>>> On 07.01.15 at 19:06, wrote:
> --- a/xen/arch/x86/hvm/hvm.c
> +++ b/xen/arch/x86/hvm/hvm.c
> @@ -5462,6 +5462,40 @@ static int hvmop_destroy_ioreq_server(
> return rc;
> }
>
> +static int hvmop_set_evtchn_upcall_vector(
> +XEN_GUEST_HANDLE_PARAM(xen_hvm_set_evtchn_upcall_vector_t)
HVM guests have always been confined to using the domain callback
via (see HVM_PARAM_CALLBACK_IRQ) to receive event notifications.
This is usually an IOAPIC vector and is only used if the event
channel is bound to vcpu 0.
PVHVM Linux uses a pre-defined interrupt vector for the event
channel upcall
