Re: [Qemu-devel] Virtio-pci issue

[Evgeny Voevodin]

On 28.05.2012 16:37, Stefan Hajnoczi wrote:
> On Thu, May 24, 2012 at 4:18 AM, Evgeny Voevodin<address@hidden>  wrote:
> > And also there is another problem that I've faced with. It is the ability to
> > plug as many pci back-ends as board wants.
> > I mean that if for each back-end board should create a transport, then user
> > have to know maximum number of transport instances
> > created by board. In the case of mmio transport I think that it's a correct
> > behaviour, but for pci transport seems not.
> Not sure I understand the problem.  Can you rephrase it?
>
> Stefan

Ok, I'll try )
As I see, to connect a pci device to board it should be enough to 
specify "-device ..." on command line.
And in the way virtio refactoring is moving, board should create 
transport pci device to correspond each
back-end created by "-device ..." command.
So, if we create more back-ends with "-device" option then transports 
created by board then there would be
back-ends that will not have corresponding transport device.
As result user should know maximum number of transport instances created 
by board to not overrun it.
In the case of mmio I think it's normal, but not in the pci case. Am I 
right?

--
Kind regards,
Evgeny Voevodin,
Leading Software Engineer,
ASWG, Moscow R&D center, Samsung Electronics
e-mail: address@hidden