Here are the exact steps I used:
1. lspci -n on host:
06:00.0 0c06: 15b3:634a (rev a0)
I want to assign this device to guest.
2. Uninstall driver for this device.
3. Unbind device with the following commands:
echo "15b3 634a"> /sys/bus/pci/drivers/pci-stub/new_id
echo 0000:06:00.0> /sys/bus/pci/devices/0000:06:00.0/driver/unbind
echo 0000:06:00.0> /sys/bus/pci/drivers/pci-stub/bind
4. start guest with... -pcidevice host=06:00.0
5. Guest os detects device with lspci command but failed to start.
lspci -tv on host:(last device here is what i want to assign)
-[0000:00]-+-01.0-[0000:03-04]--+-0d.0-[0000:04]--
| \-0e.0 Broadcom BCM5785 [HT1000] SATA (PATA/IDE Mode)
+-02.0 Broadcom BCM5785 [HT1000] Legacy South Bridge
+-02.1 Broadcom BCM5785 [HT1000] IDE
+-02.2 Broadcom BCM5785 [HT1000] LPC
+-03.0 Broadcom BCM5785 [HT1000] USB
+-03.1 Broadcom BCM5785 [HT1000] USB
+-03.2 Broadcom BCM5785 [HT1000] USB
+-04.0 ATI Technologies Inc ES1000
+-07.0-[0000:05]--
+-08.0-[0000:01]----00.0 Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express
+-09.0-[0000:02]----00.0 Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express
+-0a.0-[0000:06]----00.0 Mellanox Technologies MT25418 [ConnectX IB DDR]
lspci -vvv: (only related portion)
06:00.0 InfiniBand: Mellanox Technologies MT25418 [ConnectX IB DDR] (rev a0)
Subsystem: Mellanox Technologies Unknown device 0007
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast>TAbort- SERR- Date: Fri, 3 Apr 2009 10:13:22 -0700
> From: chrisw@xxxxxxxxxxxx
> To: ericliu2008@xxxxxxxxxxx
> CC: kvm@xxxxxxxxxxxxxxx
> Subject: Re: PCI device assignment to Guest
>
> * Eric Liu (ericliu2008@xxxxxxxxxxx) wrote:
>> Anyone has experience to assign PCI-E based InfiniBand card to
>> guest OS(RHEL5U2 with kernel 2.6.18-92) on latest AMD with IOMMU
>> support. Host OS has kernel 2.6.29.
>>
>> Steps I used:
>>
>> $> echo -n "8086 10de"> /sys/bus/pci/drivers/pci-stub/new_id
>> $> echo -n 0000:00:19.0> /sys/bus/pci/drivers/e1000e/unbind
>> $> echo -n 0000:00:19.0> /sys/bus/pci/drivers/pci-stub/bind
>
> The steps above are specific to an e1000e device.
>
>> Then
>> I started guest with -pcidevice host=id. After guest is started, it
>> successfully detected pci device with lspci command, however kernel
>> can't bring up the device. dmesg shows infiniband kernel module can't
>> detect infiniband card firmware properly then aborted. I think it is
>> KVM issue rather than infiniband kernel module issue. Can anyone
>> suggest?
>
> Sounds like you may have two drivers for this device.
>
> Can you include (on the host) lspci -tv and lspci -vvv?
>
> thanks,
> -chris
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