Re: [Xen-devel] [PATCH] Citrix PV Bus device [V3]

[James Bulpin <James.Bulpin@xxxxxxxxxxxxx>]

On Tue, 2 Jul 2013, Stefano Stabellini wrote:
> - the Citrix [vendor id|device id] pair has to be different from the
> xenproject one (0x5853|0x0001). I am sure we can arrange the
> xenproject device id space so that Windows PV drivers vendors don't have
> to acquire their own PCI vendor ids.

(removing qemu-devel)

I agree - this makes sense. There are already a few known uses of other
device IDs such as:

  0002 - used by Citrix for a version of Windows PV drivers [1]
  c110 - Virtualized HID [2]
  c147 - Virtualized Graphics Device [2]

I suggest we have a file somewhere in the Xen tree to record
reservations, e.g. docs/misc/pci-device-reservations.txt - changes to
this would then be managed via the usual patch submission process
and therefore be transparent and subject to community review. For
example we could allocate to a Xen vendor such as Citrix XenClient a
range of device IDs like c100-c1ff and let it use the range as it
desires.

In addition to these reservations we could encourage vendors to
record individual device IDs within their reservation with
pciids.sourceforge.net/www.pcidatabase.com as with the two XenClient
cases above.

Cheers,
James

[1] http://pciids.sourceforge.net/
[2] http://www.pcidatabase.com

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