SR-IOV support in MLX CX2

SR-IOV support in MLX CX2

[Wei Lin Guay]

Hi all,

Is Mellanox CX2 HCA supports SR-IOV? I'm currently using CentOS 5.5 with
Xen 4.0.1 but open for any recommendation on different linux dist. The
first blocking issue that I have is my CX2 doesn't have the SR-IOV
extended capability in the PCI config dump as mentioned in the
specification. What are the additional firmware/driver that is required in
order to have the SR-IOV support in CX2? If SR-IOV is currently not
supported, how can I enable PCI-bypass for CX2 in Xen?

02:00.0 InfiniBand: Mellanox Technologies MT26428 [ConnectX VPI PCIe 2.0
5GT/s - IB QDR / 10GigE] (rev b0)
        Subsystem: Mellanox Technologies Device 0017
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at fbd00000 (64-bit, non-prefetchable) [size=1M]
        Memory at f9800000 (64-bit, prefetchable) [size=8M]
        Capabilities: [40] Power Management version 3
        Capabilities: [48] Vital Product Data
        Capabilities: [9c] MSI-X: Enable+ Count=256 Masked-
        Capabilities: [60] Express Endpoint, MSI 00
        Capabilities: [100] Alternative Routing-ID Interpretation (ARI)
        Kernel driver in use: mlx4_core
        Kernel modules: mlx4_core

Thanks,
Wei Lin
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Re: SR-IOV support in MLX CX2

[Tziporet Koren]

  On 1/10/2011 4:03 PM, Wei Lin Guay wrote:
> Hi all,
>
> Is Mellanox CX2 HCA supports SR-IOV? I'm currently using CentOS 5.5 with
> Xen 4.0.1 but open for any recommendation on different linux dist. The
> first blocking issue that I have is my CX2 doesn't have the SR-IOV
> extended capability in the PCI config dump as mentioned in the
> specification. What are the additional firmware/driver that is required in
> order to have the SR-IOV support in CX2? If SR-IOV is currently not
> supported, how can I enable PCI-bypass for CX2 in Xen?
>
>
>
CX2 is capable of supporting SRIOV, however we have not yet released FW 
and driver for this
This is under work now and I hope we will start submitting patches to 
the kernel soon ...

Tziporet

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