ron minnich wrote: > OK, so what are we doing here? We're using a PCI abstraction, as a > common abstraction,which is not common really, because we don't have a > common abstraction? So we describe all these non-pci resources with a > pci abstraction? >
No. You're confusing PV device discovery with the actual paravirtual transport. In a fully virtual environment like KVM, a PCI bus is present. You need some way for the guest to detect that a PV device is present. The most natural way to do this IMHO is to have an entry for the PV device in the PCI bus. That will make a lot of existing code happy. Once you've identified that the device exists, you're free to do whatever you want with it. Regards, Anthony Liguori > I don't get it at all. I really think the resource interface idea I > mentioned, which is borrowed from Plan 9, makes a whole lot more > sense. IBM Austin has already shown it in practice in the papers I > referenced. It can work. A memory channel at the bottom, with a > resource sharing protocol (9p) above it, and then you describe your > resources via names and a simple file-directory model. Note that PCI > sort of tries to do this tree model, but it's all binary, and, as > noted, it's hardly universal. > > All of this is trivially exported over a network, so the use of shared > memory channels in no way rules out network access. Plan 9 exports > devices over the network routinely. > > If you're using a PCI abstraction, something has gone badly wrong I think. > > thanks > > ron > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > kvm-devel mailing list > kvm-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/kvm-devel > > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
