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xen-devel
RE: [Xen-devel] pci hotplug in xcp
> On Wed, 7 Apr 2010, Ritu kaur wrote:
> > xl pci-attach doesn't seem to work unless vm is rebooted. Steps followed
> >
> > 1. modprobe pciback on dom0
>
> did you bind the device to pciback before executing "xl pci-attach"?
> xl doesn't do it for you.
> Beside you need to add -priv to the qemu command line options and to do
> that you need to edit /opt/xensource/libexec/qemu-dm-wrapper for example
> adding
>
> qemu_args.append("-priv")
>
> right after
>
> qemu_args.append("pty")
>
> sorry for not mentioning this before :)
If you want to use hotplug rather than static assignment, you should make sure
that the guest has a "pci" key (even an empty one) as this causes xapi to take
care of setting the guest up for PCI passthrough, so you don't have to manually
edit anything. E.g.:
xe vm-param-set other-config:pci="" uuid=$VMUUID
Ian
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