kvm_xcrs         1128 include/uapi/linux/kvm.h #define KVM_GET_XCRS		  _IOR(KVMIO,  0xa6, struct kvm_xcrs)
kvm_xcrs         1129 include/uapi/linux/kvm.h #define KVM_SET_XCRS		  _IOW(KVMIO,  0xa7, struct kvm_xcrs)