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Marco Strullato

2007-Dec-03 15:39 UTC

[Xen-users] domU does not see the pci nic - pci passthrough

Hi all!
I want to assign a physical network card  (e100) to a domU:
I think  Dom0 is ok but domU does not recognize the pci nic.

into DomU I don''t know wath should I see: I have nothing in dmesg nor
in
messages...

Into Dom0 I have

this modules.conf:
options pciback hide=(0000:03: 08.0)
install e100 /sbin/modprobe pciback; /sbin/modprobe --ignore-install e100

This is dmesg:
pciback 0000:03:08.0: seizing device
ACPI: PCI Interrupt 0000:03:08.0[A] -> GSI 20 (level, low) -> IRQ 21
ACPI: PCI interrupt for device 0000:03:08.0 disabled
tg3.c:v3.65-rh (November 20, 2006)
ACPI: PCI Interrupt 0000:03:09.0[A] -> GSI 21 (level, low) -> IRQ 22
eth0: Tigon3 [partno(BCM95703A30U_HYB) rev 1100 PHY(5703)]
(PCI:33MHz:32-bit) 10/100/1000BaseT Ethernet 00:10:18:24:d2:a6
eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] Split[0] WireSpeed[1]
TSOcap[1]
eth0: dma_rwctrl[763f0000] dma_mask[64-bit]
e100: Intel(R) PRO/100 Network Driver, 3.5.10-k2-NAPI
e100: Copyright(c) 1999-2005 Intel Corporation

this is the lspci line:
03:08.0 Ethernet controller: Intel Corporation 82562EZ 10/100 Ethernet
Controller (rev 02)

this is the content of the dir /lrwxrwxrwx 1 root root    0 Dec  3 16:07
0000:03:08.0 -> ../../../../devices/pci0000:00/0000:00:1e.0/0000:03:08.0
--w------- 1 root root 4096 Dec  3 16:07 bind
lrwxrwxrwx 1 root root    0 Dec  3 16:07 module ->
../../../../module/pciback
--w------- 1 root root 4096 Dec  3 16:07 new_id
--w------- 1 root root 4096 Dec  3 16:07 new_slot
-rw------- 1 root root 4096 Dec  3 16:07 permissive
-rw------- 1 root root 4096 Dec  3 16:07 quirks
--w------- 1 root root 4096 Dec  3 16:07 remove_slot
-r-------- 1 root root 4096 Dec  3 16:07 slots
--w------- 1 root root 4096 Dec  3 16:07 unbindsys/bus/pci/drivers/pciback/

This is the domU confguration file:
name = "VMTEST"
memory = "256"
disk = [ ''phy:/dev/VolGroup00/VMTEST,xvda,w'', ]
vif = [ ''mac=00:16:3e:21:33:b2, bridge=xenbr0'', ]
uuid = "a1532b7c-5aa4-3eb5-a150-930402abd72f"
bootloader="/usr/bin/pygrub"
vcpus=2
on_reboot   = ''restart''
on_crash    = ''restart''
pci = [''03.08.0'']


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Mark Williamson

2007-Dec-04 02:35 UTC

head link

Re: [Xen-users] domU does not see the pci nic - pci passthrough

Hi Marco,

Everything you''ve shown looks OK as far as it goes...  Weird that the
guest
isn''t working for you.

What does lspci in the guest give?

What distro are you runing in the dom0 and domU?  Where have your Xen-enabled 
kernels come from?  Self compiled, or distro packages?  Does your domU 
definitely have an installed driver for the device?

