Bug 1339567 - DMA error "PTE Read access is not set" with 82599 10Gb Dual Port Backplane Connection
Summary: DMA error "PTE Read access is not set" with 82599 10Gb Dual Port Backplane Co...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: openvswitch-dpdk
Version: 7.2
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Open vSwitch development team
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-05-25 10:51 UTC by Robin Cernin
Modified: 2019-10-10 12:09 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-05-25 12:35:40 UTC
Target Upstream Version:


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Description Robin Cernin 2016-05-25 10:51:57 UTC
Description of problem:

DMA error "PTE Read access is not set"

Version-Release number of selected component (if applicable):
OVS v2.4
DPDK v2.0

How reproducible:

HW Specifications:
HP C7K , BL460c-G9

BIOS configuration:

Virtaulization Technology = Enabled
Intel(R) VT-d = Enabled
SR-IOV = Tested with both Disabled and Enabled SR-IOV.


Kernel version :

[root@server ~]# uname -a
Linux server.local 3.10.0-327.10.1.el7.x86_64 #1 SMP Sat Jan 23 04:54:55 EST 2016 x86_64 x86_64 x86_64 GNU/Linux


Kernel config :

[root@server ~]# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-3.10.0-327.10.1.el7.x86_64 root=UUID=c79b653b-d2bf-4f76-9ed1-f8445cd6acec ro vconsole.keymap=us vconsole.font=latarcyrheb-sun16 rhgb quiet LANG=en_US.UTF-8 crashkernel=auto vga=normal nomodeset 3 selinux=0 default_hugepagesz=1G hugepagesz=1G hugepages=87 iommu=pt intel_iommu=on

Adding port to OVS as dpdk port :

modprobe uio_pci_generic
dpdk_nic_bind.py --bind=uio_pci_generic 0000:08:00.0
ovs-vsctl add-port ...

[root@server ~]# dmesg | grep dma
[    0.053730] dmar: Host address width 46
[    0.053731] dmar: DRHD base: 0x000000fbffc000 flags: 0x0
[    0.053737] dmar: IOMMU 0: reg_base_addr fbffc000 ver 1:0 cap d2078c106f0466 ecap f020df
[    0.053738] dmar: DRHD base: 0x000000c7ffc000 flags: 0x1
[    0.053741] dmar: IOMMU 1: reg_base_addr c7ffc000 ver 1:0 cap d2078c106f0466 ecap f020df
[    0.053742] dmar: RMRR base: 0x00000079171000 end: 0x00000079173fff
[    0.053744] dmar: RMRR base: 0x000000791ed000 end: 0x000000791f0fff
[    0.053744] dmar: RMRR base: 0x000000791dd000 end: 0x000000791ecfff
[    0.053745] dmar: RMRR base: 0x000000791ca000 end: 0x000000791dafff
[    0.053746] dmar: RMRR base: 0x000000791db000 end: 0x000000791dcfff
[    0.053750] dmar: RMRR base: 0x0000005ac9d000 end: 0x0000005acdcfff
[    1.020336] pnp 00:01: [dma 4]
[    3.755796] ioatdma: Intel(R) QuickData Technology Driver 4.00
[    3.756468] ioatdma 0000:00:04.0: irq 302 for MSI/MSI-X
[    3.757199] ioatdma 0000:00:04.1: irq 304 for MSI/MSI-X
[    3.757597] ioatdma 0000:00:04.2: irq 305 for MSI/MSI-X
[    3.758044] ioatdma 0000:00:04.3: irq 306 for MSI/MSI-X
[    3.758352] ioatdma 0000:00:04.4: irq 307 for MSI/MSI-X
[    3.758669] ioatdma 0000:00:04.5: irq 308 for MSI/MSI-X
[    3.758978] ioatdma 0000:00:04.6: irq 309 for MSI/MSI-X
[    3.759292] ioatdma 0000:00:04.7: irq 310 for MSI/MSI-X
[    3.759600] ioatdma 0000:80:04.0: irq 312 for MSI/MSI-X
[    3.759849] ioatdma 0000:80:04.1: irq 314 for MSI/MSI-X
[    3.760093] ioatdma 0000:80:04.2: irq 316 for MSI/MSI-X
[    3.760356] ioatdma 0000:80:04.3: irq 318 for MSI/MSI-X
[    3.760599] ioatdma 0000:80:04.4: irq 319 for MSI/MSI-X
[    3.760828] ioatdma 0000:80:04.5: irq 320 for MSI/MSI-X
[    3.761189] ioatdma 0000:80:04.6: irq 321 for MSI/MSI-X
[    3.761407] ioatdma 0000:80:04.7: irq 322 for MSI/MSI-X
[    8.554411] RPC: Registered rdma transport module.
[  222.278558] dmar: DRHD: handling fault status reg 2
[  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

