Hi all, I still learning how KVM work. Right now I am playing with how the logical processor works in the non-root operation. From the Intel programming guide (chap 24 and 25), I know that its behaviours are controlled by VMCS through the VM-execution control fields. A VMM can use a different VMCS for each virtual machine that it supports. If I may ask, on KVM, how can I modify those VM-execution control fields? For example if I want to make the RDRAND instruction in guest VM cause a VM Exit by setting the “RDRAND exiting” VM-execution control. Can I modify this VM execution control fields at the high level (like perhaps through libvirt) or it should be at the OS level (maybe there is a KVM configuration file?) or I should create my own kernel module to alter those VM-execution control? and how? Thank you in advance for your kind attention. ~Ady
