Am 08.07.2013 23:06, schrieb Anthony Liguori: > Alexander Graf <agraf@xxxxxxx> writes: > >> On 08.07.2013, at 22:08, Anthony Liguori wrote: >> >>> I think we're trying to fit a square peg into a round hole. >>> >>> virtio-mmio is a virtio transport where each device has a dedicated set >>> of system resources. >>> >>> Alex, it sounds like you want virtio-mmio-bus which would be a single >>> set of system resources that implemented a virtio bus on top of it. >> >> Well, what I really want is a sysbus that behaves like PCI from a >> usability point of view ;). > > Which means you need to have (1) a discovery mechanism with a stable > addressing mechanism (2) a way to communicate this to the guest from the > host. FWIW I vaguely remember a Lightning Talk at FOSDEM 2012 about MMIO device discovery through chained in-memory data structures or so: https://archive.fosdem.org/2012/schedule/event/wishbone.html http://www.ohwr.org/projects/fpga-config-space Maybe such metadata could be supplied alongside a virtual device, whether on Wishbone, AMBA or whatever? Just a thought. Regards, Andreas > That's all that PCI is. A host controller is a "sysbus" device that > uses a standardized discovery and addressing mechanism. > > Regards, > > Anthony Liguori -- SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
