Comment 12 for bug 1384892

I made some time for limited testing.
The released V2.1 puts the vfio-ed RTL8168 into a zombie state when running an IPFire VM, which requires a subsequent POWER cycle in order to let mii-tools show anything else than 'no link' (i.e. to get the LED back on). Pushing the reset button on the x64 metal was NOT enough.

Then I binary-patched my V2.1 qemu x64 executable so it compares against a 'wrong' PCI ID inside vfio_probe_rtl8168_bar2_window_quirk() (to confirm comment #3). Yes, that made it work again.

Further patch-attempts towards comment #10 all ended up in RTL zombie state (even though the IPFire VM was otherwise responsive). Each time a power cycle was required to get the RTL back alive.

Could there be a general problem because the RTL must be usable in MSI-X mode for Windows and in in MSI mode for Linux ?
Maybe a cmdline switch should be added to activate the quirk just when MSI-X is intended ?