[Xen-devel] Error on creation of Event channel (17= file_exists)

[Carlo Maiero <zesster@xxxxxxxxx>]

I'm creating an event channel between hypervisor and xen. Starting from trace.c xentrace.c

I've put this line in the xen.h

#define   VIRQ_XENINI    11

I've put in the hypervisor this code:

/*notify DOM0 event of xenini*/

static void xenini_notify_dom0(unsigned long unused){

send_guest_global_virq(dom0, VIRQ_XENINI);

}

static DECLARE_TASKLET(xenini_notify_dom0_tasklet, xenini_notify_dom0, 0);

so if i have to notify to dom0 an event,  i just need to call:  

tasklet_schedule(&xenini_notify_dom0_tasklet); 

true?? (it seems to work)

In a process running on dom0 i'm running this code:

static void event_init(void)

{

    int rc;

    rc = xc_evtchn_open();

    if (rc < 0) {

        perror(xc_get_last_error()->message);

        exit(EXIT_FAILURE);

    }

    event_fd = xc_evtchn_fd(rc);

    rc = xc_evtchn_bind_virq(event_fd, VIRQ_XENINI);

    if (rc == -1) {

        PERROR("failed to bind to VIRQ_XENINI port");

        exit(EXIT_FAILURE);

    }

    virq_port = rc;

}

and i create a successful way to create the channel.

but when i shut down the process in dom0. when i try to restart it. 

It says: ERROR: failed to bind to VIRQ_XENINI port (17= file_exists).

what i have to add when i close the program? 

Attachment: getinfoDom0.c
Description: Binary data

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel