linux-kernel - Re: [PATCH 1/2] virtio-scsi: first version

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Date:	Mon, 05 Dec 2011 11:08:54 +0100
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	"Michael S. Tsirkin" <mst@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Stefan Hajnoczi <stefanha@...ux.vnet.ibm.com>
Subject: Re: [PATCH 1/2] virtio-scsi: first version

On 12/03/2011 11:22 PM, Benjamin Herrenschmidt wrote:
>> >  You can fix this in QEMU; READ and WRITE commands can be split in
>> >  multiple parts.  The scsi-block device I added recently does this.
> You can split -some- commands... it's clumsy and not always legit, you
> don't always know all commands (what about vendor commands such as
> firmware updates etc...)

For the record, firmware updates won't run under virt unless you make 
qemu runs with CAP_SYS_RAWIO.

Paolo
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