tdh_mr_extend
u64 tdh_mr_extend(struct tdx_td *td, u64 gpa, u64 *ext_err1, u64 *ext_err2);
err = tdh_mr_extend(&kvm_tdx->td, gpa + i, &entry, &level_state);
EXPORT_SYMBOL_FOR_KVM(tdh_mr_extend);