[+cc Alex, Alex, Jeff, Liang-Min, kvm, LKML] Anybody else have any thoughts on this?
On Wed, Dec 13, 2017 at 02:05:33PM +0100, Maximilian Heyne wrote: > Currently, SR-IOV VFs can only be configured through sysfs, if a driver > is loaded for the device. Sometimes we don't care about the PF, but only > want to assign VFs to guests, which is now possible with this patch. > > Signed-off-by: Maximilian Heyne <[email protected]> > --- > drivers/pci/pci-stub.c | 23 ++++++++++++++++++++--- > 1 file changed, 20 insertions(+), 3 deletions(-) > > diff --git a/drivers/pci/pci-stub.c b/drivers/pci/pci-stub.c > index 886fb35..aa007c3 100644 > --- a/drivers/pci/pci-stub.c > +++ b/drivers/pci/pci-stub.c > @@ -32,10 +32,27 @@ static int pci_stub_probe(struct pci_dev *dev, const > struct pci_device_id *id) > return 0; > } > > +static void pci_stub_remove(struct pci_dev *dev) > +{ > + pci_disable_sriov(dev); > +} > + > +static int pci_stub_sriov_configure(struct pci_dev *dev, int num_vfs) > +{ > + if (!num_vfs) { > + pci_disable_sriov(dev); > + return 0; > + } > + > + return pci_enable_sriov(dev, num_vfs); > +} > + > static struct pci_driver stub_driver = { > - .name = "pci-stub", > - .id_table = NULL, /* only dynamic id's */ > - .probe = pci_stub_probe, > + .name = "pci-stub", > + .id_table = NULL, /* only dynamic IDs */ > + .probe = pci_stub_probe, > + .remove = pci_stub_remove, > + .sriov_configure = pci_stub_sriov_configure, > }; > > static int __init pci_stub_init(void) > -- > 2.7.4 >
