Help about the console msg of rumpkernel

[Qixuan Wu]

Hi All,

I am a newer of rumpkernel. I followed the step of
https://github.com/rumpkernel/wiki/wiki/Tutorial%3A-Building-Rumprun-Unikernels
and do some test.

[qixuan.wqx@rsjd01553.et2sqa /home/qixuan.wqx/unikernel/rumprun/rumprun]
$cat test/helloer.c
#include <stdio.h>
#include <unistd.h>

int a()
{
        printf("much better!\n");
        return 0;
}

int main()
{
        printf("Hello, Rumprun ... I'm feeling tired\n");
        while(1){
                a();
        }
        return 0;
}

After running, it did not give the loop printf output:

[qixuan.wqx@rsjd01553.et2sqa
/home/qixuan.wqx/unikernel/rumprun/rumprun/test]
$rumprun kvm -D 1234 -p -i helloer-rumprun.bin

!!!
!!! NOTE: rumprun is experimental. syntax may change in the future
!!!

VNC server running on `127.0.0.1:5900'

Because not x11 or some graphic service in my test server. So is there
any way to see the output of the applicaton of kernel msg?

Thanks & Regards
Qixuan.