Jeremy Fitzhardinge wrote: > Andi Kleen wrote: >> The implementation wouldn't need to use PCI at all. There wouldn't >> even need to be PCI like registers internally. Just a pci device >> with an ID somewhere in sysfs. PCI with unique IDs >> is just a convenient and well established key into the driver module >> collection. Once you have the right driver it can do what it wants. > > But I understood hpa's suggestion to mean that there would be a standard > PCI interface for a hardware RNG, and a single linux driver for that > device, which all hypervisors would be expected to implement. But > that's only reasonable if the virtualization environment has some notion > of PCI to expose to the Linux guest. The actual PCI bus could paravirtualized. It's just a question of whether one reinvents a device discovery mechanism (like XenBus) or whether one piggy backs on existing mechanisms. Furthermore, in the future, I strongly suspect that HVM will become much more important for Xen than PV and since that already has a PCI bus it's not really that big of a deal. Regards, Anthony Liguori > J _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
