[Xen-devel] Making a hypercall in DomU

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

Hi,

I have implemented a new hypercall and it is working fine when tested from the Dom0 user-space. I want to invoke this hypercall from DomU user-space. 

I copied all the /usr/lib/libxen* and /usr/include/xen* (recursively) to the DomU

Here's the code I wrote to invoke hypercall:

#include <stdio.h>
#include <xenctrl.h>

int main(void){

        int xc_handle, rc;

        xc_handle = xc_interface_open();

        printf("\n Opened Interface: %d",xc_handle);

        rc = vb_notify(xc_handle);                       ---- Is a function implemented in libxc/ which has the hypercall invocation code

        printf("\n vb_notify returned: %d", rc);

        xc_interface_close(xc_handle);

        return rc;
}


When I try to compile the program which contains the hypercall I am getting error as:

#gcc -lxenctrl notify.c -o Notify
#gcc: error trying to exec 'cc1': execvp: No such file or directory

Same thing works fine from Dom0. Is my approach correct?


--
Srujan D. Kotikela
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