Jamie Lokier <jamie@xxxxxxxxxxxxx> writes: > Rusty Russell wrote: >> I don't think it'll be that bad; reset clears the device to unknown, >> bar0 moves it from unknown->legacy mode, bar1/2/3 changes it from >> unknown->modern mode, and anything else is bad (I prefer being strict so >> we catch bad implementations from the beginning). > > Will that work, if the guest with kernel that uses modern mode, kexecs > to an older (but presumed reliable) kernel that only knows about legacy mode? > > I.e. will the replacement kernel, or (ideally) replacement driver on > the rare occasion that is needed on a running kernel, be able to reset > the device hard enough? Well, you need to reset the device, so yes. Cheers, Rusty. _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
