Re: [Qemu-devel] [PATCH 3/3] megasas: LSI Megaraid SAS emulation

[Hannes Reinecke]

On 07/04/2011 12:29 PM, Paolo Bonzini wrote:
> On 07/04/2011 09:26 AM, Hannes Reinecke wrote:
> > >
> > Cool.
> > Exactly what I need.
> >
> > FWIW, feel free to add my 'Acked-by' to it.
> >
> > Any chance of getting them included?
>
> I'm not very tied to pvscsi; I just needed an HBA that is not a joke
> by modern standards :) to play with the SCSI layer. There may be
> hope that megasas will come before pvscsi or eliminate the need for
> it altogether. So, feel free to pick up patches 5-8 from that series.
Hmm. My goal was actually to get the megasas HBA emulation upstream.
When sticking it behind another set of patches chances are not 
exactly increasing.
However, it would certainly make my life easier.

> That said, note that scsi-generic does *not* support scatter/gather
> in that series, so you should still make sure the fallback paths
> work well. :) In pvscsi I added a qdev property to toggle
> scatter/gather, it was useful for benchmarking.
Have to check. My patchset did, so it should be reasonably easy to 
port that one to your infrastructure.

However, I probably will see to fixup the megasas emulation with the 
current infrastructure, get that in, and then move over to the iovec 
infrastructure.

But if you promise to merge the iovec infrastructure I'm more than 
willing to fixup the scsi-generic backend.
Just say the word.

Cheers,

Hannes
--
Dr. Hannes Reinecke                   zSeries & Storage
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