On Tue, Nov 01 2016 at 02:54:11 PM, Peter Maydell <peter.maydell@xxxxxxxxxx> wrote: > On 1 November 2016 at 14:50, Christoffer Dall > <christoffer.dall@xxxxxxxxxx> wrote: >> On Tue, Nov 01, 2016 at 11:26:54AM +0000, Peter Maydell wrote: >>> Possible current and future outbound interrupt lines (some of these >>> would only show up in some unlikely or lots-of-implementation-needed >>> cases, I'm just trying to produce an exhaustive list): >>> * virtual timer >>> * physical timer >>> * hyp timer (nested virtualization case) >>> * secure timer (unlikely but maybe if EL3 is ever supported inside a VM) >>> * gic maintenance interrupt (nested virt again) >>> * PMU interrupt >> >> Thanks for the list, that's good to have around for the future. >> >> There's also the potential of the EL2 virtual timer for nested VHE >> support, right? > > That's the one I meant by "hyp timer". VHE also adds an extra virtual timer, for symmetry with what EL1 provides (and on which CNTVOFF doesn't have any effect) - see section B8.1.1 of the ARMv8.1 addendum. So we effectively have: - Secure physical EL3 - Non-secure physical EL1 - Non-secure virtual EL1 - Non-secure physical EL2 - Non-secure virtual EL2 Thanks, M. -- Jazz is not dead. It just smells funny. -- 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
