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Date: Wed, 8 Mar 2017 16:59:17 +0800
From: Peter Xu <peterx@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH v3] intel_iommu: check misordered init when
 realize
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To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Marcel Apfelbaum <marcel@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, qemu-devel@nongnu.org, yi l liu <yi.l.liu@intel.com>, Jintack Lim <jintack@cs.columbia.edu>, Jason Wang <jasowang@redhat.com>, Alex Williamson <alex.williamson@redhat.com>

On Wed, Mar 08, 2017 at 03:35:50AM -0500, Paolo Bonzini wrote:

[...]

> The ordering should be explicit in the command line.  Since we do not have
> cycles, it should be possible.

Current QEMU should have no restriction on parameter ordering, right?
Or do we have any existing case that:

  "$QEMU -parameter1 -parameter2"

will work, while...

  "$QEMU -parameter2 -parameter1"

won't work?

Thanks,

> 
> The best solution would have been to add something like
> 
>    -device intel-iommu,id=root-complex-iommu -global mch.iommu=root-complex-iommu
> 
> but it's too late for that.

-- peterx