Hi, I'm trying to configure kvm to single passthrough IGD (i5-7200U with HD620) in legacy mode on a headless laptop. I extracted the vbios.rom and checked device ID (5916) and checksum with rom-parser tools
intel i915 modules are blacklisted and vfio options are setted like that : options vfio-pci ids=8086:5916 disable_vga=1 I tried to fulfill all the conditions of the igd-assign.txt legacy mode from the qemu project but I still failing to success, monitor stays black with no output. using qemu with pc-i440fx-5.1 : qemu-system-x86_64 \ -machine pc \ -cpu host,kvm=off -smp cores=2,threads=1 -enable-kvm \ -boot d -cdrom /tmp/debian-10.6.0-amd64-netinst.iso \ -m 4G \ -vga none -nographic \ -nodefaults \ -device vfio-pci-igd-lpc-bridge,id=vfio-pci-igd-lpc-bridge0,bus=pci.0,addr=1f.0 \ -device vfio-pci,host=00:02.0,x-igd-gms=2,id=hostdev0,bus=pci.0,addr=0x2,x-igd-opregion=on,romfile=/tmp/vbios_8086_5916.rom here are the errors that I cannot fix : qemu-system-x86_64: -device vfio-pci,host=00:02.0,x-igd-gms=6,id=hostdev0,bus=pci.0,addr=0x2,x-igd-opregion=on,romfile=/home/user/vbios_8086_5916_origin.rom: vfio 0000:00:02.0: failed getting region info for VGA region index 8: Invalid argument => is VGA region 8 valid ? qemu-system-x86_64: -device vfio-pci,host=00:02.0,x-igd-gms=6,id=hostdev0,bus=pci.0,addr=0x2,x-igd-opregion=on,romfile=/home/user/vbios_8086_5916_origin.rom: IGD device 0000:00:02.0 failed to enable VGA access, legacy mode disabled And syslog shows errors : vfio-pci 0000:00:02.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0xffff resource sanity check: requesting [mem 0x000c0000-0x000dffff], which spans more than PCI Bus 0000:00 [mem 0x000c0000-0x000c3fff window] caller pci_map_rom+0x7c/0x1d0 mapping multiple BARs What am I doing wrong ? single gpu passthrough from a headless laptop seems to be possible.
_______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
