Re: [PATCH v3 12/12] vfio/pci: Report dev_id in VFIO_DEVICE_GET_PCI_HOT_RESET_INFO

Jason Gunthorpe
2023-04-11T13:34:37Z

On Sun, Apr 09, 2023 at 07:29:51AM -0600, Alex Williamson wrote:

> > struct vfio_device_info_cap_pci_bdf {
> > struct vfio_info_cap_header header;
> > __u32 group_id;
> > __u16 segment;
> > __u8 bus;
> > __u8 devfn; /* Use PCI_SLOT/PCI_FUNC */
> > };
> >
>
> Group-id and bdf should be separate capabilities, all device should
> report a group-id capability and only PCI devices a bdf capability.

Group should be reported by iommufd using a generic ioctl, and not be
part of VFIO.

This should report BDF only and only work for PCI.

Jason