lowRISC (an open SoC effort for the RISC-V arch) has a form of tagged memory, that among other things can be used for capabilities. [0] http://www.lowrisc.org/

lowRISC (an open SoC effort for the RISC-V arch) has a form of tagged memory, that among other things can be used for capabilities. [0] http://www.lowrisc.org/docs/memo-2014-001-tagged-memory-and-minion-cores/ http://www.lowrisc.org/docs/memo-2014-001-tagged-memory-and-... [1] http://www.lowrisc.org/blog/2015/04/lowrisc-tagged-memory-preview-release/http://www.lowrisc.org/blog/2015/04/lowrisc-tagged-memory-preview-release/lowrisc http://www.lowrisc.org/blog/2015/04/lowrisc-tagged-memory-pr...