>From <https://www.redhat.com/archives/libvir-list/2014-April/msg00222.html>, it looks like reasonably recent kernels have `driver_override` entry on the PCI device. I can confirm that my kernel has driver_override, but not preferred_driver.
>From your example, it'd be: echo vfio-pci >/sys/bus/pci/devices/0000:09:00.0/driver_override echo 0000:09:00.0 >/sys/bus/pci/devices/0000:09:00.0/unbind echo 0000:09:00.0 >/sys/bus/pci/drivers_probe Or you should be able to use /sys/bus/pci/drivers/vfio-pci/bind to explicitly bind the device echo 0000:09:00.0 >/sys/bus/pci/drivers/vfio-pci/bind On Sun, 19 May 2019 at 18:32, James Courtier-Dutton <james.dut...@gmail.com> wrote: > Hi, > > I have a PC with two identical GPUs. > One I wish to hand over to vfio and do passthru with, the other I wish the > host to use. > I know about commands like: > echo 1002 687f >/sys/bus/pci/drivers/vfio-pci/new_id > > But those will cause both GPUs to be claimed by vfio. > I would prefer to do it by slot, e.g. echo 09:00.0 > >/sys/bus/pci/drivers/vfio-pci/new_id > But, I cannot see how to do it by slot instead of PCI-ID. > > Any clues? > > Kind Regards > > James > > _______________________________________________ > vfio-users mailing list > vfio-users@redhat.com > https://www.redhat.com/mailman/listinfo/vfio-users >
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