Re: [Xen-devel] [PATCH] Citrix PV Bus device

[James Bulpin <James.Bulpin@xxxxxxxxxxxxx>]

On Tue, 2013-07-02 at 10:05, Paul Durrant wrote:
> > -----Original Message-----
> > From: Ian Campbell
> > Sent: 02 July 2013 10:02
> > To: Paul Durrant
> > Cc: Jan Beulich; qemu-devel@xxxxxxxxxx; xen-devel@xxxxxxxxxxxxx
> > Subject: Re: [Xen-devel] [PATCH] Citrix PV Bus device
> >
> > On Tue, 2013-07-02 at 08:57 +0000, Paul Durrant wrote:
> > > > -----Original Message-----
> > > > From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
> > > > Sent: 02 July 2013 09:46
> > > > To: Paul Durrant
> > > > Cc: xen-devel@xxxxxxxxxxxxx; qemu-devel@xxxxxxxxxx
> > > > Subject: Re: [Xen-devel] [PATCH] Citrix PV Bus device
> > > >
> > > > >>> On 02.07.13 at 10:39, Paul Durrant <paul.durrant@xxxxxxxxxx>
> wrote:
> > > > > --- a/include/hw/pci/pci_ids.h
> > > > > +++ b/include/hw/pci/pci_ids.h
> > > > > @@ -151,4 +151,7 @@
> > > > >  #define PCI_VENDOR_ID_TEWS               0x1498
> > > > >  #define PCI_DEVICE_ID_TEWS_TPCI200       0x30C8
> > > > >
> > > > > +#define PCI_VENDOR_ID_CITRIX             0x5853
> > > >
> > > > Is that really the right way to do things, considering that the same
> > > > value is elsewhere used for PCI_VENDOR_ID_XEN?
> > > >
> > > > Jan
> > > >
> > > > > +#define PCI_DEVICE_ID_CITRIX_PV_BUS      0x0002
> > > > > +
> > > > >  #endif
> > > >
> > >
> > > I opted to do this for clarity. The fact that the Xen platform device
> > > uses Citrix's vendor ID is historical;
> >
> > AFAIR this was XenSource's vendor ID (it is "XS" in ASCII) which was
> > donated to the Xen community. I'll clarify this internally though.
> >
> 
> The PCI SIG has it registered to Citrix.

To be clear: the Xen PCI vendor ID (0x5853) is currently registered by Citrix
on behalf of the Xen community. The ID is widely used in the community
including within Linux and various vendor and community drivers for other
OSs. Citrix has no intention to change this and will continue to fund this
community resource through its PCI-SIG membership.

Cheers,
James (registered primary contact for Citrix's PCI-SIG membership)

--
James Bulpin
Senior Director, Technology, XenServer
Citrix


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