DMA error "PTE Read access is not set" with 82599 10Gb Dual Port Backplane Connection

Solution Verified - Updated -

Issue

Output from the dmesg:

[  222.278627] dmar: DMAR:[DMA Read] Request device [08:00.0] fault addr 52633d000
[  224.168760] dmar: DRHD: handling fault status reg 102
[  224.169003] dmar: DMAR:[DMA Read] Request device [08:00.0] fault addr 52633d000
[  225.164728] dmar: DRHD: handling fault status reg 202
[  225.164978] dmar: DMAR:[DMA Read] Request device [08:00.0] fault addr 52633d000
[  225.200170] dmar: DRHD: handling fault status reg 302
[  225.200398] dmar: DMAR:[DMA Read] Request device [08:00.0] fault addr 52633d000
[  226.172331] dmar: DRHD: handling fault status reg 402
[  226.172569] dmar: DMAR:[DMA Read] Request device [08:00.0] fault addr 52633d000
[  227.199846] dmar: DRHD: handling fault status reg 502
[  227.200088] dmar: DMAR:[DMA Read] Request device [08:00.0] fault addr 52633d000

Environment

  • Red Hat OpenStack Platform 8
  • OVS v2.4
  • DPDK v2.0

Hardware specifications:

  • HP C7k, BL460c-G9

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