_iommu=off. Can you share your comments on this issue? Thanks in advance Sri
