Hello, I've been working for several days trying to get Pci Passthrough to work. So far the #kvm IRC channel has helped me with a few suggestions, though that hasn't yet solved the problem. I'm running CentOS 6.2 and was suggested I try compiling 3.2.18 kernel form kernel.org. This has changed a few of the messages but the guest still fails to start. Grepping for AMD-VI produces: # dmesg | grep AMD-Vi AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40 AMD-Vi: Lazy IO/TLB flushing enabled After boot I'm running the following script echo "unbind pci-pci bridge" echo "1002 4383" > /sys/bus/pci/drivers/pci-stub/new_id echo "unbind pci device" echo "0000:03:07.0" > /sys/bus/pci/drivers/ivtv/unbind echo "4444 0803" > /sys/bus/pci/drivers/pci-stub/new_id echo 0000:03:07.0 > /sys/bus/pci/devices/0000\:03\:07.0/driver/unbind echo 0000:03:07.0 > /sys/bus/pci/drivers/pci-stub/bind This is lspci -n showing my device behind the Pci-Pci bridge -[0000:00]-+-00.0 +-00.2 +-02.0-[01]--+-00.0 | \-00.1 +-09.0-[02]----00.0 +-11.0 +-12.0 +-12.2 +-13.0 +-13.2 +-14.0 +-14.1 +-14.3 +-14.4-[03]----07.0 +-14.5 +-15.0-[04]-- +-16.0 +-16.2 +-18.0 +-18.1 +-18.2 +-18.3 +-18.4 \-18.5 My kvm command and error are: # /usr/libexec/qemu-kvm -m 3048 -net none -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive file=/dev/vg_hdd/lv_sagetv,if=none,id=drive-virtio-disk0,format=raw,cache=none,aio=native -device pci-assign,host=03:07.0 Failed to assign device "(null)" : Device or resource busy qemu-kvm: -device pci-assign,host=03:07.0: Device 'pci-assign' could not be initialized dmesg after attempting to start shows: fuse init (API version 7.17) ivtv 0000:03:07.0: BAR 0: can't reserve [mem 0xf8000000-0xfbffffff pref] kvm_vm_ioctl_assign_device: Could not get access to device regions tda9887 5-0043: destroying instance tuner-simple 5-0061: destroying instance ivtv 0000:03:07.0: PCI INT A disabled ivtv: Removed Hauppauge WinTV PVR-350 pci-stub 0000:03:07.0: claimed by stub pci-stub 0000:03:07.0: claimed by stub pci-stub 0000:03:07.0: PCI INT A -> GSI 21 (level, low) -> IRQ 21 pci-stub 0000:03:07.0: restoring config space at offset 0x1 (was 0x2100000, writing 0x2100002) assign device 0:3:7.0 failed pci-stub 0000:03:07.0: PCI INT A disabled This is on the 3.2.18 kernel amd_iommu=1 clear_emulator_capabilities = 0 relaxed_acs_check = 1 Any help would be greatly appreciated. I've just recently bought this hardware specifically for this purpose and if the motherboard has a bad IOMMU implementation I'd like to figure it out in time to exchange it. This is an GA-970A-D3 Thanks, Chris P.S. I'm not subscribed to the list so if this list requires is be sure to cc me on responses (sanders.chris@xxxxxxxxx) -- 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
