From: "Michael Büsch" <m@bues.ch>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org
Subject: Re: KVM with PCI forwarding really slow after 4.1
Date: Wed, 16 Dec 2015 18:55:28 +0100 [thread overview]
Message-ID: <20151216185528.75edf799@wiggum> (raw)
In-Reply-To: <565DDD47.1080104@redhat.com>
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On Tue, 1 Dec 2015 18:47:51 +0100
Paolo Bonzini <pbonzini@redhat.com> 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?
--
Michael
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next prev parent reply other threads:[~2015-12-16 17:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-01 17:09 KVM with PCI forwarding really slow after 4.1 Michael Büsch
2015-12-01 17:47 ` Paolo Bonzini
2015-12-16 17:55 ` Michael Büsch [this message]
2015-12-16 18:11 ` Paolo Bonzini
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