[+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 <mheyne@xxxxxxxxx>
> ---
> 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
>
