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Date: Mon, 17 Sep 2012 14:42:08 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] [RFC v2 04/12] hw/qdev-properties.c: Add
	"transport" property.
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To: Evgeny Voevodin <e.voevodin@samsung.com>
Cc: peter.maydell@linaro.org, kyungmin.park@samsung.com, qemu-devel@nongnu.org, aliguori@us.ibm.com

Il 17/09/2012 12:00, Evgeny Voevodin ha scritto:
> Virtio back-end devices can be plugged into both transports:
> VIRTIO_PCI and VIRTIO_MMIO. In order to choose the desired
> transport we have a property "transport" in every back-end
> state struct. By specifying -device virtio-blk-pci user chooses
> VIRTIO_PCI transport and "transport" property is set automatically.
> But in order to provide full control to user we need to have
> "transport" property available to be set through command line:
> 
> -device virtio-pci,id=virtio-pci.0
> -device virtio-blk,transport=virtio-pci.0,...

What's the difference between this and "bus"? i.e.

  -device virtio-pci,id=virtio-pci-0
  -device virtio-blk,bus=virtio-pci-0.0,...

Paolo