From: Tomasz Chmielewski <mangoo@wpkg.org>
To: Luca Tettamanti <kronos.it@gmail.com>
Cc: 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 15:42:52 +0200 [thread overview]
Message-ID: <4ADC6CDC.3000409@wpkg.org> (raw)
In-Reply-To: <68676e00910190636r693950dfk6abccd4c8ed3ad63@mail.gmail.com>
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 ;)
--
Tomasz Chmielewski
http://wpkg.org
next prev parent reply other threads:[~2009-10-19 13:42 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 [this message]
2009-10-19 13:48 ` Vadim Rozenfeld
2009-10-19 19:01 ` Gerd Hoffmann
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