Early 2012 i tested the old vga passthrough capabilities of KVM and was partly successful. now with the new vfio driver i tried again according to alex's hints and this guide: https://bbs.archlinux.org/viewtopic.php?id=162768
since im primarily using ubuntu i used the daily build of saucy. it ships qemu 1.5 and seabios 1.7.3 so the requirements are met. according to the guide i prepared the vga card (amd 7870) [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-3.10.0-2-generic root=UUID=26fed560-a972-499d-ab14-7fec6439fd3d ro intel_iommu=on pci-stub.ids=1002:6818,1002:aab0 quiet splash vt.handoff=7 [ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.10.0-2-generic root=UUID=26fed560-a972-499d-ab14-7fec6439fd3d ro intel_iommu=on pci-stub.ids=1002:6818,1002:aab0 quiet splash vt.handoff=7 [ 0.569977] pci-stub: add 1002:6818 sub=FFFFFFFF:FFFFFFFF cls=00000000/00000000 [ 0.569987] pci-stub 0000:01:00.0: claimed by stub [ 0.569994] pci-stub: add 1002:AAB0 sub=FFFFFFFF:FFFFFFFF cls=00000000/00000000 [ 0.569998] pci-stub 0000:01:00.1: claimed by stub then did this just to be sure: echo "options vfio_iommu_type1 allow_unsafe_interrupts=1" > /etc/modprobe.d/vfio_iommu_type1.conf (or was that wrong?) im using a z87 haswell mainboard after that i binded the two devices to vfio-pci with: vfio-bind 0000:01:00.0 0000:01:00.1 (the script in the guide) afterwards i was able to start the kvm with qemu-system-x86_64 -enable-kvm -M q35 -m 8192 -cpu host \ -smp 8,sockets=1,cores=4,threads=8 \ -bios /usr/share/qemu/bios.bin -vga none \ -device ioh3420,bus=pcie.0,addr=1c.0,multifunction=on,port=1,chassis=1,id=root.1 \ -device vfio-pci,host=01:00.0,bus=root.1,addr=00.0,multifunction=on,x-vga=on \ -device vfio-pci,host=01:00.1,bus=root.1,addr=00.1 \ -device ahci,bus=pcie.0,id=ahci \ -drive file=/home/martin/windows.img,if=none,id=disk,format=raw -device virtio-blk-pci,drive=disk \ -drive file=/home/martin/X17-59885.iso,id=isocd -device ide-cd,bus=ahci.0,drive=isocd \ -net nic,model=virtio \ -net user \ -usb -usbdevice host:1532:000c \ -drive file=/home/martin/Downloads/virtio-win-0.1-59.iso,id=isocd1 -device ide-cd,bus=ahci.1,drive=isocd1 to my surprise i instantly got the windows installation running installed the virtio drivers for nic and storage and had 15 mins later a working win7 installation. now i installed the amd driver (13.4) and rebooted. i got a bluescreen. similar to my old expiriences so i thought do a clean host reboot and try again. but still the same. so i tried to load the bios.rom for the card (found it on techpowerup) again no luck. maybe someone knows a hint? ------- about qemu bridge i tried to set up a bridge with the config but qemu always told me that qemu-bridge-helper is not present. all i found out that it propably got removed from the package because of the lack of control over the tap devices. now my question how can i still bridge the vm into my network without that helper? -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
