Hello! > Believe it or not, we're not only patch reviewing machines, and if you > count the number of pending patches, you'll quickly notice that yours > are basically noise in the grand scheme of things. > > So please cut us some slack. What do you mean exactly? Stop discussions and just do everything you suggest before respin? Plz don't attempt to read this between lines, i can be bad at communication; this is not a complain and/or hurt indication, i am just asking. :) > > complete implementation of API which allows to emulate GIC in userspace by > > qemu, and now i can run any virtual machine, including generic timer, on > > vGIC-less machine. RasPI-2 is expected to benefit too. > > Do you mean feeding interrupts back to userspace? Yes, exactly. I have a working proof-of-concept here. > How is that going to > work with the active-timer series that really mandates a full blown GIC? > Your pet platform might cope with it, but I can't see that happening on > the RPi. I don't know, sorry, things are happening too fast and i can't follow everything. Well, actually it is possible to work without virtual timer at all. Yes, this means qemu has to implement some memory-mapped timer. With HW models like vexpress this is already done and works fine. I even tried to address this: https://lists.gnu.org/archive/html/qemu-devel/2015-06/msg06627.html, but Peter suggested to complete an API instead. I have done this as a proof-of-concept and case study for my project, so i want to upstream this in order not to be lost. After all, recent specs say that generic timer can also be memory-mapped. So, making KVM working without both vGIC and vTimer is not a real problem. This patchset addresses this scenario too, just needs some extra bits on vtimer side (ability to init KVM without it). Kind regards, Pavel Fedin Expert Engineer Samsung Electronics Research center Russia -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
