2016-08-10 15:27-0300, Eduardo Habkost: > Hi, > > I got a bug report[1] that seems to be caused by kvm_pv_unhalt > not working with kernel_irqchip=off. > > Is kvm_pv_unhalt supposed to work at all without kernel_irqchip? No. Guest interface of current PV unhalt is based on APIC ID and KVM does not ask userspace to handle the unknown mapping to VCPU. The code in kernel just somehow managed not to BUG. :) > Should QEMU prevent it from being enabled if kernel_irqchip=off? Yes. We'd need a new guest or userspace interface to make it work. KVM should not pretend that the feature works without kernel_irqchip. > Related question: is there any kvm-unit-test test for > kvm_pv_unhalt? Not that I know of, thanks for the request. > [1] https://bugzilla.redhat.com/show_bug.cgi?id=1363679 -- 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