Cheers,
Mark

On Monday 03 December 2007, Marco Strullato wrote:> Hi all!
> I want to assign a physical network card  (e100) to a domU:
> I think  Dom0 is ok but domU does not recognize the pci nic.
>
> into DomU I don''t know wath should I see: I have nothing in dmesg
nor in
> messages...
>
> Into Dom0 I have
>
> this modules.conf:
> options pciback hide=(0000:03: 08.0)
> install e100 /sbin/modprobe pciback; /sbin/modprobe --ignore-install e100
>
> This is dmesg:
> pciback 0000:03:08.0: seizing device
> ACPI: PCI Interrupt 0000:03:08.0[A] -> GSI 20 (level, low) -> IRQ 21
> ACPI: PCI interrupt for device 0000:03:08.0 disabled
> tg3.c:v3.65-rh (November 20, 2006)
> ACPI: PCI Interrupt 0000:03:09.0[A] -> GSI 21 (level, low) -> IRQ 22
> eth0: Tigon3 [partno(BCM95703A30U_HYB) rev 1100 PHY(5703)]
> (PCI:33MHz:32-bit) 10/100/1000BaseT Ethernet 00:10:18:24:d2:a6
> eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] Split[0] WireSpeed[1]
> TSOcap[1]
> eth0: dma_rwctrl[763f0000] dma_mask[64-bit]
> e100: Intel(R) PRO/100 Network Driver, 3.5.10-k2-NAPI
> e100: Copyright(c) 1999-2005 Intel Corporation
>
> this is the lspci line:
> 03:08.0 Ethernet controller: Intel Corporation 82562EZ 10/100 Ethernet
> Controller (rev 02)
>
> this is the content of the dir /lrwxrwxrwx 1 root root    0 Dec  3 16:07
> 0000:03:08.0 -> ../../../../devices/pci0000:00/0000:00:1e.0/0000:03:08.0
> --w------- 1 root root 4096 Dec  3 16:07 bind
> lrwxrwxrwx 1 root root    0 Dec  3 16:07 module ->
> ../../../../module/pciback
> --w------- 1 root root 4096 Dec  3 16:07 new_id
> --w------- 1 root root 4096 Dec  3 16:07 new_slot
> -rw------- 1 root root 4096 Dec  3 16:07 permissive
> -rw------- 1 root root 4096 Dec  3 16:07 quirks
> --w------- 1 root root 4096 Dec  3 16:07 remove_slot
> -r-------- 1 root root 4096 Dec  3 16:07 slots
> --w------- 1 root root 4096 Dec  3 16:07 unbindsys/bus/pci/drivers/pciback/
>
> This is the domU confguration file:
> name = "VMTEST"
> memory = "256"
> disk = [ ''phy:/dev/VolGroup00/VMTEST,xvda,w'', ]
> vif = [ ''mac=00:16:3e:21:33:b2, bridge=xenbr0'', ]
> uuid = "a1532b7c-5aa4-3eb5-a150-930402abd72f"
> bootloader="/usr/bin/pygrub"
> vcpus=2
> on_reboot   = ''restart''
> on_crash    = ''restart''
> pci = [''03.08.0'']


-- 
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Marco Strullato

2007-Dec-05 09:31 UTC

head link

Re: [Xen-users] domU does not see the pci nic - pci passthrough

Hi Mark,
lspci does
[root@localhost tmp]# lspci
pcilib: Cannot open /proc/bus/pci
lspci: Cannot find any working access method.

Dom0: Centos 5, 32 bit, kernel 2.6.18-8.el5xen. The /boot/config file
contains:
CONFIG_X86_XEN=y
CONFIG_XEN_PCIDEV_FRONTEND=y
CONFIG_XEN=y
CONFIG_XEN_INTERFACE_VERSION=0x00030203
CONFIG_XEN_PRIVILEGED_GUEST=y
CONFIG_XEN_PRIVCMD=y
CONFIG_XEN_XENBUS_DEV=y
CONFIG_XEN_BACKEND=y
CONFIG_XEN_BLKDEV_BACKEND=m
CONFIG_XEN_BLKDEV_TAP=m
CONFIG_XEN_NETDEV_BACKEND=m
CONFIG_XEN_NETDEV_LOOPBACK=m
CONFIG_XEN_PCIDEV_BACKEND=m
CONFIG_XEN_PCIDEV_BACKEND_VPCI=y
CONFIG_XEN_PCIDEV_BACKEND_PASS=y
CONFIG_XEN_PCIDEV_BACKEND_SLOT=y
CONFIG_XEN_BLKDEV_FRONTEND=m
CONFIG_XEN_NETDEV_FRONTEND=m
CONFIG_XEN_FRAMEBUFFER=y
CONFIG_XEN_KEYBOARD=y
CONFIG_XEN_SCRUB_PAGES=y
CONFIG_XEN_SYSFS=y
CONFIG_XEN_COMPAT_030002_AND_LATER=y
CONFIG_XEN_COMPAT_030002=y
CONFIG_XEN_UTIL=y
CONFIG_XEN_BALLOON=y
CONFIG_XEN_DEVMEM=y
CONFIG_XEN_SKBUFF=y
CONFIG_XEN_REBOOT=y
CONFIG_XEN_SMPBOOT=y


DomU: Centos 5. 32 bit, kernel 2.6.9-55.ELxenU

Each server has centos kernel.

