Thank you for your reply.
I just followed all the corrections and run your rom-fixer and found that a VGA-configured-as-primary VBIOS dump did work after modifying device id from 0406 to the actual id. Best regards, On Apr 19, 2018, at 12:10 PM, Alex Williamson <alex.william...@redhat.com> wrote: On Thu, 19 Apr 2018 02:59:57 +0000 (GMT) Chen Zhang <tgfb...@icloud.com> wrote: The arguments for kvm (qemu-2.10.1): /usr/local/bin/qemu-system-x86_64 -name vm1 \ -nodefaults \ -machine pc,igd-passthru=on,accel=kvm,usb=off \ igd-passthru=on is only a Xen option, the QEMU help should be fixed to clarify this. -global PIIX4_PM.disable_s4=0 \ -global PIIX4_PM.disable_s3=1 \ -global ICH9-LPC.disable_s3=1 \ -global ICH9-LPC.disable_s4=0 \ You don't have both of these, ICH9 is only on the Q35 machine types and PIIX4 is only on the 440FX machine types. -enable-kvm -rtc base=localtime \ -nographic -vga none \ -m 3000m -realtime mlock=off -smp 4,sockets=1,cores=2 \ -device vfio-pci,host=00:02.0,id=hostdev0,bus=pci.0,addr=0x2,x-vga=on,x-igd-gms=6,romfile=/root/vbios1 \ x-vga=on is unnecessary when using legacy igd assignment, no harm though. IGD ROMs dumped via the method you linked generally include the wrong device ID and have a bad checksum, you can use my rom-fixer tool to correct those: https://github.com/awilliam/rom-parser This could be the cause for no output from SeaBIOS, but I have no idea if your OPS display output adds additional hurdles. -drive file=/root/disks/test.img,media=disk,if=none,id=drive-c \ -device ide-hd,bus=ide.0,unit=0,drive=drive-c,bootindex=0 \ -no-user-config \ -cpu host,kvm=off kvm=off is only necessary for NVIDIA GeForce assignment. Thanks, Alex _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
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