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. > That is, of course, true, although "some notion of" is very broad, and one could also use this for detection and some hypervisor-specific communication for the actual I/O. However, one probably wants to think about what the heck one actually means with "virtualization" in the absence of a lot of this stuff. PCI is probably the closest thing we have to a lowest common denominator for device detection. -hpa _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
