RE: [Xen-devel] [PATCH] Add VMDq support to ixgbe

["Santos, Jose Renato G" <joserenato.santos@xxxxxx>]

> -----Original Message-----
> From: Williams, Mitch A [mailto:mitch.a.williams@xxxxxxxxx] 
> Sent: Friday, February 06, 2009 2:30 PM
> To: Santos, Jose Renato G; xen-devel@xxxxxxxxxxxxxxxxxxx
> Cc: steven.smith@xxxxxxxxxxxxx
> Subject: RE: [Xen-devel] [PATCH] Add VMDq support to ixgbe
> 
> >
> >  Here is the kenel panic output
> >  I have also attached the output of "dmesg" and "xm dmesg" 
> >that is executed just after the system boots
> >  Could you please send me the same output for your system so I can 
> >take a look and see if I can spot anything?
> >
> 
> I think I see what's going on -- it's definitely a logic bug. 
>  I've reproduced the crash here, and I'll try to get a fix out ASAP.
> 
> Looks like when I added vmq, I broke RSS, which is the 
> default configuration.
> 
> Make sure you have "options ixgbe VMDQ=8" in 
> /etc/modprobe.conf, then you should be OK.
> 

I think I am doing that already, except that the driver is built in the kernel 
and the option is passed as a boot parameter

If you look at the output of the dmesg that I sent in a previous email you can 
find the following lines relevant to ixbge: 

ixgbe: Virtual Machine Device Queues (VMDQ) set to 8
ixgbe: packet split disabled for Xen VMDQ
ixgbe: 0000:13:00.0: ixgbe_init_interrupt_scheme: Multiqueue Enabled: Rx Queue 
count = 8, Tx Queue count = 8
ixgbe: eth2: ixgbe_probe: (PCI Express:2.5Gb/s:Width x8) 00:1b:21:04:c3:2d
ixgbe: eth2: ixgbe_probe: MAC: 1, PHY: 2
ixgbe: eth2: ixgbe_probe: Internal LRO is enabled 
ixgbe: eth2: ixgbe_probe: Intel(R) 10 Gigabit Network Connection

As you see VMDQ is in fact being set to 8.
So I think the problem is somewhere else.
Please look at the older version of the code that I sent as I think we may have 
fixed this problem in the past. I am not sure if this problem was one of the 
problems we fixed but we know that the older version of the code works for us.

Thanks

Renato 
> -Mitch
> 
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