On Thu, Sep 11, 2014 at 04:24:04PM +0200, Paolo Bonzini wrote: > Il 11/09/2014 16:21, Gleb Natapov ha scritto: > > As far as I can tell the if that is needed there is: > > > > if (!is_guest_mode() || !(vmcs12->secondary_vm_exec_control & ECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)) > > write(PIC_ACCESS_ADDR) > > > > In other words if L2 shares L1 apic access page then reload, otherwise do nothing. > > What if the page being swapped out is L1's APIC access page? We don't > run prepare_vmcs12 in that case because it's an L2->L0->L2 entry, so we > need to "do something". We will do something on L2->L1 exit. We will call kvm_reload_apic_access_page(). That is what patch 5 of this series is doing. -- 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