I noticed that domU does not have the e100 module... the domU kernel is very
poor, it does not have many modules..

Regards,

Marco



2007/12/4, Mark Williamson
<mark.williamson@cl.cam.ac.uk>:>
> Hi Ma


rco,>
> Everything you''ve shown looks OK as far as it goes...  Weird that
the
> guest
> isn''t working for you.
>
> What does lspci in the guest give?
>
> What distro are you runing in the dom0 and domU?  Where have your
> Xen-enabled
> kernels come from?  Self compiled, or distro packages?  Does your domU
> definitely have an installed driver for the device?
>
> Cheers,
> Mark
>
> On Monday 03 December 2007, Marco Strullato wrote:
> > Hi all!
> > I want to assign a physical network card  (e100) to a domU:
> > I think  Dom0 is ok but domU does not recognize the pci nic.
> >
> > into DomU I don''t know wath should I see: I have nothing in
dmesg nor in
> > messages...
> >
> > Into Dom0 I have
> >
> > this modules.conf:
> > options pciback hide=(0000:03: 08.0)
> > install e100 /sbin/modprobe pciback; /sbin/modprobe --ignore-install
> e100
> >
> > This is dmesg:
> > pciback 0000:03:08.0: seizing device
> > ACPI: PCI Interrupt 0000:03:08.0[A] -> GSI 20 (level, low) ->
IRQ 21
> > ACPI: PCI interrupt for device 0000:03:08.0 disabled
> > tg3.c:v3.65-rh (November 20, 2006)
> > ACPI: PCI Interrupt 0000:03:09.0[A] -> GSI 21 (level, low) ->
IRQ 22
> > eth0: Tigon3 [partno(BCM95703A30U_HYB) rev 1100 PHY(5703)]
> > (PCI:33MHz:32-bit) 10/100/1000BaseT Ethernet 00:10:18:24:d2:a6
> > eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] Split[0] WireSpeed[1]
> > TSOcap[1]
> > eth0: dma_rwctrl[763f0000] dma_mask[64-bit]
> > e100: Intel(R) PRO/100 Network Driver, 3.5.10-k2-NAPI
> > e100: Copyright(c) 1999-2005 Intel Corporation
> >
> > this is the lspci line:
> > 03:08.0 Ethernet controller: Intel Corporation 82562EZ 10/100 Ethernet
> > Controller (rev 02)
> >
> > this is the content of the dir /lrwxrwxrwx 1 root root    0 Dec  3
16:07
> > 0000:03:08.0 ->
../../../../devices/pci0000:00/0000:00:1e.0/0000:03:08.0
> > --w------- 1 root root 4096 Dec  3 16:07 bind
> > lrwxrwxrwx 1 root root    0 Dec  3 16:07 module ->
> > ../../../../module/pciback
> > --w------- 1 root root 4096 Dec  3 16:07 new_id
> > --w------- 1 root root 4096 Dec  3 16:07 new_slot
> > -rw------- 1 root root 4096 Dec  3 16:07 permissive
> > -rw------- 1 root root 4096 Dec  3 16:07 quirks
> > --w------- 1 root root 4096 Dec  3 16:07 remove_slot
> > -r-------- 1 root root 4096 Dec  3 16:07 slots
> > --w------- 1 root root 4096 Dec  3 16:07
> unbindsys/bus/pci/drivers/pciback/
> >
> > This is the domU confguration file:
> > name = "VMTEST"
> > memory = "256"
> > disk = [ ''phy:/dev/VolGroup00/VMTEST,xvda,w'', ]
> > vif = [ ''mac=00:16:3e:21:33:b2, bridge=xenbr0'', ]
> > uuid = "a1532b7c-5aa4-3eb5-a150-930402abd72f"
> > bootloader="/usr/bin/pygrub"
> > vcpus=2
> > on_reboot   = ''restart''
> > on_crash    = ''restart''
> > pci = [''03.08.0'']
>
>
>
> --
> Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
> Mark: To answer a question with a question: What use is a skateboard?
> Dave: Skateboards have wheels.
> Mark: My wheel has a wheel!
>

