[dpdk-dev] DMAR errors when running testpmd

Burakov, Anatoly anatoly.burakov at intel.com
Wed May 7 16:07:25 CEST 2014


Hi Tomasz

It looks like you have your kernel booted with iommu=on. Please check your /proc/cmdline to make sure you didn't accidentally selected the wrong bootloader entry.

> We're trying to run testpmd application on HP Proliant DL380P Gen 8 server.
> We've enabled SR-IOV in BIOS and set appropriate flags when booting kernel
> (iommu=pt intel_iommu=on) The NIC we are using is 82599EB (2 ports, 10Gb
> SFP+)
> 
> When running testpmd application we always encouter DMAR error in dmesg
> 
> [  186.302866] dmar: DRHD: handling fault status reg 2 [  186.302872] dmar:
> DMAR:[DMA Read] Request device [07:00.1] fault addr
> 1f73220000
> [  186.302872] DMAR:[fault reason 06] PTE Read access is not set [
> 186.302875] dmar: DMAR:[DMA Read] Request device [07:00.0] fault addr
> 1f73200000
> [  186.302875] DMAR:[fault reason 06] PTE Read access is not set [
> 324.759520] dmar: DRHD: handling fault status reg 202 [  324.759525] dmar:
> DMAR:[DMA Read] Request device [07:00.1] fault addr
> 1f73220000
> [  324.759525] DMAR:[fault reason 06] PTE Read access is not set [
> 324.759528] dmar: DMAR:[DMA Read] Request device [07:00.0] fault addr
> 1f73200000
> [  324.759528] DMAR:[fault reason 06] PTE Read access is not set

Best regards,
Anatoly Burakov
DPDK SW Engineer





More information about the dev mailing list