Re: [Xen-devel] Re: NX related build failure in latest pv_ops dom0 hackery tree

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

Christophe Saout wrote:
> Hi Jeremy,
>
>   
> > > In the meantime, you can try to use that tree:
> > >
> > > http://git.saout.de/gitweb/?p=linux-dom0-pvops.git;a=summary
> > >
> > > It's the latest tip.git merged with one of the push branches from
> > > Jeremy's git repo and cherry-picked commits from the backend, blkback
> > > and netback trees plus minor merge conflict and compile problem fixups.
> > > It seems feature-complete to me, stable and is able to run DomU domains
> > > without problems.
> > >   
> > >       
> > Does it work with AHCI drives for you?  It isn't for me (nor my remerge, 
> > so I'm not sure what has broken in the meantime...).
> >     
> What kind of machine is this?  I have a Thinkpad here (Intel) and it is
> working.  However, I have tried booting into the same kernel on a remote
> maching (unfortunately, no physical access to the machine) and the exact
> same kernel that works on my notebook natively and under Xen as Dom0
> does not boot the kernel under Xen on that remote machine (but runs
> natively).  I can't tell why, but I suspect it might be AHCI related,
> because the machine also uses AHCI, but a different controller.  It is
> an AMD machine with this controller:
>
> 00:12.0 SATA controller: ATI Technologies Inc SB600 Non-Raid-5 SATA
>
> I could try to compile netconsole and the NIC driver into the kernel to
> capture the kernel messages if that would help.
Well, I've tried it on a newish Intel mobo machine with on-board ahci, 
and that fails.  Another, older, Dell machine using a scsi controller 
works fine.  I haven't tried my laptop yet.
In theory AHCI is ACHI, so the controller vendor shouldn't matter.   It 
may have more to do with interrupt controller configuration or memory 
layout.
On your failing machine, does it work any better if you switch the 
controller to compat/legacy mode?
   J


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