Re: [Qemu-devel] Virtio_PCI device driver code

[Stefan Hajnoczi <stefanha@gmail.com>]

On Wed, Mar 14, 2012 at 1:38 PM, Abhinav Pundir
<abhinavmasters@gmail.com> wrote:
> Hello all I am very much new to the world of KVM and Qemu.
> I am trying to make a communication possible between the Guest and the Host.
> I have studied how Virtio works but I am still confused how exactly the flow
> will work.
> The front end drivers will communicate to the back end driver by invoking a
> kick function, but which back end driver will be involved in that.
> Also how the back end driver present in the Hypervisor will pass this
> information to the emulated device running in  Qemu.
> I am trying to use virtio_pci.c and some suitable modification, so that the
> back end driver can take that information and that information will
> be available to the Hypervisor.
>
> It will be very useful if somebody can provide me the working code of the
> virtio_pci with all the dependencies in the separate directory, so that I
> will be able to insert that module and the equivalent back-end driver code
> running in the Hypervisor.

Please explain what you are trying to achieve.  Coding a custom virtio
device may not be the best solution - it depends on the specific use
case.

Stefan