[libvirt] [PATCH v3] qemu: fix command line building for iommu devices

[Pavel Hrdina]

On Mon, Oct 03, 2016 at 04:48:35PM +0100, Daniel P. Berrange wrote:
> The intel-iommu device has existed since QEMU 2.2.0, but
> it was only possible to create it with -device since
> QEMU 2.7.0, thanks to:
> 
>   commit 621d983a1f9051f4cfc3f402569b46b77d8449fc
>   Author: Marcel Apfelbaum <marcel at redhat.com>
>   Date:   Mon Jun 27 18:38:34 2016 +0300
> 
>     hw/iommu: enable iommu with -device
> 
>     Use the standard '-device intel-iommu' to create the IOMMU device.
>     The legacy '-machine,iommu=on' can still be used.
> 
> The libvirt capability check & command line formatting code
> is thus broken for all QEMU versions 2.2.0 -> 2.6.0 inclusive.
> 
> This fixes it to use iommu=on instead.
> 
> Signed-off-by: Daniel P. Berrange <berrange at redhat.com>
> ---

ACK
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