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

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> -----Original Message-----
> From: Christoph Hellwig [mailto:hch@xxxxxxxxxxxxx]
> Sent: Sunday, May 01, 2011 11:41 AM
> To: Greg KH
> Cc: KY Srinivasan; Christoph Hellwig; gregkh@xxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; devel@xxxxxxxxxxxxxxxxxxxxxx;
> virtualization@xxxxxxxxxxxxxx
> Subject: Re: [PATCH 00/25] Staging: hv: Cleanup vmbus driver code
> 
> On Fri, Apr 29, 2011 at 09:40:25AM -0700, Greg KH wrote:
> > Are you sure the libata core can't see this ide controller and connect
> > to it?  That way you would use the scsi system if you do that and you
> > would need a much smaller ide driver, perhaps being able to merge it
> > with your scsi driver.
> >
> > We really don't want to write new IDE drivers anymore that don't use
> > libata.
> 
> The blkvsc driver isn't an IDE driver, although it currently claims
> the old IDE drivers major numbers, which is a no-no and can't work
> in most usual setups.

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.

Regards,

K. Y 

> I'm pretty sure I already complained about
> this in a previous review round.


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