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Sadique Puthen

2007-Dec-05 12:09 UTC

head link

Re: [Xen-users] domU does not see the pci nic - pci passthrough

Marco Strullato wrote:> Hi Mark,
> lspci does
> [root@localhost tmp]# lspci
> pcilib: Cannot open /proc/bus/pci
> lspci: Cannot find any working access method.
>
> Dom0: Centos 5, 32 bit, kernel 2.6.18-8.el5xen. The /boot/config file 
> contains:
> CONFIG_X86_XEN=y
> CONFIG_XEN_PCIDEV_FRONTEND=y
> CONFIG_XEN=y
> CONFIG_XEN_INTERFACE_VERSION=0x00030203
> CONFIG_XEN_PRIVILEGED_GUEST=y
> CONFIG_XEN_PRIVCMD=y
> CONFIG_XEN_XENBUS_DEV=y
> CONFIG_XEN_BACKEND=y
> CONFIG_XEN_BLKDEV_BACKEND=m
> CONFIG_XEN_BLKDEV_TAP=m
> CONFIG_XEN_NETDEV_BACKEND=m
> CONFIG_XEN_NETDEV_LOOPBACK=m
> CONFIG_XEN_PCIDEV_BACKEND=m
> CONFIG_XEN_PCIDEV_BACKEND_VPCI=y
> CONFIG_XEN_PCIDEV_BACKEND_PASS=y
> CONFIG_XEN_PCIDEV_BACKEND_SLOT=y
> CONFIG_XEN_BLKDEV_FRONTEND=m
> CONFIG_XEN_NETDEV_FRONTEND=m
> CONFIG_XEN_FRAMEBUFFER=y
> CONFIG_XEN_KEYBOARD=y
> CONFIG_XEN_SCRUB_PAGES=y
> CONFIG_XEN_SYSFS=y
> CONFIG_XEN_COMPAT_030002_AND_LATER=y
> CONFIG_XEN_COMPAT_030002=y
> CONFIG_XEN_UTIL=y
> CONFIG_XEN_BALLOON=y
> CONFIG_XEN_DEVMEM=y
> CONFIG_XEN_SKBUFF=y
> CONFIG_XEN_REBOOT=y
> CONFIG_XEN_SMPBOOT=y
>
>
> DomU: Centos 5. 32 bit, kernel 2.6.9-55.ELxenU
>
> Each server has centos kernel.
>
> I noticed that domU does not have the e100 module... the domU kernel 
> is very poor, it does not have many modules..
I always have e100 module in my RHEL5 xen kernel.

[root@dhcp6-102 ~]# find /lib/modules/2.6.18-53.el5xen/| grep e100
/lib/modules/2.6.18-53.el5xen/kernel/drivers/net/e1000
/lib/modules/2.6.18-53.el5xen/kernel/drivers/net/e1000/e1000.ko
/lib/modules/2.6.18-53.el5xen/kernel/drivers/net/e1000e
/lib/modules/2.6.18-53.el5xen/kernel/drivers/net/e1000e/e1000e.ko
/lib/modules/2.6.18-53.el5xen/kernel/drivers/net/e100.ko

[root@dhcp6-102 ~]# find /lib/modules/2.6.18-8.el5xen/| grep e100
/lib/modules/2.6.18-8.el5xen/kernel/drivers/net/e1000
/lib/modules/2.6.18-8.el5xen/kernel/drivers/net/e1000/e1000.ko
/lib/modules/2.6.18-8.el5xen/kernel/drivers/net/e100.ko

Your problem is something else. On successful pci passthrough, your domU 
should list your pci card in the lspci output regardless of the 
availability of e100 module in the xen kernel.

