On Wed, Apr 25, 2018 at 04:53:51PM -0400, Sinan Kaya wrote:

Hi Greg,

Upstream commit 028daf801173 ("i40e: Fix attach VF to VM issue") fixes a virtualization issue for i40e based adapters.

problem description below from the commit:

'Fix for "Resource temporarily unavailable" problem when virsh is trying to attach a device to VM. When the VF driver is loaded on host and virsh is trying to attach it to the VM and set a MAC address, it ends with a race condition between i40e_reset_vf and i40e_ndo_set_vf_mac functions. The bug is fixed by adding polling in i40e_ndo_set_vf_mac function For when the VF is in Reset mode.'

Please apply commit 028daf801173 to fix the resulting regression.

Applied to both 4.14.y and 4.16.y.

thanks,

greg k-h