Il 10/03/2013 15:55, Gleb Natapov ha scritto: > > > Why not move INIT case from below as is? Vcpu is reset to correct sate > > > by QEMU just like during system_reset. > > > > APs would not be able to receive SIPIs after executing do_cpu_init, > > because they would stay in KVM_MP_STATE_RUNNABLE state. > > If APs are in runnable state after reset with in kernel irq chip we > have a bug somewhere. Here is where we are resetting the processor. After clearing CPU_INTERRUPT_INIT, no matter what else we do (such as resetting the APIC and CPU), we need to set the mp_state to KVM_MP_STATE_INIT_RECEIVED. Or if we go with your simpler hypervisor patch, we need to go to either KVM_MP_STATE_INIT_RECEIVED for APs (wait for SIPI) or KVM_MP_STATE_SIPI_RECEIVED for the BSP (restart running from the reset vector). > Should AP be able to get SIPI without INIT after trigger of INIT# line? Yes, the effect is the same for an INIT interrupt and the triggering of INIT#. Paolo -- 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