Bound PCI device:

[root@server ~]# dpdk_nic_bind.py --bind=uio_pci_generic 0000:08:00.0

[root@server ~]# dpdk_nic_bind.py --status

Network devices using DPDK-compatible driver
============================================
0000:08:00.0 '82599 10 Gigabit Dual Port Backplane Connection' drv=uio_pci_generic unused=

Network devices using kernel driver
===================================
0000:06:00.0 '82599 10 Gigabit Dual Port Backplane Connection' if=eno49 drv=ixgbe unused=uio_pci_generic *Active*
0000:06:00.1 '82599 10 Gigabit Dual Port Backplane Connection' if=eno50 drv=ixgbe unused=uio_pci_generic *Active*
0000:08:00.1 '82599 10 Gigabit Dual Port Backplane Connection' if=ens1f1 drv=ixgbe unused=uio_pci_generic

Other network devices
=====================
<none>


[root@server ~]# lspci -vvv -s 0000:08:00.0
                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
                        RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ FLReset-
                        MaxPayload 256 bytes, MaxReadReq 4096 bytes
                DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend+
                LnkCap: Port #0, Speed 5GT/s, Width x8, ASPM L0s, Exit Latency L0s unlimited, L1 <8us
                        ClockPM- Surprise- LLActRep- BwNot-
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 5GT/s, Width x8, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR-, OBFF Not Supported
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
                LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
                         Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        Capabilities: [e0] Vital Product Data
                Product Name: HP Ethernet 10Gb 2-port 560M Adapter
                Read-only fields:
                        [PN] Part number: some-part
                        [EC] Engineering changes: engineering-part                        [SN] Serial number: some-serial
                        [V0] Vendor specific: 5W/2W PCIeG2x8 2p 10Gb KR Intel 82599
                        [V2] Vendor specific: vendor-specific
                        [V4] Vendor specific: vendor-specific
                        [V5] Vendor specific: vendor-specific
                        [RV] Reserved: checksum good, 0 byte(s) reserved
                Read/write fields:
                        [V1] Vendor specific: 4.8.13
                        [V3] Vendor specific: 3.0.30
                        [V6] Vendor specific: 2.3.45
                        [YA] Asset tag: N/A
                        [YB] System specific: xxxxxxxxxxxxxxxx
                        [YC] System specific: xxxxxxxxxxxxxxxx
                End
        Capabilities: [100 v1] Advanced Error Reporting
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
        Capabilities: [140 v1] Device Serial Number 00-00-00-ff-ff-00-00-00
        Capabilities: [150 v1] Alternative Routing-ID Interpretation (ARI)
                ARICap: MFVC- ACS-, Next Function: 1
                ARICtl: MFVC- ACS-, Function Group: 0
        Capabilities: [160 v1] Single Root I/O Virtualization (SR-IOV)
                IOVCap: Migration-, Interrupt Message Number: 000
                IOVCtl: Enable- Migration- Interrupt- MSE- ARIHierarchy+
                IOVSta: Migration-
                Initial VFs: 64, Total VFs: 64, Number of VFs: 0, Function Dependency Link: 00
                VF offset: 128, stride: 2, Device ID: 10ed
                Supported Page Size: 00000553, System Page Size: 00000001
                Region 0: Memory at 0000039fffe00000 (64-bit, prefetchable)
                Region 3: Memory at 0000039fffd00000 (64-bit, prefetchable)
                VF Migration: offset: 00000000, BIR: 0
        Kernel driver in use: uio_pci_generic

Steps to Reproduce:
1. See above
2.
3.

Actual results:
"PTE Read access is not set"

Expected results:
Being able to use DPDK with 82599


Additional info:

Comment 1 Robin Cernin 2016-05-25 11:15:35 UTC
In parallel with you, we are testing to bind the adapter to vfio and checking the IOMMU groups:

# dpdk_nic_bind --­­bind vfio­-pci 0000:08:00.0

# find /sys/kernel/iommu_groups/ -type l

Thank you,
Kind Regards,
Robin Černín

Comment 2 Robin Cernin 2016-05-25 12:35:40 UTC
This issue was resolved by disabling the "HP Shared Memory features" for the NIC in BIOS.


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