On Tue, 2018-03-13 at 09:54 +0100, Christoph Hellwig wrote:

On Tue, Mar 13, 2018 at 08:45:19AM +0000, David Woodhouse wrote:
Because binding to pci-stub means that you'd now enable the simple
SR-IOV for any device bound to PCI stub.  Which often might be the wrong
thing.

No, *using* it would be the wrong thing (bad root; no biscuit).

Except when the PF doesn't have SR-IOV capability anyway, in which case
who cares.

Or when the PF does have SR-IOV capability and root has ensure that
she's doing the right thing.

I understand the arguments about disallowing root from doing bad
things. Not that I agree with them. But simply changing to a
*different* driver seems pointless.