Re: [PATCH 2/2] ixgbe: set driver_max_VFs should be done beforeenabling SRIOV

From: Jeff Kirsher
Date: Fri Dec 27 2013 - 04:03:59 EST


On Wed, 2013-12-25 at 00:07 +0800, Ethan Zhao wrote:
> commit 43dc4e01 Limit number of reported VFs to device specific value
> It doesn't work and always returns -EBUSY because VFs ware already
> enabled.
>
> ixgbe_enable_sriov()
> pci_enable_sriov()
> sriov_enable()
> {
> ... ..
> iov->ctrl |= PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE;
> pci_cfg_access_lock(dev);
> ... ...
> }
>
> pci_sriov_set_totalvfs()
> {
> ... ...
> if (dev->sriov->ctrl & PCI_SRIOV_CTRL_VFE)
> return -EBUSY;
> ...
> }
>
> So should set driver_max_VFs with pci_sriov_set_totalvfs() before
> enable VFs with ixgbe_enable_sriov().
>
> Signed-off-by: Ethan Zhao <ethan.kernel@xxxxxxxxx>
> ---
> drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

Thanks Ethan, I have added this patch as well to my queue.

Attachment: signature.asc
Description: This is a digitally signed message part