Re: [PATCH] xen-pciback: drop SR-IOV VFs when PF driver unloads

[Konrad Rzeszutek Wilk]

On Thu, Nov 06, 2014 at 03:05:51PM +0000, Jan Beulich wrote:
> When a PF driver unloads, it may find it necessary to leave the VFs
> around simply because of pciback having marked them as assigned to a
> guest. Utilize a suitable notification to let go of the VFs, thus
> allowing the PF to go back into the state it was before its driver
> loaded (which in particular allows the driver to be loaded again with
> it being able to create the VFs anew, but which also allows to then
> pass through the PF instead of the VFs).
> 
> Don't do this however for any VFs currently in active use by a guest.

I rewrote it a bit to be more in the style of pciback: