From: Vadim Rozenfeld <vrozenfe@redhat.com>
To: Tomasz Chmielewski <mangoo@wpkg.org>
Cc: Luca Tettamanti <kronos.it@gmail.com>,
kvm@vger.kernel.org, linux-pci@vger.kernel.org
Subject: Re: lspci says: "SCSI storage controller: Qumranet, Inc. Virtio block device". Is it really?
Date: Mon, 19 Oct 2009 15:48:08 +0200 [thread overview]
Message-ID: <4ADC6E18.4080505@redhat.com> (raw)
In-Reply-To: <4ADC6CDC.3000409@wpkg.org>
On 10/19/2009 03:42 PM, Tomasz Chmielewski wrote:
> Luca Tettamanti wrote:
>
>>> So why was "SCSI storage controller" any better than "IDE interface" or
>>> "SATA controller" for virtio block device, if it does not talk SCSI
>>> protocol
>>> (other than "SCSI storage controller" being the first on the list of
>>> subclasses)?
>>
>> Because both ATA and SATA classes have a generic driver that would try
>> to bind to that controller (and the whole point of virtio block device
>> is to avoid emulating a ATA/SATA controller).
>>
>>> Doesn't "80 Mass storage controller" ("0x80 0x00 Other mass
>>> storage
>>> controller") fit better for virtio block device?
>>
>> Maybe. I guess that are compatibility problem with "other" operating
>> systems.
>
> Thanks for clarifications.
>
> It makes sense in that case - I don't have any more questions ;)
>
>
we need it for windows viostor driver to be WHQL'ed
next prev parent reply other threads:[~2009-10-19 13:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-19 12:14 lspci says: "SCSI storage controller: Qumranet, Inc. Virtio block device". Is it really? Tomasz Chmielewski
2009-10-19 13:09 ` Luca Tettamanti
2009-10-19 13:31 ` Tomasz Chmielewski
2009-10-19 13:36 ` Luca Tettamanti
2009-10-19 13:42 ` Tomasz Chmielewski
2009-10-19 13:48 ` Vadim Rozenfeld [this message]
2009-10-19 19:01 ` Gerd Hoffmann
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