[Xen-devel] Unable to bind two domains for event channel

["Srujan D. Kotikela" <ksrujandas@xxxxxxxxx>]

hi,

I am trying to create an event channel between Dom0 and Dom2

CODE:

int main(void){

    int xce_handle, src_port, dst_port, xc_handle;
    
    int dom, remote_dom;
    
    dom=0;
    remote_dom=2;
    
    xc_handle=xc_interface_open();    //open the hypervisor interface
    printf("\n Accquired HYPERVISOR INTERFACE HANDLE: %d \n", xc_handle);

    dst_port = xc_evtchn_alloc_unbound(xc_handle, remote_dom, dom); //allocate a port on the remote domain
    printf("\n Allocated the port %d \n", dst_port);

    xce_handle = xc_evtchn_open();    //create a handle for event channel
    printf("\n Accquired HYPERVISOR INTERFACE EVTCHN HANDLE: %d\n", xce_handle);

    src_port = xc_evtchn_bind_interdomain(xce_handle, dom, dst_port);    
    printf("\n Allocated the port %d \n", src_port);
    
    xc_interface_close(xc_handle);
    xc_evtchn_close(xce_handle);
    
    return 0;
    
}

OUTPUT:
 Accquired HYPERVISOR INTERFACE HANDLE: 3 

 Allocated the port 19 

 Accquired HYPERVISOR INTERFACE EVTCHN HANDLE: 4

 Allocated the port -1 

    

My src_port is not getting allocated. I am getting -1 (error) as the return value for xc_evtchn_bind_interdomain. Can anyone help me with this?


Thanks in advance,
Srujan D. Kotikela

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