The VM works until I try to add a Nvidia card as a second GPU.   This line fills the syslog:   Sep 20 21:34:09 rack kernel: vfio-pci 0000:65:00.0: BAR 1: can't reserve [mem 0x38bfe0000000-0x38bfefffffff 64bit pref] rack-diagnostics-20190921-0449.zip