> From: Intel-wired-lan [mailto:[email protected]] On > Behalf Of Alex Williamson > Sent: Monday, July 27, 2015 4:19 PM > To: [email protected]; Kirsher, Jeffrey T > Cc: [email protected]; [email protected] > Subject: [Intel-wired-lan] [PATCH 1/2] igb: Teardown SR-IOV before > unregister_netdev() > > When the .remove() callback for a PF is called, SR-IOV support for the > device is disabled, which requires unbinding and removing the VFs. > The VFs may be in-use either by the host kernel or userspace, such as > assigned to a VM through vfio-pci. In this latter case, the VFs may > be removed either by shutting down the VM or hot-unplugging the > devices from the VM. Unfortunately in the case of a Windows 2012 R2 > guest, hot-unplug is broken due to the ordering of the PF driver > teardown. Disabling SR-IOV prior to unregister_netdev() avoids this > issue. > > Signed-off-by: Alex Williamson <[email protected]> > --- > drivers/net/ethernet/intel/igb/igb_main.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-)
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