Hi, I have an issue on one particular hardware with gicv3 and the old stable (4.9.22x) kernel where the timer interrupt randomly leaks to the host after the guest exit and the kvm_arch_timer_handler gets triggered. The guest does run, but the whine (unexpected interrupt) is annoying and it seems to be hindering the performance drastically - of both the host and the guest. This behavior can even lead to the host watchdog biting as the firing timer prevents the progress, especially during the very early boot when the guest is doing heavy paging anyway. Based on the comment in the latest code the fundamental issue is that the interrupt controller does not recognize the timer disable fast enough on guest exit. Has anyone worked on a proper fix for the issue for the old stable series? 5+ kernels seem to have quite a drastic rework on this front. Plain 'isb' did not seem to do the trick after the timer disable... -- Janne _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
