KVM VCPU创建过程

http://people.cs.nctu.edu.tw/~chenwj/slide/QEMU/KVM-allocate-vmcs.txt

http://people.cs.nctu.edu.tw/~chenwj/slide/QEMU/

  KVM_CREATE_VCPU --> kvm_vm_ioctl (kvm_main.c)

                           |
                           v

                      kvm_vm_ioctl_create_vcpu (kvm_main.c)

                           |
                           v

                      kvm_arch_vcpu_create (x86.c)            

                           |
                           v

                      kvm_x86_ops->vcpu_create (vmx_create_vcpu in vmx.c)

                           |
                           v

                      alloc_vmcs (vmx.c) ---> vmx_vcpu_setup (vmx.c)

                           |                        |
                           v                        v

                      alloc_vmcs_cpu (vmx.c)  vmcs_writel (vmx.c)