From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Williamson <alex.williamson@redhat.com>
Subject: Re: pci passthrough error about insufficient iommu width
Date: Thu, 07 Aug 2014 09:02:50 -0600
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Cc: William Tu <u9012063@gmail.com>, kvm@vger.kernel.org
To: Nishank Trivedi <nishank.trivedi@netapp.com>
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On Wed, 2014-08-06 at 23:12 -0700, Nishank Trivedi wrote:
> On 8/6/14, 2:49 PM, William Tu wrote:
> >>
> >> Try vfio-pci instead of pci-assign
> >>
> 
> Thanks Alex, William. Using vfio worked.
> So does that mean pci-assign is being deprecated?

Yes, vfio is meant to replace pci-assign with a better device ownership
model, better security, better separation from KVM, support for multiple
architectures, etc.  There are no concrete plans to remove pci-assign,
but as you can see, it's not as well tested or maintained as vfio.
Thanks,

Alex