Re: [Qemu-discuss] qemu - kvm - Line 6 HD300

[Mike Lovell]

On 07/26/2012 03:55 AM, Johan & Katrien Dewaele² wrote:
> Mike, thanks for your info and effort to go through my confused mail ;-)
> Tried your suggestions on usb passthrough but this is not going to work on my 
> pc :
>
> Allthough dmesg tells me:
>
> Kernel command line: auto BOOT_IMAGE=Linux-3.4.6 ro root=805 selinux=0 
> intel_iommu=on
> Intel-IOMMU: enabled
>
> virtualbox tells me:
> vboxpci: IOMMU not found (not registered)
>
> and qemu:
> # qemu -netdev user,id=usernet -device rtl8139,netdev=usernet -smb 
> /mnt/MijnDocsDisk -m 512 -smp 4 -localtime -device piix4-usb-uhci -usb 
> -usbdevice host:0e41:5057 -machine accel=kvm,kernel_irqchip=on -option-rom 
> /usr/share/seabios/optionrom/kvmvapic.bin -device pci-assign,host=00:1d.0 
> /mnt/Windisk/QEMU/qemu_XP3
> qemu: -device pci-assign,host=00:1d.0: Parameter 'driver' expects device type
>
> and kvm:
> # kvm -smb /mnt/MijnDocsDisk -m 512 -smp 4 -localtime -device piix4-usb-uhci 
> -usb -usbdevice host:0e41:5057 -machine accel=kvm,kernel_irqchip=on -option-rom 
> /usr/share/seabios/optionrom/kvmvapic.bin -device pci-assign,host=00:1d.0 
> /mnt/Windisk/QEMU/qemu_XP3
> No IOMMU found.  Unable to assign device "(null)"
> **
> ERROR:/tmp/buildd/qemu-kvm-1.1.0+dfsg/qom/object.c:389:object_delete: assertion 
> failed: (obj->ref == 0)
>
> I have no option in BIOS to enable/disable VT-d
>
> So I suspect that my box (or CPU or chipset or BIOS) does not support VT-d.
>
> Excuse me also for making a separate post but I'm not subscribed to the list.
> Thanks for your time.
>
>
> Johan

i've tried getting vt-d to work on a number of systems and have only 
been successful with one of them. it seems it is still the exception to 
have a system that has working support for it. it was a long shot but 
the only thing i could think of to get you better performance. sry.

mike