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Date: Wed, 18 Apr 2012 21:12:35 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: KY Srinivasan <kys@microsoft.com>
Cc: Andy Whitcroft <apw@canonical.com>, Jeff Garzik <jgarzik@pobox.com>,
        "linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Mike Sterling <mike.sterling@microsoft.com>
Subject: Re: [PATCH 0/2] Hyper-V disk support V3
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> The notion of "pass through" in Hyper-V  is a little different. IDE devices can be configured
> under either one of the supported controllers and these devices can either be virtual disks
> (VHDs) or physical disks. In either case these will be presented to the guest as IDE devices.

So what ensures that by skipping it at the ATA device level we will
always find it as a VHD ?

Alan