Re: [Qemu-ppc] [PATCH 01/58] spapr: proper qdevification

[Paolo Bonzini]

On 09/16/2011 04:08 PM, David Gibson wrote:
> > > Well, now I'm confused.  I had a look at a pHyp machine, and Linux
> > > seemed to see it as multiple targets on a single channel, but I'm sure
> > > the PAPR spec says you shouldn't have that.  So I'm going to have to
> > > look closer now.
> >
> >  If this is the case, there might be a bug in SLOF's probing of SCSI
> >  devices.
>
> Um.. I'm confused.  This is a pHyp (aka PowerVM) machine, so there is
> no SLOF.  What I'm seeing there seems to contradict the PAPR spec
> which is supposed to describe it.  So I don't see how it has a bearing
> on SLOF addressing.

I meant "if we want to make QEMU present devices like pHyp, we cannot do 
that without fixing SLOF".

> >  (2) move the devices so that both SLOF and Linux see them as x:0:0
> >  (one target per channel).  This would be inconsistent with pHyp, but
> >  it doesn't break either SLOF or Linux.
> >
>
> (2) sounds like what PAPR describes to me, so that sounds fine to me.

No, PAPR describes one target per *host*, not channel.

Paolo