The idea in ECCs [1] is that you store some ancillary data that can be used to rectify a bounded amount of error introduced in the stored data. A straightforwar

The idea in ECCs [1] is that you store some ancillary data that can be used to rectify a bounded amount of error introduced in the stored data. A straightforward virtual memory system implementation would be to have this information stored alongisde page tables and the OS would go through the pages and update their ECCs periodically (probably at a limited rate so as not to cause load spikes). The devil in the details would be the bookkeeping about when a page contents has been written to and the ECC is invalid (soft page faults?). [1] https://en.wikipedia.org/wiki/Error_correction_code https://en.wikipedia.org/wiki/Error_correction_code