pciutils bug affecting IBM Power systems - can someone from Foundations
please take a look.
Thanks.
Michael
On 02/16/2017 11:39 AM, Launchpad Bug Tracker wrote:
> bugproxy (bugproxy) has assigned this bug to you for Ubuntu:
>
> ---Problem Description---
> This bugzilla is for tracking that the pciutils tool needs to be updated to
> support pci gen4 cards. Mellanox CX5 card is a pci gen4 card and when I do
> the following commands I get error. I do not see these errors with Mellanox
> CX4 which is pci gen3 card.
> In a system, with Mellanox CX4 and CX5 IB with SRIOV:
> lspci | grep Mell
> 0001:01:00.0 Infiniband controller: Mellanox Technologies MT28800 Family
> [ConnectX-5 Ex]
> 0001:01:00.1 Infiniband controller: Mellanox Technologies MT28800 Family
> [ConnectX-5 Ex]
> 0001:01:00.2 Infiniband controller: Mellanox Technologies MT28800 Family
> [ConnectX-5 Virtual Function]
> 0002:01:00.0 Infiniband controller: Mellanox Technologies MT27700 Family
> [ConnectX-4]
> 0002:01:00.1 Infiniband controller: Mellanox Technologies MT27700 Family
> [ConnectX-4]
> 0002:01:00.2 Infiniband controller: Mellanox Technologies MT27700 Family
> [ConnectX-4 Virtual Function]
> If I do this command with CX4 is ok
> virsh nodedev-detach pci_0002_01_00_2
> Device pci_0002_01_00_2 detached
> but if I do this with CX5 it fails:
> virsh nodedev-detach pci_0001_01_00_2
> error: Failed to detach device pci_0001_01_00_2
> error: malformed 'speed' attribute: (null)
>
> This is what I see with CX5:
> lspci -vv -s 0001:01:00.2 | grep Speed
> LnkCap: Port #0, Speed unknown, Width x16, ASPM not supported, Exit Latency
> L0s unlimited, L1 unlimited
> LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt-
> ABWMgmt-
>
> and this is what I see for CX4
> lspci -vv -s 0002:01:00.2 | grep Speed
> LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM not supported, Exit Latency L0s
> unlimited, L1 unlimited
> LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt-
> ABWMgmt-
>
> ---Additional Hardware Info---
> using Mellanox CX5 card that is pci gen4
> lspci -vv -s 0001:01:00.0 | grep Speed
> LnkCap: Port #0, Speed unknown, Width x16, ASPM not
> supported, Exit Latency L0s unlimited, L1 unlimited
> LnkSta: Speed 8GT/s, Width x16, TrErr- Train- SlotClk+
> DLActive- BWMgmt- ABWMgmt-
> LnkCtl2: Target Link Speed: Unknown, EnterCompliance-
> SpeedDis-
>
>
>
> Machine Type = P8
>
> ---Steps to Reproduce---
> just plug a pci gen4 card to the system and do this command
> lspci -vv -s 0001:01:00.0 | grep Speed
> LnkCap: Port #0, Speed unknown, Width x16, ASPM not
> supported, Exit Latency L0s unlimited, L1 unlimited
> LnkSta: Speed 8GT/s, Width x16, TrErr- Train- SlotClk+
> DLActive- BWMgmt- ABWMgmt-
> LnkCtl2: Target Link Speed: Unknown, EnterCompliance-
> SpeedDis-
> Will see the speed unknown.
>
> Userspace tool common name: pciutils
>
> The patch is already in the pci utils tree:
> commit 9628600bbbeffc4ec6dc48943ee091a5d3eca18b
> Author: Gavin Shan <[email protected]>
> Date: Wed Feb 15 10:53:45 2017 +1100
>
> lspci: Support GEN4 speed (16GT/s)
>
> This enables "lspci" to show GEN4 speed (16GT/s) properly according
> to the contents in register PCI_EXP_LNKCAP, PCI_EXP_LNKSTA and
> PCI_EXP_LNKCTL2.
>
> IBM is asking for the patch to go into 17.04 as well s 16.04.3.
>
> ** Affects: ubuntu
> Importance: Undecided
> Assignee: Taco Screen team (taco-screen-team)
> Status: New
>
>
> ** Tags: architecture-ppc64le bugnameltc-151418 severity-high
> targetmilestone-inin1704
--
Michael Hohnbaum
OIL Program Manager
Power (ppc64el) Development Project Manager
Canonical, Ltd.
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https://bugs.launchpad.net/bugs/1665436
Title:
lspci tool needs to be updated to support pci gen4 cards
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