ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,959, issued on March 18, was assigned to SiFive Inc. (Santa Clara, Calif.).
"Memory protection for gather-scatter operations" was invented by Andrew Waterman (Berkeley, Calif.) and Krste Asanovic (Oakland, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are disclosed for memory protection for memory protection for gather-scatter operations. For example, an integrated circuit may include a processor core; a memory protection circuit configured to check for memory protection violations with a protection granule; and an index range circuit configured to: memoize a maximum value and a minimum value of a tuple of indices stored...