tdh_mem_page_add
u64 tdh_mem_page_add(struct tdx_td *td, u64 gpa, struct page *page, struct page *source, u64 *ext_err1, u64 *ext_err2);
err = tdh_mem_page_add(&kvm_tdx->td, gpa, pfn_to_page(pfn),
EXPORT_SYMBOL_FOR_KVM(tdh_mem_page_add);