On Thu, Feb 15, 2018 at 2:28 AM, Burakov, Anatoly <anatoly.bura...@intel.com > wrote:
> On 14-Feb-18 8:00 PM, Ravi Kerur wrote: > >> >> Earlier I was focusing only on DMAR errors and I might have said 'it >> worked' when I didn't notice them on host when dpdk was started on guest. >> When trying to send packets out of that interface from guest I did see DMAR >> errors. I am attaching information you requested. I have enabled >> log-level=8 and files contain dpdk EAL/PMD logs as well. >> > > Great, now we're on the same page. > > >> Snippets below >> >> on host, DMAR fault address from dmesg >> >> [351576.998109] DMAR: DRHD: handling fault status reg 702 >> [351576.998113] DMAR: [DMA Read] Request device [04:10.0] fault addr >> 257617000 [fault reason 06] PTE Read access is not set >> >> on guest (dump phys_mem_layout) >> >> Segment 235: phys:0x257600000, len:2097152, virt:0x7fce87e00000, >> socket_id:0, hugepage_sz:2097152, nchannel:0, nrank:0 >> ... >> PMD: ixgbe_dev_rx_queue_setup(): sw_ring=0x7fce87e0f4c0 >> sw_sc_ring=0x7fce87e07380 hw_ring=0x7fce87e17600 dma_addr=0x257617600 >> PMD: ixgbe_dev_rx_queue_setup(): sw_ring=0x7fce89c67d40 >> sw_sc_ring=0x7fce89c5fc00 hw_ring=0x7fce89c6fe80 dma_addr=0x25406fe80 >> ... >> >> > To me this looks like host (i.e. either QEMU or the PF driver) is trying > to do DMA using guest-physical (and not host-physical). I'm not too > well-versed in how QEMU works, but i'm pretty sure that's not supposed to > happen. > > Is PF also bound to DPDK, or are you using native Linux ixgbe driver? > Thanks for your help. I cannot use PF with DPDK (vfio-pci), VF interfaces disappear after it is bound to DPDK. If there is a way to use PF and VF with DPDK let me know I can try it out. I am not sure how to move forward on this, Is CPU/IXGBE PF driver playing a role? Following are the versions I have lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 56 On-line CPU(s) list: 0-27 Off-line CPU(s) list: 28-55 Thread(s) per core: 1 Core(s) per socket: 14 Socket(s): 2 NUMA node(s): 2 Vendor ID: GenuineIntel CPU family: 6 Model: 63 Model name: Intel(R) Xeon(R) CPU E5-2683 v3 @ 2.00GHz Stepping: 2 CPU MHz: 2500.610 CPU max MHz: 3000.0000 CPU min MHz: 1200.0000 BogoMIPS: 4000.74 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 35840K NUMA node0 CPU(s): 0-13 NUMA node1 CPU(s): 14-27 # ethtool -i enp4s0f0 driver: ixgbe version: 5.3.3 firmware-version: 0x800007b8, 1.1018.0 bus-info: 0000:04:00.0 supports-statistics: yes supports-test: yes supports-eeprom-access: yes supports-register-dump: yes supports-priv-flags: yes Thanks, Ravi > > -- > Thanks, > Anatoly >