--Sadique
>
> Regards,
>
> Marco
>
>
>
> 2007/12/4, Mark Williamson <mark.williamson@cl.cam.ac.uk 
> <mailto:mark.williamson@cl.cam.ac.uk>>:
>
>     Hi Ma
>
>  
>
>     rco,
>
>     Everything you''ve shown looks OK as far as it goes...  Weird
that
>     the guest
>     isn''t working for you.
>
>     What does lspci in the guest give?
>
>     What distro are you runing in the dom0 and domU?  Where have your
>     Xen-enabled
>     kernels come from?  Self compiled, or distro packages?  Does your
>     domU
>     definitely have an installed driver for the device?
>
>     Cheers,
>     Mark
>
>     On Monday 03 December 2007, Marco Strullato wrote:
>     > Hi all!
>     > I want to assign a physical network card  (e100) to a domU:
>     > I think  Dom0 is ok but domU does not recognize the pci nic.
>     >
>     > into DomU I don''t know wath should I see: I have nothing
in
>     dmesg nor in
>     > messages...
>     >
>     > Into Dom0 I have
>     >
>     > this modules.conf:
>     > options pciback hide=(0000:03: 08.0)
>     > install e100 /sbin/modprobe pciback; /sbin/modprobe
>     --ignore-install e100
>     >
>     > This is dmesg:
>     > pciback 0000:03:08.0: seizing device
>     > ACPI: PCI Interrupt 0000:03:08.0[A] -> GSI 20 (level, low)
-> IRQ 21
>     > ACPI: PCI interrupt for device 0000:03:08.0 disabled
>     > tg3.c:v3.65-rh (November 20, 2006)
>     > ACPI: PCI Interrupt 0000:03: 09.0[A] -> GSI 21 (level, low)
->
>     IRQ 22
>     > eth0: Tigon3 [partno(BCM95703A30U_HYB) rev 1100 PHY(5703)]
>     > (PCI:33MHz:32-bit) 10/100/1000BaseT Ethernet 00:10:18:24:d2:a6
>     > eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] Split[0]
>     WireSpeed[1]
>     > TSOcap[1]
>     > eth0: dma_rwctrl[763f0000] dma_mask[64-bit]
>     > e100: Intel(R) PRO/100 Network Driver, 3.5.10-k2-NAPI
>     > e100: Copyright(c) 1999-2005 Intel Corporation
>     >
>     > this is the lspci line:
>     > 03:08.0 Ethernet controller: Intel Corporation 82562EZ 10/100
>     Ethernet
>     > Controller (rev 02)
>     >
>     > this is the content of the dir /lrwxrwxrwx 1 root root    0
>     Dec  3 16:07
>     > 0000:03:08.0 -> ../../../../devices/pci0000:00/0000:00:
>     1e.0/0000:03:08.0
>     > --w------- 1 root root 4096 Dec  3 16:07 bind
>     > lrwxrwxrwx 1 root root    0 Dec  3 16:07 module ->
>     > ../../../../module/pciback
>     > --w------- 1 root root 4096 Dec  3 16:07 new_id
>     > --w------- 1 root root 4096 Dec  3 16:07 new_slot
>     > -rw------- 1 root root 4096 Dec  3 16:07 permissive
>     > -rw------- 1 root root 4096 Dec  3 16:07 quirks
>     > --w------- 1 root root 4096 Dec  3 16:07 remove_slot
>     > -r-------- 1 root root 4096 Dec  3 16:07 slots
>     > --w------- 1 root root 4096 Dec  3 16:07
>     unbindsys/bus/pci/drivers/pciback/
>     >
>     > This is the domU confguration file:
>     > name = "VMTEST"
>     > memory = "256"
>     > disk = [ ''phy:/dev/VolGroup00/VMTEST,xvda,w'', ]
>     > vif = [ ''mac=00:16:3e:21:33:b2, bridge=xenbr0'',
]
>     > uuid = "a1532b7c-5aa4-3eb5-a150-930402abd72f"
>     > bootloader="/usr/bin/pygrub"
>     > vcpus=2
>     > on_reboot   = ''restart''
>     > on_crash    = ''restart''
>     > pci = [''03.08.0'']
>
>
>
>     --
>     Dave: Just a question. What use is a unicyle with no seat?  And no
>     pedals!
>     Mark: To answer a question with a question: What use is a skateboard?
>     Dave: Skateboards have wheels.
>     Mark: My wheel has a wheel!
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users

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