Re: [Xen-devel] [rfc/patch] pv-on-hvm: make netfront grab PCI ressources.

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 8/2/07 16:50, "Gerd Hoffmann" <kraxel@xxxxxxx> wrote:

> This patch makes netfront grab the rtl8139 PCI ressources when running
> as paravirtualized driver in a HVM domain.  If the driver fails to grab
> the ressources it refuses to load.  If it succeeds grabbing the
> ressources this shoulld prevent any other driver from taking the device.
> 
> This makes sure that we don't have two drivers (8139 pci driver and
> netfront) active for the same device.

It seems to me this is a tools issue: they should ensure that only netback
or qemu advertises a particular interface. Or qemu interface could be
disabled when netback is connected to (although that wouldn't stop rtl8139
driver seeing the deactivated qemu interface). In any case, doing a hack in
netfront doesn't work if the rtl8139 driver gets probed first?

 -- Keir



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