Re: [Xen-devel] Can we disable secondary_bus_reset in runtime?

["Neo Jia" <neojia@xxxxxxxxx>]

Dexuan,

If you don't do a SecondaryBusReset, will the NIC card driver be
loaded after you reboot the guest VM?

Just want to make sure if the reset works.

I will also check on my side about the failure case.

Thanks,
Neo

On Tue, Sep 2, 2008 at 8:24 PM, Cui, Dexuan <dexuan.cui@xxxxxxxxx> wrote:
> Yes.  I plugged a 82541PI NIC(01:00.0) into motherborad  and tested the 
> SecondaryBusReset against 00:1e.0.
> (Please see the below for the PCI hierarchy of my host)
>
> And actually the same python function was tested on many hosts by our QA. No 
> issue is reported about it.
> I haven't received other issue report before you. :-)
> Your host is also DQ35?  What is the details of the issue?
>
> [root@cui ~]# lspci -tv
> -[0000:00]-+-00.0  Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller
>           +-02.0  Intel Corporation 82G33/G31 Express Integrated Graphics 
> Controller
>           +-03.0  Intel Corporation 82G33/G31/P35/P31 Express MEI Controller
>           +-03.1  Intel Corporation 82G33/G31/P35/P31 Express MEI Controller
>           +-03.2  Intel Corporation 82G33/G31/P35/P31 Express PT IDER 
> Controller
>           +-03.3  Intel Corporation 82G33/G31/P35/P31 Express Serial KT 
> Controller
>           +-19.0  Intel Corporation 82566DM-2 Gigabit Network Connection
>           +-1a.0  Intel Corporation 82801I (ICH9 Family) USB UHCI Controller 
> #4
>           +-1a.1  Intel Corporation 82801I (ICH9 Family) USB UHCI Controller 
> #5
>           +-1a.2  Intel Corporation 82801I (ICH9 Family) USB UHCI Controller 
> #6
>           +-1a.7  Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller 
> #2
>           +-1b.0  Intel Corporation 82801I (ICH9 Family) HD Audio Controller
>           +-1d.0  Intel Corporation 82801I (ICH9 Family) USB UHCI Controller 
> #1
>           +-1d.1  Intel Corporation 82801I (ICH9 Family) USB UHCI Controller 
> #2
>           +-1d.2  Intel Corporation 82801I (ICH9 Family) USB UHCI Controller 
> #3
>           +-1d.7  Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller 
> #1
>           +-1e.0-[0000:01]----00.0  Intel Corporation 82541PI Gigabit 
> Ethernet Controller
>           +-1f.0  Intel Corporation Unknown device 2910
>           +-1f.2  Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 4 port SATA 
> IDE Controller
>           +-1f.3  Intel Corporation 82801I (ICH9 Family) SMBus Controller
>           \-1f.5  Intel Corporation 82801I (ICH9 Family) 2 port SATA IDE 
> Controller
>
>
> -----Original Message-----
> From: Neo Jia [mailto:neojia@xxxxxxxxx]
> Sent: 2008年9月3日 11:10
> To: Cui, Dexuan
> Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-devel] Can we disable secondary_bus_reset in runtime?
>
> Dexuan,
>
> Have you ever try/test the secondary bus reset on any NIC?
>
> Thanks,
> Neo
>
> 2008/9/2 Cui, Dexuan <dexuan.cui@xxxxxxxxx>:
>> Hi Neo,
>> I think you mean the python function do_secondary_bus_reset().
>> Could you please detail the issue you meet with?
>> If you want to not use that for debug's perpose temporarily, you can just 
>> modify tools/python/xen/util/pci.py: do_FLR(). (and you may also need to 
>> remove some checkings in 
>> tools/python/xen/xend/server/pciif.py:setupDevice()), then execute "xend 
>> restart" to make the changes take effect.
>>
>> -- Dexuan
>>
>>
>> -----Original Message-----
>> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
>> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Neo Jia
>> Sent: 2008年9月3日 7:41
>> To: xen-devel@xxxxxxxxxxxxxxxxxxx
>> Subject: [Xen-devel] Can we disable secondary_bus_reset in runtime?
>>
>> I think we need this feature at least for debugging purpose, right?
>>
>> Or, do we already have this feature?
>>
>> Thanks,
>> Neo
>>
>> --
>> I would remember that if researchers were not ambitious
>> probably today we haven't the technology we are using!
>>
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-devel
>>
>
>
>
> --
> I would remember that if researchers were not ambitious
> probably today we haven't the technology we are using!
>



-- 
I would remember that if researchers were not ambitious
probably today we haven't the technology we are using!

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