Re: [Qemu-devel] [PATCH 0/4] megaraid_sas HBA emulation

[Christoph Hellwig]

On Wed, Oct 28, 2009 at 09:11:29AM +0100, Hannes Reinecke wrote:
> The problem is I don't have any documentation for the LSI parallel
> SCSI controller. So I don't know if and in what shape I/O is passed
> down, nor anything else. And as the SCSI disk emulation is really
> tied into the LSI parallel SCSI controller, any change in the former
> is likely to break the latter.

scsi-disk is not tied into the lsi/symbios driver.  It's also used
by the esp driver and usb-mcd.  But it's a complete mess, and all my
attempts to untangle it have so far failed with my brain hurting for
a long time after.