On Tue, Mar 11, 2025 at 3:36 AM Devulapalli, Raghuveer <raghuveer.devulapa...@intel.com> wrote: > > Hi John, > > > On the other hand, looking at Linux kernel sources, it seems a patch using > > this > > technique was contributed by Intel over a decade ago: > > > > https://github.com/torvalds/linux/blob/master/arch/x86/crypto/crc32c-pcl-intel- > > asm_64.S > > > > So one more thing to ask our friends at Intel. > > Intel has contributed SSE4.2 CRC32C [1] and AVX-512 CRC32C [2] based on > similar techniques to postgres. > > [1] > https://www.postgresql.org/message-id/ph8pr11mb8286f844321ba1deec518348fb...@ph8pr11mb8286.namprd11.prod.outlook.com > [2] > https://www.postgresql.org/message-id/bl1pr11mb530401fa7e9b1ca432cf9dc3dc...@bl1pr11mb5304.namprd11.prod.outlook.com
No, these are not similar at all. I gave you the paper name and the patents cited therein here: https://www.postgresql.org/message-id/CANWCAZbkt89_fVAaCAGBMznwA_xh%3D2Ci5q4GZytZHKjZAEjCRQ%40mail.gmail.com -- John Naylor Amazon Web Services
