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Subject: Re: [virtio] Groups - Action Item "Create text version of virtio 0.9.5 document" added
On Wed, Jul 31, 2013 at 10:58:21AM +0100, Pawel Moll wrote: > > Link to a discussion? > > http://thread.gmane.org/gmane.linux.kernel.virtualization/20144 > > Paweł Reading through this, you want a way to say "there's no device there" for virtio-mmio? I think this is a bus-specific problem. PCI has a different, standard way to do this (report 0xfffffffff as both device and vendor ID). If you want to use subsystem ID for this in virtio-mmio, that's fine. But I think that we don't need a "do nothing device" for this - just reserve some IDs (declare them invalid) and bus will then be able to define behaviour as it sees fit.