On Thu, Mar 07, 2013 at 10:56:34PM -0500, lim4@xxxxxxxxxxxxxx wrote: > As we have known, in KVM full virtualization, guest VM is running in > non-root mode and KVM is running in root mode. While, in non-root > mode, guest kernel is running in Ring 0 and Apps are running in Ring > 3. However, what about the ring privilege for host linux? > > In my knowledge, host linux is not controlled by VMX instructions > and VMCS/VMCB. therefore, host linux should be running in root mode. > Before we install KVM, host linux just run in Ring 0 (at that time, > there is no root mode or non-root mode because VMX is not active). > Hence, after we install KVM module, host linux kernel should be > still in Ring 0 of root mode and Apps in host should run in Ring 3 > of root mode. Is KVM running in higher privileged mode like Ring -1 > of root mode or also running in Ring 0 of root mode? > KVM and the Linux kernel are running in Ring 0 in root mode. -- Gleb. -- 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
