Re: [kvm-devel] Using VMChannel to communicate with the host.

[Dor L. <dor...@gm...>]

Cam Macdonell wrote:
>
> Dor Laor wrote:
> >>> You need to open the unix socket you passed to the vmchannel
> >>> parameter.
> >>> An easier alternative is to use -vmchannel di:2258,tcp://
> >>> 0:4444,server.
> >>> Before the guest loads you'll need to telnet the 4444 port and then
> >>> you should receive the
> >>> hello world output once the driver is up.
> >>> -Dor
> >> I tried having a program listening on the unix domain socket.
> >> Actually, the VM won't even start until a program connects to the
> >> socket.  I didn't get the message with my listening program, but I'll
> >> try the telnet method as I haven't programmed a socket in a while so
> >> I may have missed a step.
> >
> > Go for it, its 1 minute effort.
>
> Hi Dor,
>
> It didn't work.  I used the following option: -vmchannel
> di:2258,tcp:0:4444,server (the // confused kvm) and when the VM booted,
> I connected with "telnet localhost 4444" which allowed the boot to
> proceed.  But, I didn't get the hello host message when I loaded the
> hypercall module.  dmesg did show that the module loaded successfully.
> I'll dig around with it and see what else I can figure ou
>
I just tried it and it worked. I used fc7 2.6.21 kernel, 64 bits  for 
the guest.
Can you send the relevant dmesg?