Re: AMD KVM Pci Passthrough reports device busy

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Alex Williamson wrote:
> On Tue, 2012-06-05 at 18:55 +0200, Andreas Hartmann wrote:
>> Alex Williamson wrote:
>> [...]
>>> Yep, I think the previous suggestion about reloading vfio_iommu_type1
>>> with allow_unsafe_interrupts=1 will solve it.
>>
>> Yes! Works now. Success!!!!!
>>
>> Works means: Device is seen in VM. I couldn't test it up to now, because
>> I don't have any driver in the VM for this device.

Well, I've got another problem now with 3.4: I can't pass through my
PCIe device any more, which works fine without any problem with 3.1.10.
I'm getting the following error in 3.4:

Failed to assign irq for "hostdev0": Input/output error
Perhaps you are assigning a device that shares an IRQ with another device?
qemu-kvm: -device pci-assign,host=04:00.0,id=hostdev0,configfd=19,bus=pci.0,addr=0x6: Device 'pci-assign' could not be initialized

options kvm allow_unsafe_assigned_interrupts=1 is set.

There are share IRQ's - but that's the same in 3.1.10.

This VM is started with libvirt (virsh) the old fashioned way with the
old qemu-kvm tool. Doesn't this work any more?

BTW: I think libvirt / virsh isn't aware yet of the new vfio way, isn't
it?


Thanks,
Andreas
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