On 15/12/2015 18:02, Hebbal Yacine wrote: > What I want to do is: when a controlled process is in user mode, i > change its cpl to 0, force it to execute a code that is injected in the > VM, set back its cpl to 3 and let it run like if nothing happened Could you inject an SMI and place your code in the guest firmware's SMM handler? What input is needed by this CPL=0 code? Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html