Re: KVM with PCI forwarding really slow after 4.1

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On 01/12/2015 18:09, Michael Büsch wrote:
> Hi,
> 
> 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.

Paolo
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