RE: [Xen-users] Simple Query on PCI passthrough I/O

["Nadolski, Ed" <Ed.Nadolski@xxxxxxx>]

> > > * You need to be running a dom0 kernel in the guest with the PCI
card.
> >
> > Whoa! I did not know this either. Again what are the reasons? Kindly
let > me
> > know.
>
> Regarding the kernel version.  You don't necessarily need to be
> running the same kernel as dom0.  But you do need to be running
> a dom0-capable kernel because domU-only kernels lack hardware support.

Hmm, I thought that meant the domU kernel had to run the pcifront driver
plus the native driver for the PCI device.  Is that right or have I
missed something?

Is there a way to tell if the domU is actually running pcifront?  My
/boot/config-2.6.18-53.el5xen shows CONFIG_XEN_PCIDEV_FRONTEND=y, but is
there a way to verify that it is actually in the running kernel?

Thanks,
Ed


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