Re: [PATCH 09/11] PCI: add matching checks for driver_override binding

From: Jason Gunthorpe
Date: Wed Jun 16 2021 - 19:56:30 EST


On Thu, Jun 17, 2021 at 02:51:09AM +0300, Max Gurtovoy wrote:
>
> On 6/17/2021 2:44 AM, Jason Gunthorpe wrote:
> > On Thu, Jun 17, 2021 at 02:42:46AM +0300, Max Gurtovoy wrote:
> >
> > > Do you see a reason not adding this alias for stub drivers but
> > > adding it to vfio_pci drivers ?
> > It creates uABI without a userspace user and that is strongly
> > discouraged. The 'stub_pci:' prefix becomes fixed ABI.
> so is it better to have "pci:v*d*sv*sd*bc*sc*i*" for stub drivers ?

No, we don't want to convey any new information about stub drivers to
userspace.

> or not adding alias at all if stub flag is set ?

Yes, just don't change it at all, IMHO.

Jason