On Wed, 2012-11-28 at 16:32 +0000, Krishna J wrote:
> Hi Alex,
> I am trying to pass through a PCI device to the guest to compare the
> MSI interrupt latency with normal device pass through and pass through
> using VFIO framework. I used the following script
>
> for dev in $(ls /sys/bus/pci/devices/0000:06:00.0/iommu_group/devices); do
> vendor=$(cat /sys/bus/pci/devices/$dev/vendor)
> device=$(cat /sys/bus/pci/devices/$dev/device)
> if [ -e /sys/bus/pci/devices/$dev/driver ]; then
> echo $dev > /sys/bus/pci/devices/$dev/driver/unbind
> fi
> echo $vendor $device > /sys/bus/pci/drivers/vfio-pci/new_id
> done
>
> and added "-device vfio-pci,host,host=0000:06:00.0" to my qemu command line.
^^^^^
> I am getting Error - qemu-system-x86_64: -device
> vfio-pci,host,host=0000:06:00.0: Property 'vfio-pci.host' doesn't take
> value 'on'-- when i use the qemu for your git repo and and also the
> latest v1.3.0-rc1 qemu. I am using Kernel 3.6.7-rt18. Am i missing
> step ?
Hi Krishna,
There's an extra "host," in the option above, is that the problem?
Please let me know if I've mis-documented it anywhere. I hope you can
share your results when you get it working. Thanks,
Alex
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