(generally a good idea to have a useful subject line) On Mon, 17 Oct 2016 16:26:15 -0500 Kevin Vasko <kva...@gmail.com> wrote: > > Any suggestions on debugging a !!! Unknown header type 7f? >
This usually means that the device didn't come back from bus reset and re-reading the PCI config space where the device was just gives a -1 response. lspci tries to interpret that bogus data and gives results like you see. You might try a newer kernel, we've probably fixed some things in the bus reset path since v3.19. It looks like you continue to see the bogus data once it gets into this state, so it's probably not a "simple" device coming out of reset too slowly problem. Possibly the PCIe link doesn't retrain properly sometimes after a bus reset. If a new kernel doesn't help, I could give you instructions for performing a bus reset with setpci and you could test how reliably you can reset the device and read config space after. Thanks, Alex _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
