Re: [Xen-users] GPL PV drivers

[Brian Krusic <brian@xxxxxxxxxx>]

Thanks Pasi, just the info I was looking for.

Thanks again.

- Brian

On Jan 7, 2010, at 10:20 PM, Pasi Kärkkäinen wrote:

> On Thu, Jan 07, 2010 at 05:15:28PM -0800, Brian Krusic wrote:
> > Hi james.
> >
> > Perhaps you can help me.
> >
> > So I have pic pass through working for an Nvidia card which is my 2nd
> > graphics adapter.
> >
> > I wish to dedicate it to a particular domU.
> >
> > Besides adding the below line in my domU config file;
> >
> > pci = ['07:00.0']
> >
> > What else do I need to do before compiling Nvidia drivers (I found a
> > few write ups that tell you how to do this) in that domU?
> VGA/graphics pci passthrough is pretty much different from a 'normal'
> PCI passthrough (NIC, disk controller/HBA, usb host, sound card).
>
> VGA passthrough requires emulation of various legacy x86 memory  
> ranges,
> IO ports, and whatnot. It also requires re-execution of VGA adapter  
> BIOS
> in the guest.
>
> Various people have gotten it working with xen-unstable (upcoming  
> Xen 4.0)
> but I think all of them needed some custom modified patches.
>
> Intel guys have been working on VGA passthrough stuff.
> See xen-devel mailinglist archives about Xen VGA passthrough.
>
> -- Pasi
>
> > Incidentally, do you know how to make the above pci line work in the
> > new domU config syntax?
> >
> > - Brian
> >
> > On Jan 7, 2010, at 5:03 PM, James Harper wrote:
> >
> > > > Hi,
> > > > Is James Harper / GPL PV drivers
> > > > borrowed some GPL code from the Linux kernel related to enumering
> > > > PCI devices
> > > > on Windows or something like this?
> > > > Can someone please clarify this. Thank you in advance.
> > > I'm not sure what the question is. I used the Linux PV stuff as
> > > inspiration for the GPLPV drivers and there is some direct cut &
> > > paste in there but Windows is sufficiently different to Linux that
> > > most of the work had to be done from scratch.
> > >
> > > Or maybe you asking about PCI passthrough?
> > >
> > > James
> > > _______________________________________________
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> > > Xen-users@xxxxxxxxxxxxxxxxxxx
> > > http://lists.xensource.com/xen-users
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