Re: [PATCH v2 10/10] vfio/pci: Add VFIO_DEVICE_GET_PCI_HOT_RESET_GROUP_INFO

Jason Gunthorpe
2023-03-30T23:18:27Z

On Thu, Mar 30, 2023 at 05:05:31PM -0600, Alex Williamson wrote:
> > I suggest to check for VFIO_PCI_HOT_RESET_FLAG_IOMMUFD_DEV_ID on input
> > as well. I know the old kernels don't enforce this but at least we
> > could start enforcing it going forward so that the group path would
> > reject it to catch userspace bugs.
> >
> > May as well fix it up to fully validate the flags
>
> Is this under the guise of "if nobody complains it's ok, otherwise
> revert" plan?

Yah, assuming people don't pass in uninited structs.

Jason