On Wed, Mar 12, 2025 at 01:51:08PM +0700, John Naylor wrote: > On Wed, Mar 12, 2025 at 12:46 AM Devulapalli, Raghuveer > <raghuveer.devulapa...@intel.com> wrote: > > > > I am happy to submit a patch with a C fallback version that leverages the > > specific algorithm/technique mentioned in the white paper to make it clear > > that Intel has contributed this specific technique to Postgres under > > Postgres license terms. That should hopefully address any lingering > > concerns anyone may have w.r.t using this technique for the benefit of > > Postgres. > > Thanks for offering, but I'm unclear if that's actually necessary. I'm > still confused as to what the status of the patents are. From your > last response: > > > Intel has contributed SSE4.2 CRC32C [1] and AVX-512 CRC32C [2] based on > > similar techniques to postgres. > > ...this is a restatement of facts we already know. I'm guessing the > intended takeaway is "since Intel submitted an implementation to us > based on paper A, then we are free to separately also use a technique > from paper B (which cites patents)". I'd be delighted to hear that, if > that's what you found from talking to a legal team, but it's not clear > to me.
Contributing code is copyright, which is unrelated to patents. I don't think the Postgres community even has a method of accepting patent usage grants. -- Bruce Momjian <br...@momjian.us> https://momjian.us EDB https://enterprisedb.com Do not let urgent matters crowd out time for investment in the future.
