1487     int uffd_fd;  in ram_write_tracking_compatible()  local
1492     uffd_fd = uffd_create_fd(UFFD_FEATURE_PAGEFAULT_FLAG_WP, false);  in ram_write_tracking_compatible()
1493     if (uffd_fd < 0) {  in ram_write_tracking_compatible()
1507         if (uffd_register_memory(uffd_fd, block->host, block->max_length,  in ram_write_tracking_compatible()
1518     uffd_close_fd(uffd_fd);  in ram_write_tracking_compatible()
1622     int uffd_fd = (uintptr_t)opaque;  in uffd_protect_section()  local
1624     return uffd_change_protection(uffd_fd, rb->host + offset, size, true,  in uffd_protect_section()
1628 static int ram_block_uffd_protect(RAMBlock *rb, int uffd_fd)  in ram_block_uffd_protect()  argument
1643                                                     (void *)(uintptr_t)uffd_fd);  in ram_block_uffd_protect()
1645     return uffd_change_protection(uffd_fd, rb->host,  in ram_block_uffd_protect()
1656     int uffd_fd;  in ram_write_tracking_start()  local
1661     uffd_fd = uffd_create_fd(UFFD_FEATURE_PAGEFAULT_FLAG_WP, true);  in ram_write_tracking_start()
1662     if (uffd_fd < 0) {  in ram_write_tracking_start()
1663         return uffd_fd;  in ram_write_tracking_start()
1665     rs->uffdio_fd = uffd_fd;  in ram_write_tracking_start()
1684         if (ram_block_uffd_protect(block, uffd_fd)) {  in ram_write_tracking_start()
1707     uffd_close_fd(uffd_fd);  in ram_write_tracking_start()