[PATCH 00/25] Staging: hv: Cleanup vmbus driver code

[Christoph Hellwig]

On Sun, May 01, 2011 at 03:46:23PM +0000, KY Srinivasan wrote:
> What is the issue here? This is no different than what is done in other
> Virtualization platforms. For instance, the Xen blkfront driver is no
> different - if you specify the block device to be presented to the guest
> as an ide device, it will register for the appropriate ide major number.

No, it won't - at least not in mainline just because it's so buggy.
If distros keep that crap around I can only recommed you to not use
them.