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From: Gerd Hoffmann <kraxel@redhat.com>
Date: Tue, 17 Feb 2015 09:23:35 +0100
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Subject: Re: [Qemu-devel] [PATCH v2 1/4] virtio-pci: add flags to
 enable/disable legacy/modern
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To: Fam Zheng <famz@redhat.com>
Cc: qemu-devel@nongnu.org, Anthony Liguori <aliguori@amazon.com>, mst@redhat.com

  Hi,

> Should we forbid setting both legacy and modern at the same time?

No, this is explicitly allowed in the spec and it is needed for the
transition from legacy to modern.

cheers,
  Gerd