[seL4] How can I ensure the security of a system developed by Camkes?

Hi, I am using Camkes to develop VM virtualization, but I have a question that is how can I ensure isolation security between virtual machines? If a virus with a Trojan is installed on the VMM, will the virtual machines attack each other? and will the kernel be corrupted ? I didn't find some security instructions about the system developed by Camkes, or the implementation principle of Camkes, that is, how is resource mapping between seL4 and Camkes? Are there any related articles? Thanks, Comet959