To prevent reentering vcpu after IO completion it is not enough to set env->stopped since it is checked only in main loop but control will not get there until next non-IO exit since kvm_run() will reenter vcpu to complete IO instruction. Solve this by sending self-signal to request exit after IO instruction completion. Signed-off-by: Gleb Natapov <gleb@xxxxxxxxxx> diff --git a/qemu-kvm.c b/qemu-kvm.c index be1dac2..4f7cf6d 100644 --- a/qemu-kvm.c +++ b/qemu-kvm.c @@ -603,6 +603,10 @@ int kvm_run(CPUState *env) r = pre_kvm_run(kvm, env); if (r) return r; + if (env->exit_request) { + env->exit_request = 0; + pthread_kill(env->kvm_cpu_state.thread, SIG_IPI); + } r = ioctl(fd, KVM_RUN, 0); if (r == -1 && errno != EINTR && errno != EAGAIN) { diff --git a/vl.c b/vl.c index 9e9c176..dcfab13 100644 --- a/vl.c +++ b/vl.c @@ -1817,6 +1817,7 @@ void qemu_system_reset_request(void) } if (cpu_single_env) { cpu_single_env->stopped = 1; + cpu_exit(cpu_single_env); } qemu_notify_event(); } -- Gleb. -- 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