Re: KVM with PCI forwarding really slow after 4.1

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On 16/12/2015 18:55, Michael Büsch wrote:
>>> On 01/12/2015 18:09, Michael Büsch wrote:
>>>>> I use "-device pci-assign,host=00:1a.0" to forward a USB
>>>>> host chip to a Win7 32 bit inside of qemu/kvm. That used to
>>>>> work pretty well, but it broke horribly somewhere after
>>>>> 4.1. With recent kernels the virtual machine boots, but is
>>>>> _very_ slow. It takes hours to boot. If PCI forwarding is
>>>>> disabled, everything is fine.
>>> 
>>> This has been reported already, I'm going to look at it this
>>> week.
> 
> Are there any news regarding this issue?

It's being discussed in Bugzilla
(https://bugzilla.kernel.org/show_bug.cgi?id=107561).

Paolo
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