Re: about sr-iov

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

On Wed, Nov 24, 2010 at 09:16:50PM +0800, Zhuo Song wrote:
> Hi,
> 
>  
> 
> I got a problem when prepared to pass-thru 82576 ethernet card with SR-IOV
> support. 

To a PV guest? Or is this just when you were booting up the machine and tried
to initialize the card?
> 
>  
> 
> The 82576 card is build-in on the board. When loading igb driver for the
> card, dmesg show some errors like:
> 
>  
> 
> pci 0000:05:00.0: BAR 10: can't allocate mem resource
> [0xfbf00000-0xfbefffff]
> 
> .
> 
> igb 0000:05:00.0: not enough MMIO resources for SR-IOV
> 
> igb 0000:05:00.0: Failed to initialize SR-IOV virtualization
> 
>  
> 
> Some system information from DMI as below:
> 
>  
> 
> XEN 4.0.0, DOM0 kernel 2.6.32, igb driver 2.2.9
> 
>  
> 
> System Information
> 
>         Manufacturer: HP
> 
>         Product Name: ProLiant DL160 G6  
> 
>  
> 
> BIOS Information
> 
>         Vendor: HP
> 
>         Version: O33
> 
>         Release Date: 06/10/2009
> 
>         Address: 0xF0000
> 
>         Runtime Size: 64 kB
> 
>         ROM Size: 2048 kB
> 
>         BIOS Revision: 8.15
> 
>  
> 
> LAN option rom, the version is intel agent boot GE 1.3.24, PXE2.1
> 
>  
> 
> Processor Information
> 
>         Socket Designation: Proc 2
> 
>         Type: Central Processor
> 
>         Family: Xeon
> 
>         Manufacturer: Intel            
> 
>         Signature: Type 0, Family 6, Model 26, Stepping 5
> 
> Version: Intel(R) Xeon(R) CPU           E5504  @ 2.00GHz
> 
>  
> 
> The same igb driver works well on a dell server with 82576 adapter. I
> thought BIOS got some problem to assign right memory for VFs and I tried to
> pass *pci=assign-busses* to kernel, but it still failed. Does the 82576 card
> SR-IOV need a BIOS enable and a *REBOOT* to make the function active?  Can
> anyone just give me some ideas? Thanks.
> 
>  
> 
> Best Regards
> 
> face
> 
> Zhuo Song
> 
> Gif me a visky, ginger ale on the side.
> 
>  
> 



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