[Xen-users] How does VNC in Xen worked?

[Lucky <ilucky163@xxxxxxx>]

Hi everyone,
I'm wondering the mechanism of VNC server in Xen. If anyone has some reference article please kindly indicate.

I'm wondering whether VNC in Xen need one to install VNC server in the guest domain. I'm still trying to connect to my guest domain (RHEL4) from a remote VNC client but had not succeed yet.

While doing this, I'm wondering how VNC service in Xen worked. Does it:
 1- Just running a vnc server in the guest domain and we could configure to access the guest domain through a network bridge in Xen. In this case, the VNC service indeed has nothing to do with Xen system, and it's only an application in guest domain which could get through Xen's supervisor to the network.

Or:

2- VNC server was a part built in IOEMU module of Xen, and directly grub the keyboard, mouse, and screen IO from the supervisor. In this case, the guest domain OS is not aware about whether the VNC service is running, and it just receives normal input/output IO from Xen system.

The above are two possible way that I could imaging, but if VNC is running by other miracle methods, please kindly explain or indicate references.

Many thanks.

Warm regards,
Lucky

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