Re: [Xen-devel] PCI passthrough issue

[Jean Baptiste Favre <xen-devel@xxxxxxxxxxx>]

Hello Konrad,
Have tested with Debian 32bits domU. Once domU is started, log in via xm
console and exec "ping 10.0.0.1" and "ping -s86 10.0.0.1"
Here are the results:

- 32bits kernel + 32bits Debian Squeeze => ping -s86 FAILS
- 64bits kernel + 32bits Debian Squeeze => WORKS
- 64bits kernel + 64bits Debian Squeeze => WORKS

Used kernels are:
32bit: linux-image-2.6.37-trunk-686-bigmem
64bit: linux-image-2.6.37-trunk-amd64

Will now try to compile openwrt kernel as 64bits and update you.

Regards,
JB

Le 17/01/2011 09:59, Jean Baptiste Favre a écrit :
> Hello,
> Has made little tests this week-end.
> - Can not use full vanilla kernel with OpenWRT. Must apply some patch to
> make OpenWRT boot and don't had enough time to figure out which one
> exactly. Will work on it this week.
> - Have tested a Debian PV 64bits domU with 2.6.37 kernel from Debian
> experimental repository. Network is fully working. Will try a 32bits
> domU this week
> 
> So, at this point, either because of 64bits, either because of "better"
> kernel, network with PCI passthrough is working.
> 
> Still have to try 32bits kernel, as well as filtering OpenWRT patches.
> 
> Regards,
> JB
> 
> 
> Le 15/01/2011 00:29, Jean Baptiste Favre a écrit :
>> Hello,
>>
>> Le 14/01/2011 15:53, Konrad Rzeszutek Wilk a écrit :
>>>> Tought I told it in my previou smails. Sorry to missed it:
>>>
>>> You probably did and I missed it too. Good that you have those options, now:
>>>
>>> .. snip ..
>>>>> What does tcpdump tell you when you try to send it at -s86?
>>>>
>>>> I can see echo requests coming in on my gateway, replies going back but
>>>> replies are never received on the domU.
>>>
>>> What is the NIC you are using? Is it a Intel one? What does 
>>> /proc/interrupts look like?
>>
>> The NIC I use is "Marvell Technology Group Ltd. 88E8056 PCI-E Gigabit
>> Ethernet Controller", not Intel, with sky2 driver.
>>
>> # cat /proc/interrupts
>>            CPU0
>>  55:       1393  xen-pirq-pcifront-msi  sky2@pci:0000:00:00.0
>> 246:        202   xen-dyn-event     blkif
>> 247:        103   xen-dyn-event     hvc_console
>> 248:        603   xen-dyn-event     pcifront
>> 249:        259   xen-dyn-event     xenbus
>> 250:          0  xen-percpu-ipi       callfuncsingle0
>> 251:          0  xen-percpu-virq      debug0
>> 252:          0  xen-percpu-ipi       callfunc0
>> 253:          0  xen-percpu-ipi       resched0
>> 254:          0  xen-percpu-ipi       spinlock0
>> 255:     246058  xen-percpu-virq      timer0
>> NMI:          0   Non-maskable interrupts
>> LOC:          0   Local timer interrupts
>> SPU:          0   Spurious interrupts
>> PMI:          0   Performance monitoring interrupts
>> IWI:          0   IRQ work interrupts
>> RES:          0   Rescheduling interrupts
>> CAL:          0   Function call interrupts
>> TLB:          0   TLB shootdowns
>> TRM:          0   Thermal event interrupts
>> THR:          0   Threshold APIC interrupts
>> MCE:          0   Machine check exceptions
>> MCP:          0   Machine check polls
>> ERR:          0
>> MIS:          0
>>
>>
>>> Can you send me the full domU output? What does the Xen hypervisor mapping 
>>> look like
>> Output are attached to this mail.
>>
>>> (xm debug-keys q, xm debug-keys Q, xm debug-keys i)? What is the 
>>> motherboard you have?
>> dmidecode
>> ...
>> Handle 0x0002, DMI type 2, 15 bytes
>> Base Board Information
>>         Manufacturer: ASUSTeK Computer INC.
>>         Product Name: M3N18L T-M3N8200
>>         Version: Rev x.xx
>>         Serial Number: MS1C85B07000633
>>         Asset Tag: To Be Filled By O.E.M.
>>         Features:
>>                 Board is a hosting board
>>                 Board is replaceable
>>         Location In Chassis: To Be Filled By O.E.M.
>>         Chassis Handle: 0x0003
>>         Type: Motherboard
>>         Contained Object Handles: 0
>> ...
>>
>>> Did you look up to see if there are any errate for the motherboard or the 
>>> NIC you are using?
>> No, since everything was working fine (before I decided to test PCI
>> passthrough).
>>
>>> Do you have the latest firmware for the NIC and the latest BIOS for your 
>>> motherboard?
>> Not sure. Will check
>>
>>> Is the OpenWRT kernel you are using one that you built yourself or do they 
>>> package it
>>> for you? Can you try using a vaniall built one (2.6.37 vanilla is perfect).
>> It is packaged by openWRT Builroot. Just have to set the kernel version
>> I want to use.
>> Will try a vanilla kernel as soon as possible.
>>
>>> Is this a 64-bit kernel or 32-bit? Can you try using a 64-bit one (you 
>>> should be
>>> able to run a 64-bit kernel alongside 32-bit userspace).
>> OK, will try it as well.
>>
>> Regards,
>> JB
> 
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