I just started over because of several small glitches that came from constantly reinstalling qemu. im still using saucy 13.10 alpha for the tests with a modified ubuntu kernel (with alex patch) and since i found out that the patches of alex are now pulled into qemu 1.6 i chose to use qemu git. after some perparation (apt-get build-depends qemu) i configured qemu with (./configure --target-list=x86_64-softmmu) and installed it to /usr/local. when i wanted to start qemu-system-x64 the screen connected to the 7870 still did not start (the usb devices were instantly pulled so something must have happened). then i tried the seabios supplied by ubuntu(1.7.3), then the screen went on , but after the driver installation i got a bluescreen connected to the ati driver again. regards martin Am 17.07.2013 07:05, schrieb Martin Wolf: > thank you for the quick response alex, > > but i still need your help ;) > i cloned both git trees > (http://lists.gnu.org/archive/html/qemu-devel/2013-05/msg00432.html) > that was the easy part for me (it boots like a charm ...) ... then i > built the qemu tree and found out > that it is just 1.4.50 and something was missing > so qemu would not start up ... > > would you be so kind alex and supply me with > the patches you meant yesterday i would need for qemu? > > ty in advance > > > > Am 16.07.2013 16:25, schrieb Alex Williamson: >> On Tue, 2013-07-16 at 14:35 +0200, Martin Wolf wrote: >>> 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 >> Hopefully not needed, only use this option if you need to. vfio will >> print an error to dmesg and qemu will fail to start if you need it. >> >>> 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? >> I think most of the folks using the guide you reference are using my >> vfio-vga-reset branches of qemu & kernel (or patches extracted from >> them). These add an important step for reproducibility, by being able >> to reset the bus for the graphics card, giving us a way to reset the >> device. The other thing in the qemu branch are improved quirks. I've >> just posted these to qemu-devel and plan to get them pulled for 1.6. >> Note that for ATI/AMD cards, a critical quirks is intercepting the byte >> at I/O port address 0x3c3. Without this, the VGA BIOS can't bootstrap >> itself. The vfio-vga-reset branch has a conditional replacement of >> this, which doesn't seem to work for everyone. I believe the version I >> posted to qemu-devel yesterday is a better implementation of that quirk. >> >>> ------- >>> >>> 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? >> I don't know what qemu-bridge-helper is/was, but you're probably better >> off asking bridge questions in a separate thread instead of buried here. >> Thanks, >> >> Alex >> -- Adiumentum GmbH Gf. Martin Wolf Banderbacherstraße 76 90513 Zirndorf 0911 / 9601470 mwolf@xxxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
