On Wed, Sep 22, 2021 at 11:45:33PM +0000, Tian, Kevin wrote: > > From: Alex Williamson <alex.williamson@xxxxxxxxxx> > btw I realized another related piece regarding to the new layout that > Jason suggested, which have sys device node include a link to the vfio > devnode: > > /sys/bus/pci/devices/DDDD:BB:DD.F/vfio/vfioX/dev > > This for sure requires specific vfio driver support to get the link > established. It doesn't. Just set the parent device of the vfio_device's struct device to the physical struct device that vfio is already tracking - ie the struct device providing the IOMMU. The driver core takes care of everything else. Jason
